prikaz prve stranice dokumenta Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS
  Download
PDF 4.01 MB
Scientific paper - Original scientific paper
Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS
Astronomy and Astrophysics, 579 (2015); A2. https://doi.org/10.1051/0004-6361/201425176
Ilbert, O.; Arnouts, S.; Le Floc’h, E.; Aussel, H.; Bethermin, M.; Capak, P.; Hsieh, B.-C.; Kajisawa, M.; Karim, A.; Le Fèvre, O.; Lee, N.; Lilly, S.; McCracken, H. J.; Michel-Dansac, L.; Moutard, T.; Renzini, M. A.; Salvato, M.; Sanders, D. B.; Scoville, N.; Sheth, K.; Silverman, J. D.; Smolčić, Vernesa; Taniguchi, Y.; Tresse, L. More authors...

Cite this document

Ilbert, O., Arnouts, S., Le Floc’h, E., Aussel, H., Bethermin, M., Capak, P. ... Tresse, L. (2015). Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS. Astronomy and Astrophysics, 579.. doi: 10.1051/0004-6361/201425176

Ilbert, O., et al. "Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS." Astronomy and Astrophysics, vol. 579, 2015. https://doi.org/10.1051/0004-6361/201425176

Ilbert, O., S. Arnouts, E. Le Floc’h, H. Aussel, M. Bethermin, P. Capak, B. C. Hsieh, et al. "Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS." Astronomy and Astrophysics 579 (2015). https://doi.org/10.1051/0004-6361/201425176

Ilbert, O., et al. (2015) 'Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS', Astronomy and Astrophysics, 579. doi: 10.1051/0004-6361/201425176

Ilbert O, Arnouts S, Le Floc’h E, Aussel H, Bethermin M, Capak P, and sur.. Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS. Astronomy and Astrophysics [Internet]. 2015 [cited 2025 January 01];579. doi: 10.1051/0004-6361/201425176

O. Ilbert, et al., "Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS", Astronomy and Astrophysics, vol. 579, 2015. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:909482. [Accessed: 01 January 2025]

Please login to the repository to save this object to your list.
Metadata
Title (english)Evolution of the specific star formation rate function at z < 1.4 Dissecting the mass-SFR plane in COSMOS and GOODS
AuthorO. Ilbert
AuthorS. Arnouts
AuthorE. Le Floc’h
AuthorH. Aussel
AuthorM. Bethermin
AuthorP. Capak
AuthorB.-C. Hsieh
AuthorM. Kajisawa
AuthorA. Karim
AuthorO. Le Fèvre
AuthorN. Lee
AuthorS. Lilly
AuthorH. J. McCracken
AuthorL. Michel-Dansac
AuthorT. Moutard
AuthorM. A. Renzini
AuthorM. Salvato
AuthorD. B. Sanders
AuthorN. Scoville
AuthorK. Sheth
AuthorJ. D. Silverman
AuthorVernesa Smolčić
AuthorY. Taniguchi
AuthorL. Tresse
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Astronomy and Astrophysics
Abstract (english)
The relation between the stellar mass (M⋆) and the star formation rate (SFR) characterizes how the instantaneous star formation is determined by the galaxy past star formation history and by the growth of the dark matter structures. We deconstruct the M⋆-SFR plane by measuring the specific SFR functions in several stellar mass bins from z = 0.2 out to z = 1.4 (specific SFR = SFR/M⋆, noted sSFR). Our analysis is primary based on a 24 μm selected catalogue combining the COSMOS and GOODS surveys. We estimate the SFR by combining mid- and far-infrared data for 20500 galaxies. The sSFR functions are derived in four stellar mass bins within the range 9.5 < log (M⋆ /M⊙) < 11.5. First, we demonstrate the importance of taking into account selection effects when studying the M⋆-SFR relation. Secondly, we find a mass-dependent evolution of the median sSFR with redshift varying as sSFR ∝ (1 + z)^b, with b increasing from b = 2.88^(±0.12) to b = 3.78^(± 0.60) between M⋆ = 10^(9.75) M⊙ and M⋆ = 10^(11.1) M⊙, respectively. At low masses, this evolution is consistent with the cosmological accretion rate and predictions from semi-analytical models (SAM). This agreement breaks down for more massive galaxies showing the need for a more comprehensive description of the star formation history in massive galaxies. Third, we obtain that the shape of the sSFR function is invariant with time at z< 1.4 but depends on the mass. We observe a broadening of the sSFR function ranging from 0.28 dex at M⋆ = 10^(9.75) M⊙ to 0.46 dex at M⋆ = 10^(11.1) M⊙. Such increase in the intrinsic scatter of the M⋆-SFR relation suggests an increasing diversity ofstar formation histories (SFHs) as the stellar mass increases. Finally, we find a gradual decline of the sSFR with stellar mass as log _(10)(sSFR) ∝ −0.17M⋆. We discuss the numerous physical processes, as gas exhaustion in hot gas halos or secular evolution, which can gradually reduce the sSFR and increase the SFH diversity.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleAstronomy and Astrophysics
Numberingvol. 579, A2
p-ISSN0004-6361
DOIhttps://doi.org/10.1051/0004-6361/201425176
URN:NBNurn:nbn:hr:217:909482
Publication2015
Document URLhttps://www.aanda.org/articles/aa/abs/2015/07/aa25176-14/aa25176-14.html
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2015 ESO. Article published by EDP Sciences. Received 17 October 2014. Accepted 2 March 2015. Published online 19 June 2015.
Created on2020-01-18 16:32:30