ROMANIAN ASTRONOMICAL JOURNAL
Vol. 20, Supplement, 2010
C O N T E N T S
Recent Insights into our Universe
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Foreword
(Vasile MIOC, Nedelia
Antonia POPESCU, Cristiana DUMITRACHE)
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5-6
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Session A: Solar Physics and Heliosphere
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7
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Valentina
BANCIU, Cristiana DUMITRACHE,
Analysis of the Active Region
11024
.
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9-14
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Daniela
Adriana LǍCǍTUŞ, Alin Răzvan PARASCHIV, Toma BǍDESCU, Maria Gabriela LUPU,
Sabina SIMON, Simona SANDU, Marilena MIERLA, Mircea Victor RUSU,
On Coronal Jets Observed by STEREO/SECCHI
Instruments
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15-21
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Cristiana
DUMITRACHE,
The 15 July 2007
Ulysses ICME Event and its Track Back to the Sun
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23-29
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Session B: Stellar Astrophysics
and Mutual Phenomena
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31
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Lubomir
ILIEV, Jiri KUBAT,
Spectral Behavior of the Stable
Shell Star HD 179343
.
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33-37
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Dumitru
PRICOPI, Marian Doru ŞURAN,
Modelling Pulsations of Solar-Like
Stars
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39-44
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Ovidiu TEŞILEANU,
Simulating Jets from Young Stellar
Objects
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45-49
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Session C: Galactic and Extragalactic
Astronomy, and Cosmology
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.
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51
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Nedelia Antonia POPESCU,
Drivers of Galaxy Evolution in Different
Environments
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53-60
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Ovidiu FURDUI,
BENDIS A Numerical Code for Simulating
Astrophysical Systems
.
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61-66
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Session D: Celestial Mechanics and Dynamical Astronomy
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67
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Vasile MIOC,
Ernesto PΙREZ-CHAVELA,
Phase-Space Structure in the Schwarzschild
de Sitter Problem with Negative Energy
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69-76
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George BOZIS,
Mira-Cristiana ANISIU,
Straight-Line Solutions in Two-Dimensional
Homogeneous Potentials
.
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77-86
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Cătălin
CUCU-DUMITRESCU, Dan ŞELARU, Florin ŞERBAN, Manuel BUICAN,
Segmentation and Classification for
Satellite Images Using PRDC Technique
.
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87-96
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Stelian
COJOCARU, Adrian DRǍGUŞAN, Sergiu LUPU,
On a Possible Geostationary and
GPS Constellation: A Dynamical Investigation
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97-106
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Rodica ROMAN,
Some Aspects of Solar Sail Dynamics
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107-111
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Iharka SZάCS-CSILLIK,
Lie-Integrator Overview
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113-116
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Session E: Astrometry
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117
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Mirel BIRLAN,
Ovidiu VǍDUVESCU, Dan Alin NEDELCU, the EURONEAR team,
High-Precision Astrometry of NEAs
via EURONEAR Observations
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119-124
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Marin PLOPEANU,
Octavian BǍDESCU,
Preliminary Stage Data Analysis in
the GPS Network
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125-130
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Marin PLOPEANU,
Octavian BǍDESCU,
Recently Developed and Implemented
Facilities for GPS Users
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131-134
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Mirel BIRLAN,
Accurate Position of Atmosphereless Solar-System
Bodies
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135-140
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Petre POPESCU,
Petre PARASCHIV, Alin NEDELCU, Octavian BǍDESCU,
An Overview of Astronomy in Antarctica and
Arctic Zones
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141-146
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Liviu ŞERBǍNESCU,
A Representation Method for Astronomical
Data Portability
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147-150
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Liviu ŞERBǍNESCU,
Petre POPESCU,
Software Technique for Some Pollution
Measurements Using Astronomical Spectrophotometric Image Processing
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151-156
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Session F: History of Astronomy and Astronomy Education
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157
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Magda STAVINSCHI,
Cătălin MOSOIA,
The International Year of Astronomy
2009 in Romania
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159-170
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<>Doina IONESCU,
Luigi Ferdinando Marsigli, Soldier and Scientist
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171-178
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Minodora Carmen LIPCANU,
The Study of Astronomical Refraction
in Time .
