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Implications of a Temperature-dependent Initial Mass Function. III. Mass Growth and Quiescence

Steinhardt, Charles L. and Sneppen, Albert and Hensley, Hagan and Jermyn, Adam S. and Mostafa, Basel and Weaver, John R. and Brammer, Gabriel and Clark, Thomas H. and Davidzon, Iary and Diaconu, Andrei C. and Mobasher, Bahram and Rusakov, Vadim and Toft, Sune (2022) Implications of a Temperature-dependent Initial Mass Function. III. Mass Growth and Quiescence. Astrophysical Journal, 934 (1). Art. No. 22. ISSN 0004-637X. doi:10.3847/1538-4357/ac7642.

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The stellar initial mass function (IMF) is predicted to depend upon the temperature of gas in star-forming molecular clouds. The introduction of an additional parameter, T_(IMF), into photometric template fitting suggests most galaxies obey an IMF top heavier than the Galactic IMF. The implications of the revised fit on mass function, quiescence, and turnoff are discussed. At all redshifts, the highest-mass galaxies become quiescent first with the turnoff mass decreasing toward the present. The synchronous turnoff mass across galaxies suggests quiescence is driven by universal mechanisms rather than by stochastic or environmental processes.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Steinhardt, Charles L.0000-0003-3780-6801
Sneppen, Albert0000-0002-5460-6126
Jermyn, Adam S.0000-0001-5048-9973
Weaver, John R.0000-0003-1614-196X
Brammer, Gabriel0000-0003-2680-005X
Clark, Thomas H.0000-0003-3873-968X
Davidzon, Iary0000-0002-2951-7519
Diaconu, Andrei C.0000-0002-6459-8772
Rusakov, Vadim0000-0001-7633-3985
Toft, Sune0000-0003-3631-7176
Alternate Title:Implications of a Temperature Dependent IMF III: Mass Growth and Quiescence
Additional Information:© 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2021 September 21; revised 2022 April 25; accepted 2022 June 2; published 2022 July 21. The authors would like to thank Vasily Kokorev and Darach Watson for useful discussions. C.L.S. is supported by ERC grant 648179 "ConTExt". B.M. is supported by the Tombrello Fellowship. A.L. is supported by the Selove Prize. The Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation under grant No. 140. The Flatiron Institute is supported by the Simons Foundation.
Funding AgencyGrant Number
European Research Council (ERC)648179
Caltech Thomas A. Tombrello FellowshipUNSPECIFIED
Danish National Research Foundation140
Simons FoundationUNSPECIFIED
Subject Keywords:Galaxy evolution; Initial mass function; Star formation; Galaxy quenching; Stellar mass functions
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Galaxy evolution (594); Initial mass function (796); Star formation (1569); Galaxy quenching (2040); Stellar mass functions (1612)
Record Number:CaltechAUTHORS:20220726-997869000
Persistent URL:
Official Citation:Charles L. Steinhardt et al 2022 ApJ 934 22
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115859
Deposited By: George Porter
Deposited On:27 Jul 2022 20:59
Last Modified:27 Jul 2022 20:59

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