A Sample of Edge-on H i-rich Low Surface Brightness Galaxy Candidates in the 40% ALFALFA Catalog

• Published in: The Astrophysical journal. Supplement series Vol. 248; no. 2; pp. 33 - 43
• Main Authors: He, Min, Wu, Hong, Du, Wei, Liu, He-yang, Lei, Feng-jie, Zhao, Pin-song, Zhang, Bing-qing
• Format: Journal Article
• Language: English
• Published: Saskatoon The American Astronomical Society 01.06.2020; IOP Publishing
• Subjects: Alfalfa; Galaxies; Inclination; Low surface brightness galaxies; Night sky; Rotation; Sky surveys (astronomy); Surface brightness
• ISSN: 0067-0049; 1538-4365
• DOI: 10.3847/1538-4365/ab8ead

Low surface brightness galaxies (LSBGs) are defined as galaxies that are fainter than dark night sky and are important for studying our universe. Particularly, edge-on galaxies are useful for the study of rotational velocity and dynamical properties of galaxies. Hence here we focus on searching for edge-on LSBGs. In order to find these edge-on dim galaxies, a series of effects caused by inclination, including the surface brightness profile, internal extinction, and scale length, have been corrected. In this work, we present a catalog of 281 edge-on LSBG candidates, which are selected from the crossmatch between Sloan Digital Sky Survey Data Release 7 and the 40% ALFALFA catalog. We also present the properties of these edge-on LSBG candidates including the absolute magnitude, central surface brightness, B − V color, scale length, and relative thickness. Our result suggests that the correction of inclination effects is very important for obtaining a complete sample of LSBGs.