Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam
Abstract
Abstract This paper presents a thousand passive spiral galaxy samples at z = 0.01–0.3 based on a combined analysis of the Third Public Data Release of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP PDR3) and the GALEX–SDSS–WISE Legacy Catalog (GSWLC-2). Among 54871 gri galaxy cutouts taken from the HSC-SSP PDR3 over 1072 deg2, we conducted a search with deep-learning morphological classification for candidates of passive spirals below the star-forming main sequence derived by ultraviolet to mid-infrared spectral energy distribution fitting in the GSWLC-2. We then classified the candidates into 1100 passive spirals and 1141 secondary samples based on visual inspections. Most of the latter cases are considered to be passive ringed S0 or pseudo-ringed galaxies. The remaining secondary samples have ambiguous morphologies, including two peculiar objects with diamond-shaped stellar wings. The selected passive spirals have a similar distribution to the general quiescent galaxies on the EWHδ–Dn4000 diagram and concentration indices. Moreover, we detected an enhanced passive fraction of spiral galaxies in X-ray clusters. Passive spirals in galaxy clusters are preferentially located in the midterm or late infall phase on the phase–space diagram, supporting the ram pressure scenario, which has been widely advocated in previous studies. The source catalog and gri-composite images are availablemore »
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1867980
- Resource Type:
- Published Article
- Journal Name:
- Publications of the Astronomical Society of Japan
- Additional Journal Information:
- Journal Name: Publications of the Astronomical Society of Japan Journal Volume: 74 Journal Issue: 3; Journal ID: ISSN 0004-6264
- Publisher:
- Oxford University Press
- Country of Publication:
- Japan
- Language:
- English
Citation Formats
Shimakawa, Rhythm, Tanaka, Masayuki, Bottrell, Connor, Wu, Po-Feng, Chang, Yu-Yen, Toba, Yoshiki, and Ali, Sadman. Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam. Japan: N. p., 2022.
Web. doi:10.1093/pasj/psac023.
Shimakawa, Rhythm, Tanaka, Masayuki, Bottrell, Connor, Wu, Po-Feng, Chang, Yu-Yen, Toba, Yoshiki, & Ali, Sadman. Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam. Japan. https://doi.org/10.1093/pasj/psac023
Shimakawa, Rhythm, Tanaka, Masayuki, Bottrell, Connor, Wu, Po-Feng, Chang, Yu-Yen, Toba, Yoshiki, and Ali, Sadman. Mon .
"Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam". Japan. https://doi.org/10.1093/pasj/psac023.
@article{osti_1867980,
title = {Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam},
author = {Shimakawa, Rhythm and Tanaka, Masayuki and Bottrell, Connor and Wu, Po-Feng and Chang, Yu-Yen and Toba, Yoshiki and Ali, Sadman},
abstractNote = {Abstract This paper presents a thousand passive spiral galaxy samples at z = 0.01–0.3 based on a combined analysis of the Third Public Data Release of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP PDR3) and the GALEX–SDSS–WISE Legacy Catalog (GSWLC-2). Among 54871 gri galaxy cutouts taken from the HSC-SSP PDR3 over 1072 deg2, we conducted a search with deep-learning morphological classification for candidates of passive spirals below the star-forming main sequence derived by ultraviolet to mid-infrared spectral energy distribution fitting in the GSWLC-2. We then classified the candidates into 1100 passive spirals and 1141 secondary samples based on visual inspections. Most of the latter cases are considered to be passive ringed S0 or pseudo-ringed galaxies. The remaining secondary samples have ambiguous morphologies, including two peculiar objects with diamond-shaped stellar wings. The selected passive spirals have a similar distribution to the general quiescent galaxies on the EWHδ–Dn4000 diagram and concentration indices. Moreover, we detected an enhanced passive fraction of spiral galaxies in X-ray clusters. Passive spirals in galaxy clusters are preferentially located in the midterm or late infall phase on the phase–space diagram, supporting the ram pressure scenario, which has been widely advocated in previous studies. The source catalog and gri-composite images are available on the HSC-SSP PDR3 website 〈https://hsc.mtk.nao.ac.jp/ssp/data-release/〉. Future updates, including integration with a citizen science project dedicated to the HSC data, will achieve more effective and comprehensive classifications.},
doi = {10.1093/pasj/psac023},
journal = {Publications of the Astronomical Society of Japan},
number = 3,
volume = 74,
place = {Japan},
year = {Mon May 16 00:00:00 EDT 2022},
month = {Mon May 16 00:00:00 EDT 2022}
}
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