Email this article SDSS J170745+302056: A low-surface-brightness galaxy in a group
- Authors: Reshetnikov V.P.1, Savchenko S.S.1, Moiseev A.V.2,3,4, Egorov O.V.2,4
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Affiliations:
- St. Petersburg State University
- Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz
- Space Research Institute
- Sternberg Astronomical Institute
- Issue: Vol 43, No 12 (2017)
- Pages: 812-819
- Section: Article
- URL: https://journal-vniispk.ru/1063-7737/article/view/190400
- DOI: https://doi.org/10.1134/S1063773717120064
- ID: 190400
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Abstract
Based on SDSS data and spectroscopic observations with the 6-m BTA telescope at SAO RAS, we have studied the galaxy SDSS J170745+302056. By the set of its characteristics— an exponential brightness distribution, a central stellar disk surface brightness μ0(B) = 23m. 25/—, blue colors, a low metallicity, and a moderate star formation rate—this galaxy belongs to typical low-surfacebrightness spiral galaxies. The exponential scale length of the galaxy’s disk is ≈3 kpc, while its optical diameter exceeds 20 kpc. SDSS J170745+302056 is a member of a group of five galaxies and possibly interacts with the galaxy UGC 10716. The existence of a large low-surface-brightness galaxy in such a dense environment is very unusual.
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About the authors
V. P. Reshetnikov
St. Petersburg State University
Author for correspondence.
Email: v.reshetnikov@spbu.ru
Russian Federation, Universitetski pr. 28, St. Petersburg, Peterhof, 198504
S. S. Savchenko
St. Petersburg State University
Email: v.reshetnikov@spbu.ru
Russian Federation, Universitetski pr. 28, St. Petersburg, Peterhof, 198504
A. V. Moiseev
Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz; Space Research Institute; Sternberg Astronomical Institute
Email: v.reshetnikov@spbu.ru
Russian Federation, Karachai-Cherkessian Republic, 357147; Profsoyuznaya ul. 84/32, Moscow, 117997; Universitetskii pr. 13, Moscow, 119992
O. V. Egorov
Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz; Sternberg Astronomical Institute
Email: v.reshetnikov@spbu.ru
Russian Federation, Karachai-Cherkessian Republic, 357147; Universitetskii pr. 13, Moscow, 119992
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