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179-183
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Octavian
BǍDESCU, Marin PLOPEANU,
Astronomy Education for Geodesy at
the Technical University of Civil Engineering in Bucharest
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185-188
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Doina IONESCU,
Hypatia of Alexandria
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189-196
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Iharka SZάCS-CSILLIK,
Alexandra COMŞA, Zoia MAXIM,
Archaeoastronomy in Romania .
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197-200
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Iharka SZάCS-CSILLIK, Istvan SZάCS, Liviu MIRCEA, Maria LUGOSI,
First
Steps in Astronomy .
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201-204
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SESSION A - SOLAR
PHYSICS AND HELIOSPHERE
ANALYSIS OF THE ACTIVE
REGION 11024
VALENTINA BANCIU,
Cristiana Dumitrache
Astronomical Institute
of the Romanian Academy
Str. Cuţitul de
Argint 5, 040557 Bucharest, Romania
E-mail: crisd@aira.astro.ro
Abstract. We analyze the evolution
of the active region 11024 between the 3 and 10 July 2009.
This is the only active region of July, nevertheless it produced the first
C-class flare of 2009.
We will focus our study on the flares that occurred on 4, 5 and 6 July
2009. We used ground-based
observations and data from space (SOHO, Hinode).
Key words:
Sun active regions flares.
ON
CORONAL JETS OBSERVED BY STEREO/SECCHI INSTRUMENTS
DANIELA ADRIANA LǍCǍTUŞ 1,
ALIN RǍZVAN PARASCHIV 1, TOMA BǍDESCU 1,
MARIA GABRIELA LUPU 1,
SABINA SIMON 1, SIMONA SANDU 1,
MARILENA MIERLA 2, MIRCEA VICTOR RUSU 1
1 University of Bucharest, Faculty
of Physics
Str. Atomiştilor
405, 077125 Bucharest-Măgurele, Romania
E-mail: lacatus.dana@gmail.com
2 Institute of Geodynamics of the Romanian Academy
Str. Jean-Louis
Calderon 19-21, 020032 Bucharest, Romania
E-mail: marilena@geodin.ro
Abstract. During the interval
20072008, we have observed more than 1700 white-light jets
in the images recorded by SECCHI-COR1 coronagraphs. More than 50% could
be identified
on the disk with bright points observed in ultraviolet images by EUVI.
From the complete
catalogue, we have selected 106 jets (observed in both STEREO-A and STEREO-B)
images
in order to derive their kinematics and 3D position. In this paper, we perform
a detailed study
of four events observed in both EUVI and COR1 images.
Key words:
solar physics coronal structures coronal holes jets solar wind.
THE
15 JULY 2007 ULYSSES ICME EVENT AND ITS TRACK BACK TO THE SUN
CRISTIANA DUMITRACHE
Astronomical Institute
of the Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mail: crisd@aira.astro.ro
Abstract. The year 2007 was a
poor period for spectacular interplanetary mass ejection events being
toward the solar minimum. The events occurred during this period are difficult
to be detected since their
do not obey all ICME criteria and the solar activity is low too. We describe
an ICME event registered
by Ulysses spacecraft on 15 July 2007, and a method to track it back to
the Sun. We display also the
solar source of the coronal ejection event that produced the ICME.
Key words:
Sun CME ICME.
SESSION B - STELLAR ASTROPHYSICS AND MUTUAL PHENOMENA
SPECTRAL
BEHAVIOR OF THE STABLE
SHELL STAR HD 179343
LUBOMIR ILIEV
Institute of Astronomy,
Bulgarian Academy of Sciences
72 Tsarigradsko Shosse Blvd., BG-1784 Sofia, Bulgaria
E-mail: liliev@libra.astro.bas.bg
JIRI KUBAT
Astronomical Institute,
Academy of Sciences of the Czech Republic
Fricova Str. 298,
CZ-25165 Ondrejov, Czech Republic
E-mail: kubat@sunstel.asu.cas.cz
Abstract. Be and shell stars are
fast rotating MS stars showing in general extreme diversity of variability
evidences with still unclear origin. Patterns of spectral variability manifested
by the star HD 179343 during
eight years of observations are discussed.
