Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Margarita Sharina"'
Autor:
Margarita Sharina, M. I. Maricheva
Publikováno v:
Astronomy Reports. 65:455-476
This paper presents the results of the analysis of the integrated-light spectra of eight Galactic globular clusters with a relatively low luminosity and stellar density: Palomar 1, Palomar 2, Palomar 10, Palomar 13, Palomar 14, NGC 6426, NGC 6535, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92d8485b3b6248a1c4603dd714b8ec70
https://doi.org/10.1134/s1063772921060068
https://doi.org/10.1134/s1063772921060068
Publikováno v:
Astrophysical Bulletin. 75:394-406
In this work a search was carried out for globular clusters belonging to the Sagittarius (Sgr) tidal stream using the analysis of spatial positions, radial velocities relative to the Galactic Standard of Rest (V_{GSR}),proper motions and ratio of "ag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5ebf5bff0ac10e86d8cfa4c9e18ea3f
https://doi.org/10.1134/s1990341320040021
https://doi.org/10.1134/s1990341320040021
Autor:
Margarita Sharina, V. V. Shimansky
Publikováno v:
Astronomy Reports. 63:687-698
Moderate resolution spectra of four globular clusters in the dwarf spheroidal galaxy IKN obtained with the 6-m telescope of the Special Astrophysical Observatory have been used to determine the radial velocities, ages, and metallicities of the cluste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aef5dce9a000027d7a506352517da6c6
https://doi.org/10.1134/s1063772919070084
https://doi.org/10.1134/s1063772919070084
Autor:
Margarita Sharina
Publikováno v:
Astrophysics. 62:9-17
Surface photometry data on 90 dwarf irregular galaxies (dIrrs) in a wide vicinity of the Virgo cluster and 30 isolated dIrrs are presented. Images from the Sloan Digital Sky Survey (SDSS) are used. The following mean photometric characteristics (colo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0671f5ba6addffc694b9ccf2b69e070
https://doi.org/10.1007/s10511-019-09559-6
https://doi.org/10.1007/s10511-019-09559-6
We present the results of determination of the age, helium mass fraction (Y) in terms of the used stellar evolutionary models, metallicity ([Fe/H]), and abundances of the elements C, O, Na, Mg, Ca, Ti, Cr and Mn for 26 globular clusters of the Galaxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e469af9d433861e8d84692823e5d733
http://arxiv.org/abs/2009.02104
http://arxiv.org/abs/2009.02104
Deep stellar photometry of one of the most distant Galactic globular clusters, Palomar 3, based on frames taken with the VLT in Johnson-Cousins broadband V and Ifilters is presented, together with medium-resolution stellar spectroscopy in the central
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53205d91f0ac25a340e16425c764be86
Publikováno v:
Astrophysics. 61:435-443
We compare the properties of the stellar populations of the globular clusters and field stars in two dwarf spheroidal galaxies (dSphs): ESO 269-66, a near neighbor of the giant S0 galaxy NGC 5128, and KKs 3, one of the few extremely isolated dSphs wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::485e372e37262172a390fdf3313f0550
https://doi.org/10.1007/s10511-018-9548-3
https://doi.org/10.1007/s10511-018-9548-3
On the relationship between metallicity distributions of globular clusters and of circumgalactic gas
Autor:
Margarita Sharina, I. A. Acharova
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 481:2074-2082
The abundance of alpha elements and iron in stars of globular clusters shows the composition of the gaseous medium, in which they have been formed. In the present paper, we discuss a possibility to consider dense clouds of circumgalactic gas (partial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff7e70ff07067dd33118e6ddd74dc0cc
https://doi.org/10.1093/mnras/sty2419
https://doi.org/10.1093/mnras/sty2419
Publikováno v:
Astrophysical Bulletin. 73:318-334
We present the results of determinations of age, helium abundance (Y), metallicity ([Fe/H]), and estimations of abundances of the elements: C, N, O, Mg, Ca, Ti, Cr, Ni, Sr, and Ba of four globular clusters in the neighborhood of the Andromeda galaxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::158f1112c9d96efbbe34613a3af17020
https://doi.org/10.1134/s1990341318030069
https://doi.org/10.1134/s1990341318030069
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 471:1955-1975
We present the analysis of medium-resolution spectra obtained at the Southern African Large Telescope (SALT) for nuclear globular clusters (GCs) in two dwarf spheroidal galaxies (dSphs). The galaxies have similar star formation histories, but they ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d4def36f9a794cb6a10984408da7062
https://doi.org/10.1093/mnras/stx1605
https://doi.org/10.1093/mnras/stx1605