@article{412c189038b14e21ae1b0436e7c3752f,
title = "Illuminating Low Surface Brightness Galaxies with the Hyper Suprime-Cam Survey",
abstract = "We present a catalog of extended low surface brightness galaxies (LSBGs) identified in the Wide layer of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP). Using the first ∼200 deg2 of the survey, we have uncovered 781 LSBGs, spanning red (g - i ≥ 0.64) and blue (g - i < 0.64) colors and a wide range of morphologies. Since we focus on extended galaxies (r eff = 2.″5-14″), our sample is likely dominated by low-redshift objects. We define LSBGs to have mean surface brightnesses mag arcsec-2, which allows nucleated galaxies into our sample. As a result, the central surface brightness distribution spans a wide range of μ 0(g) = 18-27.4 mag arcsec-2, with 50% and 95% of galaxies fainter than 24.3 and 22 mag arcsec-2, respectively. Furthermore, the surface brightness distribution is a strong function of color, with the red distribution being much broader and generally fainter than that of the blue LSBGs, and this trend shows a clear correlation with galaxy morphology. Red LSBGs typically have smooth light profiles that are well characterized by single-component S{\'e}rsic functions. In contrast, blue LSBGs tend to have irregular morphologies and show evidence for ongoing star formation. We cross-match our sample with existing optical, H i, and ultraviolet catalogs to gain insight into the physical nature of the LSBGs. We find that our sample is diverse, ranging from dwarf spheroidals and ultradiffuse galaxies in nearby groups to gas-rich irregulars to giant LSB spirals, demonstrating the potential of the HSC-SSP to provide a truly unprecedented view of the LSBG population.",
keywords = "galaxies: dwarf, galaxies: general",
author = "Greco, {Johnny P.} and Greene, {Jenny E.} and Strauss, {Michael A.} and Macarthur, {Lauren A.} and Xzavier Flowers and Goulding, {Andy D.} and Song Huang and Kim, {Ji Hoon} and Yutaka Komiyama and Alexie Leauthaud and Lukas Leisman and Lupton, {Robert H.} and Crist{\'o}bal Sif{\'o}n and Wang, {Shiang Yu}",
note = "Funding Information: J.P.G. was supported by the National Science Foundation partially under grant no. AST 1713828 and partially through the Graduate Research Fellowship Program under grant no. DGE 1148900. Funding Information: The Hyper Suprime-Cam (HSC) collaboration includes the astronomical communities of Japan and Taiwan and Princeton University. The HSC instrumentation and software were developed by the National Astronomical Observatory of Japan (NAOJ), the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), the University of Tokyo, the High Energy Accelerator Research Organization (KEK), the Academia Sinica Institute for Astronomy and Astrophysics in Taiwan (ASIAA), and Princeton University. Funding was contributed by the FIRST program from Japanese Cabinet Office, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), the Japan Society for the Promotion of Science (JSPS), Japan Science and Technology Agency (JST), the Toray Science Foundation, NAOJ, Kavli IPMU, KEK, ASIAA, and Princeton University. Funding Information: Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. Funding Information: We thank David Spergel and Jim Gunn for useful discussions about the galaxies in our sample. J.P.G. thanks Jim Bosch and Paul Price for their assistance with the LSST codebase, Adrian Price-Whelan for general coding advice, and Semyeong Oh for useful conversations and for sharing data presented in Figure 7. J.P.G. was supported by the National Science Foundation partially under grant no. AST 1713828 and partially through the Graduate Research Fellowship Program under grant no. DGE 1148900. Funding Information: The Pan-STARRS1 Surveys (PS1) have been made possible through contributions of the Institute for Astronomy, the University of Hawaii, the Pan-STARRS Project Office, the Max-Planck Society and its participating institutes, the Max Planck Institute for Astronomy, Heidelberg and the Max Planck Institute for Extraterrestrial Physics, Garching, Johns Hopkins University, Durham University, the University of Edinburgh, Queens University Belfast, the Harvard-Smithsonian Center for Astrophysics, the Las Cumbres Observatory Global Telescope Network Incorporated, the National Central University of Taiwan, the Space Telescope Science Institute, the National Aeronautics and Space Administration under grant no. NNX08AR22G issued through the Planetary Science Division of the NASA Science Mission Directorate, the National Science Foundation under grant no. AST-1238877, the University of Maryland, and Eotvos Lorand University (ELTE) and the Los Alamos National Laboratory. Publisher Copyright: {\textcopyright} 2018. The American Astronomical Society. All rights reserved.",
year = "2018",
month = apr,
day = "20",
doi = "10.3847/1538-4357/aab842",
language = "English (US)",
volume = "857",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",
}