2013MNRAS.431..648W

Query : 2013MNRAS.431..648W

2013MNRAS.431..648W - Mon. Not. R. Astron. Soc., 431, 648-661 (2013/May-1)

Connecting stellar mass and star-formation rate to dark matter halo mass out to z ∼ 2.

WANG L., FARRAH D., OLIVER S.J., AMBLARD A., BETHERMIN M., BOCK J., CONLEY A., COORAY A., HALPERN M., HEINIS S., IBAR E., ILBERT O., IVISON R.J., MARSDEN G., ROSEBOOM I.G., ROWAN-ROBINSON M., SCHULZ B., SMITH A.J., VIERO M. and ZEMCOV M.

Abstract (from CDS):

We have constructed an extended halo model (EHM) which relates the total stellar mass and star-formation rate (SFR) to halo mass (Mh). An empirical relation between the distribution functions of total stellar mass of galaxies and host halo mass, tuned to match the spatial density of galaxies over 0 < z < 2 and the clustering properties at z ∼ 0, is extended to include two different scenarios describing the variation of SFR on Mh. We also present new measurements of the redshift evolution of the average SFR for star-forming galaxies of different stellar masses up to z = 2, using data from the Herschel Multi-tiered Extragalactic Survey for infrared bright galaxies.

Combining the EHM with the halo accretion histories from numerical simulations, we trace the stellar mass growth and star-formation history in haloes spanning a range of masses. We find that: (1) the intensity of the star-forming activity in haloes in the probed mass range has steadily decreased from z ∼ 2 to 0; (2) at a given epoch, haloes in the mass range between a few times 1011M☉ and a few times 1012M☉ are the most efficient at hosting star formation; (3) the peak of SFR density shifts to lower mass haloes over time; and (4) galaxies that are forming stars most actively at z ∼ 2 evolve into quiescent galaxies in today's group environments, strongly supporting previous claims that the most powerful starbursts at z ∼ 2 are progenitors of today's elliptical galaxies.


Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): methods: statistical - cosmology: observations - large-scale structure of Universe - infrared: galaxies

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
2 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 862 0
3 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
4 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0
5 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1967 1
6 NAME Extended Groth Strip reg 14 19 +52.8           ~ 1023 0

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