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GAMA/G10-COSMOS/3D-HST: The 0<z<5 cosmic star-formation history, stellar- and dust-mass densities | | Simon P. Driver
; Stephen K. Andrews
; Elisabete da Cunha
; Luke J. Davies
; Claudia Lagos
; Aaron S.G. Robotham
; Kevin Vinsen
; Angus H. Wright
; Mehmet Alpaslan
; Joss Bland-Hawthorn
; Nathan Bourne
; Sarah Brough
; Malcolm N. Bremer
; Michelle Cluver
; Matthew Colless
; Christopher J. Conselice
; Loretta Dunne
; Steve A. Eales
; Haley Gomez
; Benne Holwerda
; Andrew M. Hopkins
; Prajwal R. Kafle
; Lee S. Kelvin
; Jon Loveday
; Jochen Liske
; Steve J. Maddox
; Steven Phillipps
; Kevin Pimbblet
; Kate Rowlands
; Anne E. Sansom
; Edward Taylor
; Lingyu Wang
; Stephen M. Wilkins
; | | Date: |
18 Oct 2017 | | Abstract: | We use the energy-balance code MAGPHYS to determine stellar and dust masses,
and dust corrected star-formation rates for over 200,000 GAMA galaxies, 170,000
G10-COSMOS galaxies and 200,000 3D-HST galaxies. Our values agree well with
previously reported measurements and constitute a representative and
homogeneous dataset spanning a broad range in stellar mass (10^8---10^12 Msol),
dust mass (10^6---10^9 Msol), and star-formation rates (0.01---100 Msol per
yr), and over a broad redshift range (0.0 < z < 5.0). We combine these data to
measure the cosmic star-formation history (CSFH), the stellar-mass density
(SMD), and the dust-mass density (DMD) over a 12 Gyr timeline. The data mostly
agree with previous estimates, where they exist, and provide a
quasi-homogeneous dataset using consistent mass and star-formation estimators
with consistent underlying assumptions over the full time range. As a
consequence our formal errors are significantly reduced when compared to the
historic literature. Integrating our cosmic star-formation history we precisely
reproduce the stellar-mass density with an ISM replenishment factor of 0.50 +/-
0.07, consistent with our choice of Chabrier IMF plus some modest amount of
stripped stellar mass. Exploring the cosmic dust density evolution, we find a
gradual increase in dust density with lookback time. We build a simple
phenomenological model from the CSFH to account for the dust mass evolution,
and infer two key conclusions: (1) For every unit of stellar mass which is
formed 0.0065---0.004 units of dust mass is also formed; (2) Over the history
of the Universe approximately 90 to 95 per cent of all dust formed has been
destroyed and/or ejected. | | Source: | arXiv, 1710.6628 | | Services: | Forum | Review | PDF | Favorites | |
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