Key words:
variable stars Be/shell stars spectral observations.
MODELLING PULSATIONS OF
SOLAR-LIKE STARS
DUMITRU PRICOPI,
MARIAN DORU ŞURAN
Astronomical Institute
of the Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mails: dpricopi@aira.astro.ro,
suran@aira.astro.ro
Abstract. Many solar-like stars
were observed by the MOST, CoRoT and KEPLER space missions
and very accurate light curves was obtained. In order to extract the basic stellar parameters, we use the
asteroseismic inversion method where the observed oscillation frequencies
are used to estimate the stellar
parameters. The inversion is a process where the best estimated parameters
for a given star correspond
to the input parameters for the model that shows frequencies most similar
to the observed ones. We have
computed a wide grid of stellar models and their associated oscillation
frequencies and we have designed
a tool to evaluate the value of χ2 on that grid for different
possible sets of observational data. Stellar models
have been calculated with the CESAM stellar evolution code for values of
mass in the range 0.84.0 solar
masses, initial metallicity Z in the range 0.0060.04 and initial
helium abundance in the range 0.260.28, and
we considered different values or options for the input physics of the
models (microscopic diffusion, mixinglength
parameter of convection, overshooting). The oscillation frequencies have
been computed with the LNAWENR
nonadiabatic code for modes of degree l = 0, 1, 2, 3.
Key words:
astrophysics stellar pulsation.
SIMULATING JETS FROM YOUNG
STELLAR OBJECTS
OVIDIU TEŞILEANU
Research Centre
for Atomic Physics and Astrophysics, University of Bucharest
Str. Atomiştilor
405, 077125 Bucharest-Măgurele, Romania
E-mail: ovidiu.tesileanu@gmail.com
Abstract. With the recent improvements in available observational data, simulating
the radiative processes
in YSO jets will provide a valuable tool for model discrimination. We have
added a radiative cooling module
and time-dependent ionization state computation for 29 ion species to our
MHD code PLUTO. Also,
post-processing routines for a realistic computation of emission lines are
now available. From 2D simulations,
synthetic emission maps for line emissions can be directly computed, to
be compared with observations.
Key words:
protostars stellar jets YSO magnetohydrodynamics.
SESSION C - GALACTIC AND EXTRAGALACTIC ASTRONOMY,
AND COSMOLOGY
DRIVERS
OF GALAXY EVOLUTION
IN DIFFERENT ENVIRONMENTS
NEDELIA ANTONIA
POPESCU
Astronomical Institute
of the Romanian Academy
Str. Cuţitul de
Argint 5, 040557 Bucharest, Romania
E-mail: nedelia@aira.astro.ro
Abstract. Processes as ram pressure
stripping, high speed harassment, and close galaxy-galaxy interactions
are considered as outstanding drivers of galaxy evolution. We present the
importance of these processes in
settling the morphologies and stellar populations of galaxies, as well
as the relationship between color, morphology
and local environment density (core or outskirt of clusters, groups, or
field). We especially analyze the role of
galaxy-galaxy interactions in triggering star formation, and strong modification
of galaxy morphologies and colors
in the field of the radio galaxies 3C 34 (z = 0.689) and 3C 184 (z
= 0.996). Using combined optical-NIR photometric
data, HST/WFPC2 morphological data, and HST/WFPC2 archival images, a comprehensive
analysis of photometric
and morphological properties of galaxies in pairs and groups in these fields
is carried out.
Key words:
galaxy-galaxy interactions galaxy pairs galaxy groups and clusters.
