New Low Surface Brightness Dwarf Galaxies Detected Around Nearby Spirals
Abstract
We conduct a survey of low surface brightness (LSB) satellite galaxies around the Local Volume massive spirals using long exposures with small amateur telescopes. We identified 27 low and very low surface brightness objects around the galaxies NGC,672, 891, 1156, 2683, 3344, 4258, 4618, 4631, and 5457 situated within 10 Mpc from us, and found nothing new around NGC,2903, 3239, 4214, and 5585. Assuming that the dwarf candidates are the satellites of the neighboring luminous galaxies, their absolute magnitudes are in the range of -8.6 > M_B > -13.3, their effective diameters are 0.4-4.7 kpc, and the average surface brightness is 26.1 mag/sq arcsec. The mean linear projected separation of the satellite candidates from the host galaxies is 73 kpc. Our spectroscopic observations of two LSB dwarfs with the Russian 6-meter telescope confirm their physical connection to the host galaxies NGC,891 and NGC,2683.
Keywords
Cite
@article{arxiv.1511.00955,
title = {New Low Surface Brightness Dwarf Galaxies Detected Around Nearby Spirals},
author = {I. D. Karachentsev and P. Riepe and T. Zilch and M. Blauensteiner and M. Elvov and P. Hochleitner and B. Hubl and G. Kerschhuber and S. Küppers and F. Neyer and R. Pölzl and P. Remmel and O. Schneider and R. Sparenberg and U. Trulson and G. Willems and H. Ziegler},
journal= {arXiv preprint arXiv:1511.00955},
year = {2016}
}
Comments
13 pages, 9 figures, 2 tables, accepted in the Astrophysical Bulletin, 2015, 70, 4