22 research outputs found
Age and metallicity of the bulges in lenticular galaxies
Panoramic spectroscopic data of the sample of 80 nearby lenticular galaxies
obtained with the Multi-Pupil Fiber Spectrograph of the 6-m telescope are
presented. The SSP-equivalent ages, [Z/H], and [Mg/Fe] are determined through
the Lick indices H-beta, Mgb, and separately for the nuclei and for the
bulges. About a half of the sample contain chemically distinct nuclei, more
metal-rich and younger than the bulges. The correlations of the stellar
population properties for the nearby S0s are discussed.Comment: 5 pages, 2 figures. To appear in the Proceedings of the IAU Symposium
245, "Formation and Evolution of Galaxy Bulges", held at Oxford, U.K., July
2007, Eds. M. Bureau, E. Athanassoula, B. Barbu
Observations of lenticular galaxies at the 6m telescope of the Special Astrophysical Observatory
This is a historical review covering the last 30 years of the observational
study of lenticular galaxies at the 6m telescope BTA of the Special
Astrophysical Observatory of the Russian Academy of Sciences. The development
of spectroscopic techniques at the BTA has allowed to get comprehensive
information about this class of stellar systems, starting from the study of
their nuclei in the late 80th towards quite exclusive results obtained in the
last years on the outermost parts of their large-scale stellar disks.Comment: 9 pages, to be published in "Ground-Based Astronomy in Russia. 21st
Century." Proceedings of all-Russian conference, September 21-25, 2020 Nizhny
Arkhyz, at the Special Astrophysical Observatory of RAS. Eds: I.I. Romanyuk,
I.A. Yakunin, A.F. Valeev, D.J. Kudryavtse