搜索结果: 121-132 共查到“知识库 恒星天文学”相关记录132条 . 查询时间(3.299 秒)
SOME FRESH INDICATIONS OF THE SOLAR ORIGIN OF 4-6-YEAR OSCILLATION OF THE EARTH'S ROTATION PARAMETERS
SOLAR ORIGIN EARTH'S ROTATION PARAMETERS 4-6-YEAR OSCILLATION
<
2009/3/19
The variations of universal times difference UT1-TAI and Earth’s
rotation instantaneous pˆole coordinates (X,Y) are studied in the frequency range
of 3 - 8 yr−1 as a function of the solar...
V.Protich-Benishek and Vl.Benishek:CCD ASTROMETRIC OBSERVATIONS OF COMETS AT THE BELGRADE OBSERVATORY DURING 1998-2000 (I)
V.Protich-Benishek CCD ASTROMETRIC Vl.Benishek COMETS
<
2009/3/18
143 precise astrometric positions of seven comets were obtained
with the CCD equipped Askania astrograph (13.5/160) of Belgrade Astronomical
Observatory. The SBIG ST-8(1530 × 1020 pixel array) camer...
DIFFERENTIAL PHOTOMETRY OF EK Dra AND 29 Dra
Stars individual EK Dra, 29 Dra-Stars late-type-starspots
<
2009/3/3
We report on BVR precise photometry of active late-type stars EK
Dra and 29 Dra in the spring of 2004. The analysis suggests a reasonable t with
single spot model for both cases in the season as fa...
A SEARCH FOR CANDIDATE RADIO SUPERNOVA REMNANTS IN THE NEARBY IRREGULAR STARBURST
galaxies individual (NGC 4214, NGC 4395)-galaxies ISM-galaxies spiral-galaxies starburst-radio continuum galaxies-ISM supernova remnants
<
2009/3/3
We present the results of a search for new candidate radio su-
pernova remnants (SNRs) in the nearby starburst irregular galaxies NGC 4214
and NGC 4395 using archived radio observations made with th...
GRADIENT OF MEAN MASS OF A STAR IN THE FIELD OF GLOBULAR CLUSTERS
globular clusters general-Stars fundamental parameters (masses)
<
2009/2/16
Based on the relevant available data, the distributions of masses
and apparent magnitudes of stars belonging to globular star clusters are simulated.
The simulations are aimed at examining the in°ue...
R3 FLUIDS
Galaxies clusters general-Galaxies haloes
<
2009/2/13
The current paper is aimed at getting more insight on three main
points concerning large-scale astrophysical systems, namely: (i) formulation of ten-
sor virial equations from the standpoint of anal...
ON THE DENSITY WITHIN THE DARK-MATTER CORE IN OUR GALAXY
solar neighbourhood-dark matter
<
2009/2/10
Assuming that the disc of our Galaxy, the Milky Way, obeys the
classical exponential law, that it is maximal and the Sun is rather far from the
maximum of its circular velocity, one ¯nds that, ...
MINIHALO MODEL FOR THE LOW-REDSHIFT Lyα ABSORBERS REVISITED
quasars absorption lines-Galaxies halos-dark matter
<
2009/2/9
We reconsider the basic properties of the classical minihalo model
of Rees and Milgrom in light of the new work, both observational (on "dark galax-
ies" and masses of baryonic haloes) and theoretic...
RADIO CONTINUUM STUDY OF THE LARGE MAGELLANIC CLOUD - SNR J0519-6926
ISM supernova remnants-Magellanic Clouds-ISM individual ob-jects SNR J0519-6926
<
2009/2/9
We present the results of new high resolution ATCA observations
of SNR J0519{6926. We found that this SNR exhibits a typical "horseshoe" ap-
pearance with ®={0.55§0.08 and D=28§1 pc. No polariza...
A particular case of steady state and spherical symmetry - the so-
called logarithmic potential introduced as the ¯rst approximation for dark coronae
of galaxies - is studied. Both time and ang...
RECOGNIZING MEANDERS TO RECONSTRUCT RIVER DYNAMICS OF THE GANGES
river metrics Landsat Ganges delta Bangladesh
<
2015/11/16
The long-term discharge evolution of branches of rivers can potentially be derived from inactive and fossil river meanders using
relations between discharge and channel width and meander dimensions....