J/PASJ/74/612 Passive spiral galaxies (Shimakawa+, 2022)
Passive spiral galaxies deeply captured by Subaru Hyper Suprime-Cam.
Shimakawa R., Tanaka M., Bottrell C., Wu P.-F., Chang Y.-Y., Toba Y.,
Ali S.
<Publ. Astron. Soc. Jap., 74, 612-624 (2022)>
=2022PASJ...74..612S 2022PASJ...74..612S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Redshifts ; Optical
Keywords: galaxies: evolution - galaxies: formation - galaxies: general -
galaxies: spiral
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
EWHα-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.
Description:
Based on the deep learning morphology classification for the HSC-SSP
PDR3 imaging data, we constructed 1100 passive spiral samples at z<0.3
over 1072deg2, which are in a quiescent phase as inferred from their
UV to mid-IR SEDs by the GSWLC-2 catalog (Salim et al.
2016ApJS..227....2S 2016ApJS..227....2S, 2018ApJ...859...11S 2018ApJ...859...11S). As a result, we obtained
1100 relatively reliable passive spirals and 1141 secondary samples
consisting of ringed S0, pseudo-ringed galaxies, and false detection
or peculiar types through visual inspection. Validation flags based on
visual inspections by authors and selections with deeper UV data will
allow users to select more (or less) secure passive spirals flexibly.
All data related to this study are publicly available on the data
release site of the HSC-SSP PDR3
(https://hsc.mtk.nao.ac.jp/ssp/data-release/).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 123 2241 Passive spiral catalog
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See also:
https://hsc.mtk.nao.ac.jp/ssp/data-release : HSC-SSP PDR3 Home Page
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 17 I17 --- HSC3 object_id in HSC-SSP PDR3 (1)
19- 37 I19 --- SDSS object_id in SDSS (GSWLC) (2)
39- 58 F20.16 deg RAdeg Right ascension (J2000)
60- 78 F19.16 deg DEdeg Declination (J2000)
80- 91 F12.10 --- z Spectroscopic redshift from SDSS DR15 (3)
93-102 F10.8 --- ypred [0.5/1] Probability value by CNN classification
104-121 F18.16 --- flag-vc [0/1] Vote fraction for suspicious objects (4)
123 A1 --- flag-uv [MD] Validation flag with in-depth UV data (5)
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Note (1): Refer to Aihara et al. (2022PASJ...74..247A 2022PASJ...74..247A).
Note (2): Cross-match within 1" to Salim, Boquien and Lee (2018ApJ...859...11S 2018ApJ...859...11S).
Note (3): Cross-match to Aguado et al. (2019ApJS..240...23A 2019ApJS..240...23A) on the HSC-SSP
database.
Note (4): See subsection 3.2 for details.
Note (5): Flag as follows (see subsection 3.2):
M = sources remain passive even in the SFR-M☉ plain based on GSWLC-M
D = sources remain passive even in the SFR-M☉ plain based on GSWLC-D
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History:
Copied at
hsc-release.mtk.nao.ac.jp/doc/index.php/passivespiralgalaxycatalog_pdr3
(End) Patricia Vannier [CDS] 02-Nov-2023