Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Borkova, T. V."'
Publikováno v:
Astron. Lett., 38, 506 (2012)
Based on published data, we have compiled a catalogue of fundamental astrophysical parameters for 593 open clusters of the Galaxy. In particular, the catalogue provides the Galactic orbital elements for 500 clusters, the masses, central concentration
Externí odkaz:
http://arxiv.org/abs/1212.1555
HST trigonometric distances, photometric metallicities, isochronic ages from the second revised version of the Geneva--Copenhagen survey, and uniform spectroscopic Fe and Mg abundances from our master catalog are used to construct and analyze the age
Externí odkaz:
http://arxiv.org/abs/1107.1725
Data from the revised Geneva--Copenhagen catalog are used to study the influence of radial migration of stars on the age dependences of parameters of the velocity ellipsoids for nearby stars in the thin disk of the Galaxy, assuming that the mean radi
Externí odkaz:
http://arxiv.org/abs/1104.1562
Relationship between the Velocity Ellipsoids of Galactic-Disk Stars and their Ages and Metallicities
The dependences of the velocity ellipsoids of F-G stars of the thin disk of the Galaxy on their ages and metallicities are analyzed based on the new version of the Geneva-Copenhagen Catalog. The age dependences of the major, middle, and minor axes of
Externí odkaz:
http://arxiv.org/abs/0908.1347
Publikováno v:
Odessa Astronomical Publications, vol. 20 (2007)
The behavior of the relative magnesium abundances in the thin-disk stars versus their orbital radii suggests that the star formation rate in the thin disk decreases with increasing Galactocentric distance, and there was no star formation for some tim
Externí odkaz:
http://arxiv.org/abs/0710.5022
Publikováno v:
Odessa Astronomical Publications, vol. 20 (2007)
We present a new version of the compiled catalogue of nearby stars for which was published the spectoscopically determined effective temperatures, surface gravities, and abundances of iron, magnesium, calcium, silicon, and titanium. Distances, veloci
Externí odkaz:
http://arxiv.org/abs/0710.4531
Autor:
Marsakov, V. A., Borkova, T. V.
Publikováno v:
Odessa Astron.Pub.20:134,2007
We identified globular clusters and field stars of extragalactic origin and investigated their chemical, physical, and kinematical properties. This objects as supposed was captured by the Galaxy at different times from debris of the dwarf satellite g
Externí odkaz:
http://arxiv.org/abs/0710.4364
Autor:
Marsakov, V. A., Borkova, T. V.
Publikováno v:
Astron.Lett.32:545-556,2006
We analyze the relations between the relative magnesium abundances, metallicities, and Galactic orbital elements for halo stars. We show that the relative magnesium abundances in protodisk halo stars are virtually independent of metallicity and lie w
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606586
Autor:
Marsakov, V. A, Borkova, T. V.
Publikováno v:
Astron.Lett. 32 (2006) 376-392
We analyze the relations between the relative magnesium abundances in stars and their metallicities, Galactic orbital elements, and ages. The relative magnesium abundances in metal-poor ([Fe/H] < -0.4) thin-disk stars have been found to systematicall
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604555
Autor:
Marsakov, V. A., Borkova, T. V.
Publikováno v:
Astron.Lett. 31 (2005) 515-527
The space velocities and Galactic orbital elements of stars calculated from the currently available high-accuracy observations in our summary catalog of spectroscopic magnesium abundances in dwarfs and subgiants in the solar neighborhood are used to
Externí odkaz:
http://arxiv.org/abs/astro-ph/0507134