On the basis of the SDSS survey and spectral observations with the 6-m telescope of SAO RAS, we have peformed a detailed study of SDSS J170745+302056. By combination of its characteristics -- exponential surface brightness distribution, central surface brightness of stellar disk μ0(B)=23.25m/□", blue colors, low metallicity and low star formation rate -- the galaxy is a typical low surface brightness spiral galaxy. Exponential scalelength of the galaxy is ≈3 kpc, its optical diameter exceeds 20 kpc. SDSS J170745+302056 is a member of a group of five galaxies and probably it is in interaction with UGC 10716. The existence of a large low surface brightness galaxy in such a dense environment is very unusual.
@article{arxiv.1711.06084,
title = {SDSS J170745+302056: a low surface brightness galaxy in a group},
author = {V. P. Reshetnikov and S. S. Savchenko and A. V. Moiseev and O. V. Egorov},
journal= {arXiv preprint arXiv:1711.06084},
year = {2017}
}