The Progenitors of Local Ultra-massive Galaxies Across Cosmic Time: from Dusty Star-bursting to Quiescent Stellar Populations
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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The Progenitors of Local Ultra-massive Galaxies Across Cosmic Time : from Dusty Star-bursting to Quiescent Stellar Populations. / Marchesini, Danilo; Muzzin, Adam; Stefanon, Mauro; Franx, Marijn; Brammer, Gabriel G.; Marsan, Cemile Z.; Vulcani, Benedetta; Fynbo, Johan Peter Uldall; Milvang-Jensen, Bo; Dunlop, James S.; Buitrago, Fernando.
I: Astrophysical Journal, Bind 794, 31.01.2014, s. 65-84.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - The Progenitors of Local Ultra-massive Galaxies Across Cosmic Time
T2 - from Dusty Star-bursting to Quiescent Stellar Populations
AU - Marchesini, Danilo
AU - Muzzin, Adam
AU - Stefanon, Mauro
AU - Franx, Marijn
AU - Brammer, Gabriel G.
AU - Marsan, Cemile Z.
AU - Vulcani, Benedetta
AU - Fynbo, Johan Peter Uldall
AU - Milvang-Jensen, Bo
AU - Dunlop, James S.
AU - Buitrago, Fernando
PY - 2014/1/31
Y1 - 2014/1/31
N2 - Using the UltraVISTA catalogs, we investigate the evolution in the 11.4~Gyr since $z=3$ of the progenitors of local ultra-massive galaxies ($\log{(M_{\rm star}/M_{\odot})}\approx11.8$; UMGs), providing a complete and consistent picture of how the most massive galaxies at $z=0$ have assembled. By selecting the progenitors with a semi-empirical approach using abundance matching, we infer a growth in stellar mass of 0.56$^{+0.35}_{-0.25}$ dex, 0.45$^{+0.16}_{-0.20}$~dex, and 0.27$^{+0.08}_{-0.12}$ dex from $z=3$, $z=2$, and $z=1$, respectively, to $z=0$. At $z 1$, the contribution from star-forming galaxies progressively increases, with the progenitors at $2z 1$, whereas the remaining was assembled via merging from $z\sim 1$ to the present. Most of the quenching of the star-forming progenitors happened between $z=2.75$ and $z=1.25$, in good agreement with the typical formation redshift and scatter in age of $z=0$ UMGs as derived from their fossil records. The progenitors of local UMGs, including the star-forming ones, never lived on the blue cloud since $z=3$. We propose an alternative path for the formation of local UMGs that refines previously proposed pictures and that is fully consistent with our findings.
AB - Using the UltraVISTA catalogs, we investigate the evolution in the 11.4~Gyr since $z=3$ of the progenitors of local ultra-massive galaxies ($\log{(M_{\rm star}/M_{\odot})}\approx11.8$; UMGs), providing a complete and consistent picture of how the most massive galaxies at $z=0$ have assembled. By selecting the progenitors with a semi-empirical approach using abundance matching, we infer a growth in stellar mass of 0.56$^{+0.35}_{-0.25}$ dex, 0.45$^{+0.16}_{-0.20}$~dex, and 0.27$^{+0.08}_{-0.12}$ dex from $z=3$, $z=2$, and $z=1$, respectively, to $z=0$. At $z 1$, the contribution from star-forming galaxies progressively increases, with the progenitors at $2z 1$, whereas the remaining was assembled via merging from $z\sim 1$ to the present. Most of the quenching of the star-forming progenitors happened between $z=2.75$ and $z=1.25$, in good agreement with the typical formation redshift and scatter in age of $z=0$ UMGs as derived from their fossil records. The progenitors of local UMGs, including the star-forming ones, never lived on the blue cloud since $z=3$. We propose an alternative path for the formation of local UMGs that refines previously proposed pictures and that is fully consistent with our findings.
KW - astro-ph.GA
KW - astro-ph.CO
M3 - Journal article
VL - 794
SP - 65
EP - 84
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
ER -
ID: 128853144