BENDIS A NUMERICAL CODE
FOR SIMULATING ASTROPHYSICAL SYSTEMS
OVIDIU FURDUI
Astronomical Institute
of the Romanian Academy
Astronomical Observatory Cluj-Napoca
Str. Cireşilor 19, 400487 Cluj-Napoca, Romania
E-mail: ovidiu.furdui@gmail.ro
Abstract. We present a numerical code for simulating the evolution
of astrophysical systems. The code is written
in Fortran 90 and is designed to be versatile, flexible and extensible,
with modular options that can be selected
either at the time the code is compiled or at run time through a text input
file. We include a number of general
purpose modules that describe a variety of physical processes. In its simplest
form the code can evolve the
dynamical trajectories of a set of particles in two or three dimensions
using a module which implements the
Runge-Kutta-Fehlberg integrator, selected by the user at compile time.
All particles will interact gravitationally
as N-body particles, and all or any subset may also interact hydrodynamically,
using the SPH method. Such
particles may be used to model, for instance, stars in a planetary disk.
Free boundary conditions are implemented
by default. The code may be run without modification on single processors
or in parallel using MPI compiler
directives on large scale, shared memory parallel machines. We present
simulations of several test problems,
including a merger simulation of two elliptical galaxies with 5Χ105
particles.
Key words:
numerical methods N-body simulations planetary disks galaxies.
SESSION D - CELESTIAL MECHANICS AND DYNAMICAL ASTRONOMY
PHASE-SPACE
STRUCTURE
IN THE SCHWARZSCHILD DE SITTER PROBLEM
WITH NEGATIVE ENERGY
VASILE MIOC 1, ERNESTO PΙREZ-CHAVELA 2
1 Astronomical Institute of the
Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mail: vmioc@aira.astro.ro
2 Universidad Autσnoma Metropolitana Iztapalapa, Departamento
de Matιmaticas
Av. San Rafael Atlixco 186, Mιxico, D.F. 09340, Mιxico
E-mail: epc@xanum.uam.mx
Abstract. We fully determine the
phase-space structure for the Schwarzschild de Sitter problem in the
negative-energy case. We use McGehee-type transformations to bring the motion
equation in a simple and
handling form. We depict the global flow (including the collision and infinity
manifolds) and we emphasize
the role of the interplay of the angular momentum value with the parameters
of the field. We show the existence
of bifurcation values. This is only a brief survey of the basic ideas and
main results. The complete results, along
with their mathematical substantiations will be presented extensively elsewhere.
Key words:
celestial mechanics relativistic fields qualitative analysis.
STRAIGHT-LINE SOLUTIONS IN TWO-DIMENSIONAL
HOMOGENEOUS POTENTIALS
GEORGE BOZIS 1, MIRA-CRISTIANA ANISIU 2
1 Department of Physics, University
of Thessaloniki
54006 Thessaloniki,
Greece
E-mail: gbozis@auth.gr
2 T.
Popoviciu Institute of Numerical Analysis, Romanian Academy
P.O. Box 68, 400110 Cluj-Napoca,
Romania
E-mail: mira@math.ubbcluj.ro
Abstract. Within the framework
of the inverse problem of Dynamics, we consider the following question
with reference to the motion of one material point: Find the two-dimensional
homogeneous potentials (of
any degree m), which allow the particle to move, under suitable
initial conditions, on single straight lines
given in advance. We offer examples which cover all the cases which arise
during the study.
Key words:
inverse problem straight-line solutions (SLSs).
SEGMENTATION AND CLASSIFICATION
FOR SATELLITE IMAGES
USING PRDC TECHNIQUE
CǍTǍLIN CUCU-DUMITRESCU 1, 3, DAN ŞELARU 2,
FLORIN ŞERBAN 3,
MANUEL BUICAN
3
1 Astronomical
Institute of the Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mail: cucudumitrescu@yahoo.com
2 Institute for Space Sciences
Str. Atomiştilor
406, 077125 Bucharest-Măgurele, Romania
E-mail: danselaru@yahoo.com
3 Advanced Studies and Research
Center
Str. Jules Michelet 1, 010461 Bucharest, Romania
E-mail: florin.serban@asrc.ro, mbuican@yahoo.com
Abstract. We combined some of
the ideas from the well known PRDC technique (Pattern Representation
Scheme using Data Compression) and MST crossing (Minimum Spanning
Tree) with new ideas, some
of them original, like topological absorption, multilevel and conditional
segmentation, zonal classification,
intrinsic segmentation and segmentation with a target. The result is a
platform for semi-automatic segmentation
in satellite imagery. In this article, besides the presentation of some
of the technical aspects of our methods, we
insist on explaining that the main goal for a segmentation application/platform/service
is the customizability.
