2022PASJ...74..612S -
Publ. Astron. Soc. Jap., 74, 612-612 (2022/June-3)
Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam.
SHIMAKAWA R., TANAKA M., BOTTRELL C., WU P.-F., CHANG Y.-Y., TOBA Y. and ALI S.
Abstract (from CDS):
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 deg
2, 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 EW
Hδ-D
n4000 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.
Abstract Copyright:
© The Author(s) 2022. Published by Oxford University Press on behalf of the Astronomical Society of Japan.
Journal keyword(s):
galaxies: evolution - galaxies: formation - galaxies: general - galaxies: spiral
VizieR on-line data:
<Available at CDS (J/PASJ/74/612): catalog.dat>
Status at CDS
:
All or part of tables of objects will be ingested in SIMBAD with priority 1.
Simbad objects:
2245
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