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Quenching, bursting, and galaxy shapes: colour transformation as a function of morphology

de Sá-Freitas, C. and Gonçalves, T. S. and de Carvalho, R. R. and Menéndez-Delmestre, K. and Barchi, P. H. and Sampaio, V. M. and Basu-Zych, Antara and Darvish, Behnam and Martin, Christopher (2022) Quenching, bursting, and galaxy shapes: colour transformation as a function of morphology. Monthly Notices of the Royal Astronomical Society, 509 (3). pp. 3889-3903. ISSN 0035-8711. doi:10.1093/mnras/stab3230.

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Different mechanisms for quenching star formation in galaxies are commonly invoked in the literature, but the relative impact of each one at different cosmic epochs is still unknown. In particular, the relation between these processes and morphological transformation remains poorly understood. In this work, we measure the effectiveness of changes in star formation rates by analysing a new parameter, the Star Formation Acceleration (SFA), as a function of galaxy morphology. This methodology is capable of identifying both bursting and quenching episodes that occurred in the preceding 300 Myr. We use morphological classification catalogues based on Deep Learning techniques. Our final sample has ∼14 200 spirals and ∼2500 ellipticals. We find that elliptical galaxies in the transition region have median shorter quenching time-scales (τ < 1 Gyr) than spirals (τ ≥ 1 Gyr). This result conforms to the scenario in which major mergers and other violent processes play a fundamental role in galaxy evolution for most ellipticals, not only quenching star formation more rapidly but also playing a role in morphological transformation. We also find that ∼two-thirds of galaxies bursting in the green valley in our sample are massive spirals (M_★ > 10^(11.0) M_⊕) with signs of disturbance. This is in accordance with the scenario where low-mass galaxies are losing their gas in an interaction with a massive galaxy: while the former is quenching, the last is being refueled and going through a burst, showing signs of recent interaction.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
de Sá-Freitas, C.0000-0002-7288-2925
Menéndez-Delmestre, K.0000-0003-3153-5123
Sampaio, V. M.0000-0001-6556-637X
Basu-Zych, Antara0000-0001-8525-4920
Darvish, Behnam0000-0003-4919-9017
Martin, Christopher0000-0002-8650-1644
Alternate Title:Quenching, bursting, and galaxy shapes: color transformation as a function of morphology
Additional Information:© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model ( Accepted 2021 November 3. Received 2021 November 3; in original form 2021 April 27. We would like to thank the anonymous referee for a productive report that helped clarify the results presented in this paper. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001. TSG would also like to thank the support of the National Research Council (Productivity in Research grant 314747/2020-6) and the Rio de Janeiro State Research Foundation (Young Scientist of Our State grant E-26/201.309/2021). The material is based upon work supported by NASA under award number 80GSFC21M0002. Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy Office of Science. The SDSS-III web site is SDSS-III is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS-III Collaboration including the University of Arizona, the Brazilian Participation Group, Brookhaven National Laboratory, Carnegie Mellon University, University of Florida, the French Participation Group, the German Participation Group, Harvard University, the Instituto de Astrofisica de Canarias, the Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins University, Lawrence Berkeley National Laboratory, Max Planck Institute for Astrophysics, Max Planck Institute for Extraterrestrial Physics, New Mexico State University, New York University, Ohio State University, Pennsylvania State University, University of Portsmouth, Princeton University, the Spanish Participation Group, University of Tokyo, University of Utah, Vanderbilt University, University of Virginia, University of Washington, and Yale University. Data Availability: The image and spectroscopic data underlying this article are available in the SDSS-III data base, at, and the GALEX data base at The SFA measurements and the Deep Learning morphological classification underlying this article will be shared on reasonable request to the corresponding author.
Group:Astronomy Department
Funding AgencyGrant Number
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)001
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)314747/2020-6
Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)E-26/201.309/2021
Alfred P. Sloan FoundationUNSPECIFIED
Participating InstitutionsUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Subject Keywords:galaxies: elliptical and lenticular, cD, galaxies: evolution, galaxies: spiral, galaxies: star formation
Issue or Number:3
Record Number:CaltechAUTHORS:20220309-967158000
Persistent URL:
Official Citation:C de Sá-Freitas, T S Gonçalves, R R de Carvalho, K Menéndez-Delmestre, P H Barchi, V M Sampaio, Antara Basu-Zych, Behnam Darvish, Christopher Martin, Quenching, bursting, and galaxy shapes: colour transformation as a function of morphology, Monthly Notices of the Royal Astronomical Society, Volume 509, Issue 3, January 2022, Pages 3889–3903,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:113863
Deposited By: George Porter
Deposited On:11 Mar 2022 20:29
Last Modified:11 Mar 2022 20:29

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