Key words:
remote sensing data mining satellite image segmentation PRDC technique
PCA technique automatic recognition and classification.
ON A POSSIBLE GEOSTATIONARY
AND GPS CONSTELLATION: A DYNAMICAL INVESTIGATION
STELIAN COJOCARU
1, ADRIAN DRǍGUŞAN 2, SERGIU LUPU 2
1 Ministry of Transports and Infrastructure,
Bucharest, Romania
E-mail: cojocarus@yahoo.com
2 Naval Academy Mircea cel Bătrβn, Constanţa, Romania
Abstract. The paper constitutes
an attempt to comparatively analyze the characteristic perturbations of both
geostationary and GPS classes of artificial satellites and to draw some
significant conclusions on their dynamical
behaviour.
Key words:
GPS geostationary orbital perturbations.
SOME ASPECTS OF A SOLAR SAIL DYNAMICS
RODICA ROMAN
Astronomical Institute
of the Romanian Academy
Astronomical Observatory Cluj-Napoca
Str. Cireşilor 19, 400487 Cluj-Napoca, Romania
E-mail: rdcroman@yahoo.com
Abstract. We consider the motion
of a solar sail within the framework of the photogravitational planar circular
restricted three-body problem. In such a case we prove that the Jacobian
integral does not exist. Some features
of the solar sail planar motion are discussed. The existence of equilibrium
points is analyzed, and a theorem
concerning the triangular points is stated.
Key words:
celestial mechanics restricted three-body problem photogravitational
effect.
LIE-INTEGRATOR OVERVIEW
IHARKA SZάCS-CSILLIK
Astronomical Institute
of the Romanian Academy
Astronomical Observatory Cluj-Napoca
Str. Cireşilor 19, Cluj-Napoca, Romania
E-mail: iharka@gmail.com
Abstract. The Lie-integration method is a fast integration method for
differential equations, especially for the
equations of the motion of celestial bodies. This work presents some recurrence
formulae, which greatly simplifies
the linearized equations of motion. The Lie-integrator method is very well
suited for a long time integration of orbits
in celestial mechanics.
Key words:
celestial mechanics numerical methods Lie-integrator.
SESSION E - ASTROMETRY
HIGH-PRECISION
ASTROMETRY OF NEAs
VIA EURONEAR OBSERVATIONS
MIREL BIRLAN 1, 3,
OVIDIU VADUVESCU 2, 3, DAN ALIN NEDELCU 1, 3,
THE EURONEAR TEAM
1 Institut de Mιcanique Cιleste
et de Calcul des Ephιmιrides,
CNRS UMR8028, Observatoire de Paris
77, av. Denfert Rochereau, 75014 Paris Cedex, France
E-mail: mirel.birlan@imcce.fr
2 Isaac Newton Group of Telescopes
Santa Cruz de la Palma, Canary Islands, Spain
E-mail: ovidiu.vaduvescu@gmail.com
3 Astronomical Institute
of the Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mail: nedelcu@aira.astro.ro
Abstract. One of the major objectives
of EURONEAR is the high-precision astrometry of Near-Earth Asteroids
in a coordinated network. EURONEAR will create synergies between planetologists
for follow-up, precovery, and
recovery of Near-Earth Asteroids. Results of observational campaigns along
with current activities and future plans
will be presented.
Key words:
Near-Earth Asteroids astrometry network activity.
PRELIMINARY
STAGE DATA ANALYSIS
IN THE GPS NETWORK
marin Plopeanu
1, Octavian bǍdescu 2
1 Technical University of Civil
Engineering, Faculty of Geodesy
Bd. Lacul Tei 124,
020396 Bucharest, Romania
E-mail: mplopeanu@geodezie.utcb.ro
2 Astronomical Institute of the
Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mail: octavian@aira.astro.ro
Abstract. Before a rigorous least-squares
adjustment, measurements are investigated for possible errors avoiding
in the final adjustment algorithm. In this paper we present a few analysis
tools which can be used in the preliminary
stage of the GPS network adjustment: network integration of old/fiducially
points, repeated measurements in the GPS
network, closure loops generated by the geometrical network shape, and
finally a free adjustment of the network,
unconstrained at all or constrained only on a single point.
