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  The main sequence of star-forming galaxies – II. A non-evolving slope at the high-mass end

Popesso, P., Morselli, L., Concas, A., Schreiber, C., Rodighiero, G., Cresci, G., et al. (2019). The main sequence of star-forming galaxies – II. A non-evolving slope at the high-mass end. Monthly Notices of the Royal Astronomical Society, 490(4), 5285-5299. doi:10.1093/mnras/stz2635.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-90AC-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-90AD-5
Genre: Journal Article

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Popesso, P., Author
Morselli, L., Author
Concas, A., Author
Schreiber, C., Author
Rodighiero, G., Author
Cresci, G., Author
Belli, S.1, Author              
Ilbert, O., Author
Erfanianfar, G.2, Author              
Mancini, C., Author
Inami, H., Author
Dickinson, M., Author
Pannella, M., Author
Elbaz, D., Author
Affiliations:
1Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              
2High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: By using the deepest available mid- and far-infrared surveys in the CANDELS, GOODS, and COSMOS fields we study the evolution of the main sequence (MS) of star-forming galaxies (SFGs) from z ∼ 0 to ∼ 2.5 at stellar masses larger than 1010 M. The MS slope and scatter are consistent with a rescaled version of the local relation and distribution, shifted at higher values of star formation rate (SFR) according to ∝ (1 + z⁠)3.2. The relation exhibits a bending at the high-mass end and a slightly increasing scatter as a function of the stellar mass. We show that the previously reported evolution of the MS slope, in the considered mass and redshift range, is due to a selection effect. The distribution of galaxies in the MS region at fixed stellar mass is well represented by a single lognormal distribution at all redshifts and masses, with starburst galaxies occupying the tail at high SFR.

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 Dates: 2019-09-21
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.1093/mnras/stz2635
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Title: Monthly Notices of the Royal Astronomical Society
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Source Genre: Journal
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Publ. Info: OXFORD : OXFORD UNIV PRESS
Pages: - Volume / Issue: 490 (4) Sequence Number: - Start / End Page: 5285 - 5299 Identifier: ISSN: 0035-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000021470