From blue cloud to red sequence: Evidence of morphological transition prior to star formation quenching

Sampaio, V. M.; De Carvalho, R. R.; Ferreras, I.; Aragón Salamanca, A.; Parker, L. C.

Abstract

We present a study of a sample of 254 clusters from the SDSS-DR7 Yang Catalogue and an auxiliary sample of field galaxies to perform a detailed investigation on how galaxy quenching depends on both environment and galaxy stellar mass. Our samples are restricted to 0.03 ≤ z ≤ 0.1 and we only consider clusters with log (Mhalo/M) ≥ 14. Comparing properties of field and cluster galaxies in the blue cloud, green valley, and red sequence, we find evidence that field galaxies in the red sequence hosted star formation events $rm 2.1 pm 0.7$ Gyr ago, on average, more recently than galaxies in cluster environments. Dissecting the star formation rate versus stellar mass diagram we show how morphology rapidly changes after reaching the green valley region, while the star formation rate keeps decreasing. In addition, we use the relation between location in the projected phase space and infall time to explore the time delay between morphological and specific star formation rate variations. We estimate that the transition from late- to early-type morphology happens in Δtinf 1 Gyr, whereas the quenching of star formation takes 3 Gyr. The time-scale we estimate for morphological transitions is similar to the expected for the delayed-then-rapid quenching model. Therefore, we suggest that the delay phase is characterized mostly by morphological transition, which then contributes morphological quenching as an additional ingredient in galaxy evolution.

Citation

Sampaio, V. M., De Carvalho, R. R., Ferreras, I., Aragón Salamanca, A., & Parker, L. C. (2022). From blue cloud to red sequence: Evidence of morphological transition prior to star formation quenching. Monthly Notices of the Royal Astronomical Society, 509(1), 567-585. https://doi.org/10.1093/mnras/stab3018

• Journal Article Type: Article
• Acceptance Date: Oct 15, 2021
• Online Publication Date: Oct 21, 2021
• Publication Date: Jan 1, 2022
• Deposit Date: Oct 18, 2021
• Publicly Available Date: Oct 21, 2021
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Peer Reviewed: Peer Reviewed
• Volume: 509
• Issue: 1
• Pages: 567-585
• DOI: https://doi.org/10.1093/mnras/stab3018
• Public URL: https://nottingham-repository.worktribe.com/output/6500219
• Publisher URL: https://academic.oup.com/mnras/article-abstract/509/1/567/6407537?redirectedFrom=fulltext
• Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record V M Sampaio, R R de Carvalho, I Ferreras, A Aragón-Salamanca, L C Parker, From blue cloud to red sequence: evidence of morphological transition prior to star formation quenching, Monthly Notices of the Royal Astronomical Society, Volume 509, Issue 1, January 2022, Pages 567–585 is available online at: https://doi.org/10.1093/mnras/stab3018