Key words:
GPS data, network adjustment.
RECENTLY DEVELOPED AND IMPLEMENTED
FACILITIES FOR GPS USERS
marin Plopeanu
1, Octavian bǍdescu 2
1 Technical University of Civil
Engineering, Faculty of Geodesy
Bd. Lacul Tei 124,
020396 Bucharest, Romania
E-mail: mplopeanu@geodezie.utcb.ro
2 Astronomical Institute of the
Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mail: octavian@aira.astro.ro
Abstract. In this paper we investigate
two new facilities (at user level) in the GPS technology: RTK measurements
with the base initialized on a point with navigational coordinates and the
integration of the eccentric GPS measurements
in the normal flood of GPS data.
Key words:
GPS data network adjustment.
ACCURATE POSITION
OF ATMOSPHERELESS SOLAR-SYSTEM
BODIES
MIREL BIRLAN 1, 2
1 Institut de Mιcanique Cιleste et de Calcul des Ephιmιrides
CNRS UMR8028, Observatoire de Paris
77, av. Denfert Rochereau, 75014 Paris Cedex, France
E-mail: Mirel.Birlan@imcce.fr
2 Astronomical Institute
of the Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
Abstract. A method for determination
of preliminary elements of the light-time orbit in the case of astrometry
of
solar system bodies is an actual topic. The two main reasons in pursuing
this activity are intimately linked to (i) the
new ground-based and extra-atmospheric observational techniques, and (ii)
the access to fainter solar system objects
via small-sized telescopes. The new astrometry is critical in the case of
new discoveries (to improve and secure the
orbit of a new object) and in the case of objects with large uncertainties
in their orbits (usually these objects were not
observed since long date or they undergo large perturbations). The new astrometry
is also necessary for old observations,
while the accuracy of new reference star catalogues increases.
Key words:
minor planets astrometry accuracy.
AN OVERVIEW
OF ASTRONOMY
IN ANTARCTICA AND ARCTIC
ZONES
PETRE POPESCU 1, PETRE PARASCHIV 1,
ALIN NEDELCU 1, Octavian bădescu 1,2
1 Astronomical Institute of the
Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mails: [petre,
paras, nedelcu, octavian]@aira.astro.ro
2 Technical University of Civil
Engineering, Faculty of Geodesy
Bd. Lacul Tei
124, 020396 Bucharest, Romania
Abstract. Some aspects of Astronomy
in the Antarctic and Arctic regions are presented, highlighting the unique
environment of the Antarctic plateau. These areas provide very good conditions
for a wide range of astronomical
observations: the lowest levels of seeing in the visible of any location
on our planet, the lowest sky backgrounds in
the infrared, and the best atmospheric transmission across windows in the
infrared and sub-millimeter. Particular
attention is paid to the Romanian Robotic Telescope Project for Antarctica
PROTEL.
Key words: astronomy polar researches astroclimate.
A REPRESENTATION
METHOD
FOR ASTRONOMICAL DATA PORTABILITY
LIVIU ŞERBǍNESCU
Astronomical Institute
of the Romanian Academy
Str. CuţItul de Argint 5, 040557 Bucharest, Romania
E-mail: liviu_969@yahoo.com
Abstract. This paper proposes a formal definition
of the extension of Conceptual Reference Model, intended to
facilitate the integration, mediation and interchange of heterogeneous
astrometrical data information. It aims
at
providing the semantic definitions and clarifications needed to transform
disparate, localized information sources
into a coherent global resource, be it within a larger institution, in
intranets or on the Internet.
Key words:
astrometric data Conceptual Reference Model data analysis.
