Zobrazeno 1 - 10
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pro vyhledávání: '"Tadross, A. L."'
Autor:
Tadross, A. L.
We present the results of a comprehensive astrophysical study of a newly discovered open cluster, dubbed Ash-1. Using the third data release of the Gaia space mission, Gaia DR3, Ash-1 was accidentally discovered within the constellation Sagittarius i
Externí odkaz:
http://arxiv.org/abs/2408.11383
The study of open star clusters makes us understand a lot about the composition and construction of the Milky Way Galaxy. Thanks to the Gaia DR2 database that helps us to get the genetic members of star clusters using their proper motions and paralla
Externí odkaz:
http://arxiv.org/abs/2107.13350
Autor:
Tadross, A. L., Hendy, Y. M.
Here, we conducted a photometric and astrometric study of two open stellar clusters Dolidze-18 and Ruprecht-70, which have not been photometrically studied before. The most important thing for using Gaia (DR2) database lies in the positions, parallax
Externí odkaz:
http://arxiv.org/abs/2104.11778
Autor:
Tadross, A. L., Hendy, Y. M.
The estimation of the main parameters of star clusters is a very important target in astrophysical studies. Many of the open clusters listed in known catalogs have insuffcient astrometric parameters. Improving the observations and analysis methods pr
Externí odkaz:
http://arxiv.org/abs/2009.00263
Akademický článek
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Akademický článek
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The astrophysical parameters of the open star cluster Mayer 3 have been estimated using the Newtonian focus (f/4.84) of the 1.88 m Telescope of Kottamia Observatory in Egypt. The VRI observations have been carried out down to a limiting magnitude of
Externí odkaz:
http://arxiv.org/abs/1711.04284
Autor:
Tadross, A. L., Hendy, Y. H. M.
The optical UBVRI photometric analysis has been established using SLOAN DIGITAL SKY SURVEY (SDSS database) in order to estimate the astrophysical parameters of poorly studied open star cluster IC 2156. The results of the present study are compared wi
Externí odkaz:
http://arxiv.org/abs/1511.03294
The axis of zodiacal lights have been obtained in blue and yellow colors using photoelectric observations of zodiacal light. These observations have been carried out at Abu Simbel Site in Egypt, in October 1975. This site lies too near to the tropic
Externí odkaz:
http://arxiv.org/abs/1403.5126
PPMXL photometric study of four open cluster candidates (Ivanov 2, Ivanov 7, Ivanov 9 and Harvard 9)
Autor:
Tadross, A. L., Bendary, R.
The astrophysical parameters of four unstudied open star cluster candidates - Harvard 9, Ivanov 2, Ivanov 7, and Ivanov 9 - have been estimated for the first time using the PPMXL database. The stellar density distributions and color-magnitude diagram
Externí odkaz:
http://arxiv.org/abs/1403.3014