The structure of the stellar disks of southern S0 galaxies in sparse environments
- Authors: Sil’chenko O.K.1, Kniazev A.Y.1,2,3, Chudakova E.M.1
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Affiliations:
- Sternberg Astronomical Institute
- South African Astronomical Observatory
- Southern African Large Telescope
- Issue: Vol 60, No 1 (2016)
- Pages: 73-86
- Section: Article
- URL: https://journals.rcsi.science/1063-7729/article/view/189559
- DOI: https://doi.org/10.1134/S1063772915120057
- ID: 189559
Cite item
Abstract
Surface photometry data are presented for 12 southern lenticular galaxies located in regions of low density. Digital images in the gri bands were obtained on the LCOGT network of meter-class telescopes. Structural parameters of the global stellar disks of the galaxies are calculated—the exponential scale and relative thickness. The presence of substructure in the disks is noted; in particular, more than half the studied galaxies possess ring structures, sometimes more than one. The color maps presented indicate complex evolution of the substructure of the disks of lenticular galaxies: they can be classified as blue (ongoing star formation) or red (concentration of dust). The rings do not always lie in the main plane of the disk; there are cases of clearly inclined, or even polar, compact rings.
About the authors
O. K. Sil’chenko
Sternberg Astronomical Institute
Author for correspondence.
Email: sil@sai.msu.su
Russian Federation, Moscow
A. Yu. Kniazev
Sternberg Astronomical Institute; South African Astronomical Observatory; Southern African Large Telescope
Email: sil@sai.msu.su
Russian Federation, Moscow; Observatory, 7935; Old Fraserburg Road, Sutherland, 6920
E. M. Chudakova
Sternberg Astronomical Institute
Email: sil@sai.msu.su
Russian Federation, Moscow