SOFTWARE TECHNIQUE FOR SOME
POLLUTION MEASUREMENTS
USING ASTRONOMICAL SPECTROPHOTOMETRIC IMAGE PROCESSING
Liviu Şerbănescu,
PETRE POPESCU
Astronomical Institute
of the Romanian Academy
Str. Cuţitul de
Argint 5, 040557 Bucharest, Romania
E-mail: liviu_969@yahoo.com,
petre@aira.astro.ro
Abstract. The proposed software
technique can be used for monitoring of the atmospheric pollution. The software
system is composed by: image-acquiring software; software for management
of the spectral data (celestial body
spectra + polluting elements spectra + acquired data + calibration models);
software for mathematical modeling
using fuzzy techniques in order to calculate spectral intensity corresponding
to pollution elements, and software for
building the pollution map based on the spectral analysis of images and
the set-up of the residuals.
Key words:
astronomical spectrophotometry software processing data analysis.
SESSION F - HISTORY OF ASTRONOMY AND ASTRONOMY EDUCATION
THE
INTERNATIONAL YEAR OF ASTRONOMY 2009
IN ROMANIA
MAGDA STAVINSCHI
1, CǍTǍLIN MOSOIA 2
1 Astronomical Institute of the
Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mail: magda_stavinschi@yahoo.fr
2 The Science Newspaper, Bucharest,
Romania
E-mail: catalin.mosoia@sciencenewspaper.eu
Abstract. 2009 has been an entirely exceptional year for the
astronomical community as well as for the
general public. 400 years ago Galileo Galilei looked at the sky through
a telescope and discovered a different
Universe than that of before him. The simplest telescope that we can imagine
today proved that the Sun is
not immaculate and has numerous spots, Venus has phases like the Moon, and
Jupiter has a mini-system of
satellites; these are just a few discoveries of the scientist who becomes
later the father of the modern astronomy.
All these determined the International Astronomical Union in its 2003 General
Assembly, which took place in
Sydney, to propose to the UNESCO and the United Nations that 2009 have to
become the International Year
of Astronomy. Its mission was clear: the International Year of Astronomy,
IYA2009, is a global effort initiated by
the International Astronomical Union (IAU) and UNESCO to help the citizens
of the world rediscover their place
in the Universe through the daytime and nighttime sky, and thereby engage
a personal sense of wonder and discovery.
This initiative has a huge and unbelievable echo all over the world: 148
national nodes, 40 Organisational Nodes,
110 national websites, 12 Cornerstone Projects, 11 Special Task groups.
Key words:
International Year of Astronomy Romanian astronomical triennium communication
outreach.
LUIGI
FERDINANDO MARSIGLI,
SOLDIER AND SCIENTIST
dOINA IONESCU
Astronomical Institute
of the Romanian Academy
Str. Cuţitul de Argint 5, 040557 Bucharest, Romania
E-mail: doinaionescu36@clicknet.ro
Abstract. This paper attempts
to outline Count Luigi Ferdinando Marsiglis personality as a diplomate and
soldier in the service of the Habsburg empire army in the last part of the
17th century and the first part of the
18th century, as well as a scholar by vocation and training. We present
some of Marsiglis knowledge of science
in general and of astronomy in particular, the way in which he applied this
knowledge to his cartographic work,
his relations with some renowned astronomers of the time, as well as the
heritage he left to the academic scientific
world. Last but not least we point out his cartographic and archaeological
achievements in the Romanian provinces
of Transylvania and Wallachia made during the military campaigns that brought
him there.
Key words:
history of astronomy.
THE
STUDY OF ASTRONOMICAL REFRACTION
IN TIME
MINODORA CARMEN LIPCANU
Palatul Naţional al Copiilor
Bd. Tineretului
810, 040342 Bucharest, Romania
E-mail: mlipcanu@gmail.com
Abstract. From antiquity till
now astronomers have been concerned with the modification of the direction
from
which the celestial bodies are observed as against their geometric direction.
Since then, tables, principles, theorems,
calculation methods, atmospheric models have been issued, which have been
perfected in time. This paper presents
this evolution briefly.
Key words:
history of astronomy astronomical refraction.
