Ultradiffuse Galaxies (UDGs) with Hyper Suprime-Cam. I. Revised Catalog of Coma Cluster UDGs*

Bautista, Jose Miguel G.; Koda, Jin; Yagi, Masafumi; Komiyama, Yutaka; Yamanoi, Hitomi

doi:10.3847/1538-4365/acd3e7

Ultradiffuse Galaxies (UDGs) with Hyper Suprime-Cam. I. Revised Catalog of Coma Cluster UDGs*

Journal Article · Wed Jul 05 00:00:00 EDT 2023 · The Astrophysical Journal. Supplement Series

DOI:https://doi.org/10.3847/1538-4365/acd3e7· OSTI ID:2425378

Bautista, Jose Miguel G. ^[1]; ^[1]; ^[2]; ^[3]; ^[4]

Stony Brook University, NY (United States)
National Astronomical Observatory of Japan, Tokyo (Japan)
National Astronomical Observatory of Japan, Tokyo (Japan); Hosei University, Tokyo (Japan); Graduate University for Advanced Studies (SOKENDAI), Tokyo (Japan)
Seikei University, Tokyo (Japan)

This is the first in a series of papers on the properties of ultradiffuse galaxies (UDGs) in clusters of galaxies. We present an updated catalog of UDGs in the Coma Cluster using g- and r-band images obtained with Hyper Suprime-Cam (HSC) of the Subaru telescope. We develop a method to find UDGs even in the presence of contaminating objects, such as halos and background galaxies. This study expands upon our previous works that covered about half the area of the Coma Cluster. The HSC observations covered the whole Coma Cluster up to the virial radius and beyond (an area twice as large as the previous studies) and doubled the numbers of UDGs (r_eff, r ≥ 1.5 kpc) and sub-UDGs (1.0 ≤ r_eff, r < 1.5 kpc) to 774 and 729, respectively. The new UDGs show internal properties consistent with those of previous studies (e.g., a Sérsic index of approximately 1), and are distributed across the cluster, with a concentration around the cluster center. The whole cluster coverage clearly revealed an excess of their distribution toward the east to southwest direction along the cluster center, where Coma connects to other large-scale structure, and where a known substructure exists (the NGC 4839 subgroup). The alignment of the UDG distribution along the large-scale structure around Coma supports the interpretation that most of them lie at the distance of the Coma Cluster and the NGC 4839 subgroup.

View Accepted Manuscript (DOE)

Research Organization:: US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)

Sponsoring Organization:: USDOE

OSTI ID:: 2425378

Journal Information:: The Astrophysical Journal. Supplement Series, Journal Name: The Astrophysical Journal. Supplement Series Journal Issue: 1 Vol. 267; ISSN 0067-0049

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Systematically Measuring Ultra-diffuse Galaxies (SMUDGes). II. Expanded Survey Description and the Stripe 82 Catalog Zaritsky, Dennis; Donnerstein, Richard; Karunakaran, Ananthan The Astrophysical Journal Supplement Series, Vol. 257, Issue 2 https://doi.org/10.3847/1538-4365/ac2607	journal	December 2021
The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar, and APOGEE-2 Data No authors listed The Astrophysical Journal Supplement Series, Vol. 259, Issue 2, p. 35 https://doi.org/10.3847/1538-4365/ac4414	journal	March 2022
Systematically Measuring Ultra-diffuse Galaxies (SMUDGes). III. The Southern SMUDGes Catalog Zaritsky, Dennis; Donnerstein, Richard; Karunakaran, Ananthan The Astrophysical Journal Supplement Series, Vol. 261, Issue 2 https://doi.org/10.3847/1538-4365/ac6ceb	journal	July 2022
Evidence for Ultra-diffuse Galaxy “Formation” through Galaxy Interactions Bennet, P.; Sand, D. J.; Zaritsky, D. The Astrophysical Journal, Vol. 866, Issue 1 https://doi.org/10.3847/2041-8213/aadedf	journal	October 2018
Lessons on Star-forming Ultra-diffuse Galaxies from the Stacked Spectra of the Sloan Digital Sky Survey Rong, Yu; Zhu, Kai; Johnston, Evelyn J. The Astrophysical Journal Letters, Vol. 899, Issue 1 https://doi.org/10.3847/2041-8213/aba8aa	journal	August 2020
Ultra-diffuse Galaxies Are a Subset of Cluster Dwarf Elliptical/Spheroidal Galaxies Conselice, Christopher J. Research Notes of the AAS, Vol. 2, Issue 1 https://doi.org/10.3847/2515-5172/aab7f6	journal	January 2018

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