2022A&A...666A.141M


Query : 2022A&A...666A.141M

2022A&A...666A.141M - Astronomy and Astrophysics, volume 666A, 141 (2022/10-1)

Revealing impacts of stellar mass and environment on galaxy quenching.

MAO Z., KODAMA T., PEREZ-MARTINEZ J.M., SUZUKI T.L., YAMAMOTO N. and ADACHI K.

Abstract (from CDS):


Aims. Galaxy quenching is a critical step in galaxy evolution. In this work, we present a statistical study of galaxy quenching in 17 cluster candidates at 0.5 < z < 1.0 in the COSMOS field.
Methods. We selected cluster members with a wide range of stellar masses and environments to study their mass and environment dependence. Member galaxies are classified into star-forming, quiescent, and recently quenched galaxies (RQGs) using the rest-frame UVJ diagram. We further separated fast- and slow-quenching RQGs by model evolutionary tracks on the UVJ diagram. We defined the quenching efficiency as the ratio of RQGs to star-forming galaxies and the quenching stage as the ratio of RQGs to quiescent galaxies to quantify the quenching processes.
Results. We find that quenching efficiency is enhanced by both higher stellar mass and denser environment. Massive or dense environment galaxies quench earlier. Slow quenching is more dominant for massive galaxies and at lower redshifts, but no clear dependence on the environment is found. Our results suggest that low-mass galaxies in dense environments are likely quenched through a short timescale process such as ram pressure stripping, while massive galaxies in a sparse environment are mostly quenched by a longer timescale process. Using the line strength of Hδ and [OII], we confirmed that our UVJ method to select RQGs agrees with high S/N DEIMOS spectra. However, we caution that the visibility time (duration of a galaxy's stay in the RQG region on the UVJ diagram) may also depend on mass or environment. The method introduced in this work can be applied to RQG candidates for future statistical RQG spectroscopic surveys. The systematic spectroscopic RQG study will disentangle the degeneracy between visibility time and quenching properties.

Abstract Copyright: © Z. Mao et al. 2022

Journal keyword(s): galaxies: evolution - galaxies: clusters: general - galaxies: star formation - galaxies: high-redshift - galaxies: photometry

Status at CDS : Examining the need for a new acronym.

Simbad objects: 18

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Number of rows : 18
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 SDSS J095817.35+021545.6 AGN 09 58 17.37 +02 15 45.8 23.88 23.287 22.529   20.325 ~ 33 0
2 COSMOS2015 777794 rG 09 59 30.414 +02 28 35.45 25.06 24.52 23.29 22.61 21.567 ~ 19 0
3 [BMH2011] 24 ClG 09 59 41 +02 31.3           ~ 1 0
4 COSMOS2015 816527 rG 09 59 42.720 +02 32 06.34 24.17 23.60 22.34 21.521 20.585 ~ 23 0
5 COSMOS2015 908883 AGN 09 59 53.910 +02 40 43.31   23.468 22.580     ~ 18 0
6 SDSS J100028.46+021322.9 rG 10 00 28.45 +02 13 23.2 25.75 25.36 24.06 23.35 22.139 ~ 21 0
7 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 2981 0
8 SDSS J100048.81+015409.2 G 10 00 48.823 +01 54 09.39 23.89 23.55 22.51 21.841 20.801 ~ 17 0
9 [GFT2019] Group 20035 GrG 10 00 50.41 +01 49 12.1           ~ 4 0
10 COSMOS2015 758494 G 10 01 17.582 +02 26 57.23 24.01 23.84 23.11 22.58 21.564 ~ 12 0
11 ACS-GC 20011782 AGN 10 01 32.87 +01 38 47.2   23.256 22.569   20.881 ~ 22 0
12 COSMOS2015 353441 G 10 01 38.87 +01 49 52.3 24.85 24.52 23.31 22.51 21.219 ~ 10 0
13 [GFT2019] Group 20069 GrG 10 01 40.716 +01 58 25.75           ~ 2 0
14 [BMH2011] 19 ClG 10 01 46 +01 53.0           ~ 1 0
15 [AFH2012] 52 GrG 10 01 47.57 +01 52 58.8           ~ 7 0
16 COSMOS2015 621801 G 10 01 59.21 +02 14 34.4   23.537 22.828   21.206 ~ 12 0
17 [VV2006] J100159.5+023935 QSO 10 01 59.4219270984 +02 39 35.658657576   21.102 20.6617   20.43 ~ 35 0
18 [BMH2011] 17 ClG 10 02 22 +02 28.4           ~ 1 0

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