Astronomy education for geodesy
AT THE Technical University
of
Civil Engineering IN BUCHAREST
Octavian bǍdescu
1,2, marin Plopeanu 2
1 Astronomical Institute of the
Romanian Academy
Str. Cuțitul de Argint 5, 040557 Bucharest, Romania
E-mail: octavian@aira.astro.ro
2 Technical University of Civil
Engineering, Faculty of Geodesy
Bd. Lacul Tei
124, 020396 Bucharest, Romania
E-mail: mplopeanu@geodezie.utcb.ro
Abstract. This paper contains
some considerations about the consistency of astronomy and astrometry knowledge
in academic geodetic education. In the context of the development of space
and satellite geodesy it is necessary to
re-evaluate the ratio between astronomy and geodesy. The new analytical
programs and lectures structure at Faculty
of Geodesy of the Technical University of Civil Engineering are discussed,
too.
Key words:
astronomy geodesy education.
HYPATIA OF ALEXANDRIA
dOINA IONESCU
Astronomical Institute
of the Romanian Academy
Str. Cuţitul de
Argint 5, 040557 Bucharest, Romania
E-mail: doinaionescu36@clicknet.ro
Abstract. This paper is a presentation
of Hypatia of Alexandria as an eminent female professor of philosophy,
mathematics and astronomy of antiquity, trained at the school of Alexandria
by her father, Theon, the last scholar
and director of the Museum of Alexandria, himself a professor of mathematics,
astronomy and philosophy. Theon
and Hypatia revised together some of the works of great Hellenistic scientists,
such as Ptolemy, purely for didactic
purposes. According to several historical sources the works they revised
became later influential mathematics and
astronomy textbooks, highly appreciated by scientists such as Copernicus,
Kepler, Galileo, Descartes, Newton,
Pierre de Fermat. Hypatia taught and also wrote solely out of vocation
for elite students. Through her life principles
and educational activity she has remained unsurpassed in the gallery of
ancient science scholars.
Key words:
history of astronomy Hypatia of Alexandria.
ARCHAEOASTRONOMY IN ROMANIA
(In memoriam
Dr. Gheorghe-Dorin Chiş)
IHARKA SZάCS-CSILLIK
1, ALEXANDRA COMŞA 2, ZOIA MAXIM 3
1 Astronomical Institute of the
Romanian Academy
Astronomical Observatory Cluj-Napoca
Str. Cireşilor 19, Cluj-Napoca, Romania
E-mail: iharka@gmail.com
2 Institute of Archaeology Vasile
Pβrvan
Str. Henri Coandă
11, Bucharest, Romania
3 National Museum of Transylvanian
History
Str. Daicoviciu 2, Cluj-Napoca, Romania
Abstract. From antiquity till
now the astronomers have been concerned with the modification of the direction
from
which the celestial bodies are observed as against their geometric direction.
Thus, tables, principles, theorems, calculation
methods, atmospheric models, etc. have been issued, which have been improved
along the time. This paper is a brief
survey of this evolution.
Key words:
astronomy history archaeoastronomy.
FIRST STEPS
IN ASTRONOMY
(WHICH CANNOT START TOO EARLY)
IHARKA SZάCS-CSILLIK
1, ISTVAN SZάCS 2, LIVIU MIRCEA 1, MARIA
LUGOSI 3
1 Astronomical Institute of the
Romanian Academy
Astronomical Observatory
Cluj-Napoca
Str. Cireşilor 19, Cluj-Napoca, Romania
E-mail: iharka@gmail.com
2 Ificomp
Str. Adria 6, Kaposvar, Hungary
3 Ificomp
Str. Istvan 29a,
Debrecen, Hungary
Abstract. The introduction to astronomy at the kindergarten age is still
on a very elementary level. There are no adequate
curriculum, system and syllabus, which could be accessible to kindergarten
teachers or parents. As far as our knowledge
goes, such a publication did not appear in Europe yet. On the occasion of
the International Year of Astronomy 2009, we
want to compensate this gap with our book (which will be soon come out)
Childrens Eyes on the Sky (Kindergarten
Astronomy). This playfully documentary took place in a kindergarten
with a great success in children places. In this paper
we present our basic ideas regarding this subject.
Key words:
astronomy education kindergarten.