The ALMA Spectroscopic Survey Large Program: The Infrared Excess ofz=1.5-10 UV-selected Galaxies and the Implied High-redshift Star Formation History
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The ALMA Spectroscopic Survey Large Program : The Infrared Excess ofz=1.5-10 UV-selected Galaxies and the Implied High-redshift Star Formation History. / Bouwens, Rychard; Gonzalez-Lopez, Jorge; Aravena, Manuel; Decarli, Roberto; Novak, Mladen; Stefanon, Mauro; Walter, Fabian; Boogaard, Leindert; Carilli, Chris; Dudzeviciute, Ugne; Smail, Ian; Daddi, Emanuele; da Cunha, Elisabete; Ivison, Rob; Nanayakkara, Themiya; Cortes, Paulo; Cox, Pierre; Inami, Hanae; Oesch, Pascal; Popping, Gergoe; Riechers, Dominik; van der Werf, Paul; Weiss, Axel; Fudamoto, Yoshi; Wagg, Jeff.
In: Astrophysical Journal, Vol. 902, No. 2, 112, 19.10.2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The ALMA Spectroscopic Survey Large Program
T2 - The Infrared Excess ofz=1.5-10 UV-selected Galaxies and the Implied High-redshift Star Formation History
AU - Bouwens, Rychard
AU - Gonzalez-Lopez, Jorge
AU - Aravena, Manuel
AU - Decarli, Roberto
AU - Novak, Mladen
AU - Stefanon, Mauro
AU - Walter, Fabian
AU - Boogaard, Leindert
AU - Carilli, Chris
AU - Dudzeviciute, Ugne
AU - Smail, Ian
AU - Daddi, Emanuele
AU - da Cunha, Elisabete
AU - Ivison, Rob
AU - Nanayakkara, Themiya
AU - Cortes, Paulo
AU - Cox, Pierre
AU - Inami, Hanae
AU - Oesch, Pascal
AU - Popping, Gergoe
AU - Riechers, Dominik
AU - van der Werf, Paul
AU - Weiss, Axel
AU - Fudamoto, Yoshi
AU - Wagg, Jeff
PY - 2020/10/19
Y1 - 2020/10/19
N2 - We make use of sensitive (9.3 mu Jy beam(-1) rms) 1.2 mm continuum observations from the Atacama Large Millimeter/submillimeter Array (ALMA) Spectroscopic Survey in the Hubble Ultra-Deep Field (ASPECS) large program to probe dust-enshrouded star formation from 1362 Lyman-break galaxies spanning the redshift range z.=.1.5-10 (to similar to 7-28 M-circle dot yr(-1) at 4s over the entire range). We find that the fraction of ALMA-detected galaxies in our z.=.1.5-10 samples increases steeply with stellar mass, with the detection fraction rising from 0% at 10(9.0) M-circle dot to 85(-18)(+9) % at >10(10) M-circle dot. Moreover, on stacking all 1253 low-mass (10(9.5) M-circle dot and an SMC-like relation at lower masses. Using stellar mass and beta measurements for z similar to 2 galaxies over the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, we derive a new empirical relation between beta and stellar mass and then use this correlation to show that our IRX-beta and IRX-stellar mass relations are consistent with each other. We then use these constraints to express the IRX as a bivariate function of beta and stellar mass. Finally, we present updated estimates of star formation rate density determinations at z > 3, leveraging present improvements in the measured IRX and recent probes of ultraluminous far-IR galaxies at z > 2.
AB - We make use of sensitive (9.3 mu Jy beam(-1) rms) 1.2 mm continuum observations from the Atacama Large Millimeter/submillimeter Array (ALMA) Spectroscopic Survey in the Hubble Ultra-Deep Field (ASPECS) large program to probe dust-enshrouded star formation from 1362 Lyman-break galaxies spanning the redshift range z.=.1.5-10 (to similar to 7-28 M-circle dot yr(-1) at 4s over the entire range). We find that the fraction of ALMA-detected galaxies in our z.=.1.5-10 samples increases steeply with stellar mass, with the detection fraction rising from 0% at 10(9.0) M-circle dot to 85(-18)(+9) % at >10(10) M-circle dot. Moreover, on stacking all 1253 low-mass (10(9.5) M-circle dot and an SMC-like relation at lower masses. Using stellar mass and beta measurements for z similar to 2 galaxies over the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, we derive a new empirical relation between beta and stellar mass and then use this correlation to show that our IRX-beta and IRX-stellar mass relations are consistent with each other. We then use these constraints to express the IRX as a bivariate function of beta and stellar mass. Finally, we present updated estimates of star formation rate density determinations at z > 3, leveraging present improvements in the measured IRX and recent probes of ultraluminous far-IR galaxies at z > 2.
KW - Lyman-break galaxies
KW - Infrared excess
KW - High-redshift galaxies
KW - Dust continuum emission
KW - Far infrared astronomy
KW - ULTRA-DEEP FIELD
KW - ULTRAVIOLET LUMINOSITY DENSITY
KW - SPECTRAL ENERGY-DISTRIBUTIONS
KW - LYMAN-BREAK GALAXIES
KW - STELLAR MASS DENSITY
KW - SIMILAR-TO 2
KW - FORMING GALAXIES
KW - DUST ATTENUATION
KW - H-ALPHA
KW - SUBMILLIMETER GALAXIES
U2 - 10.3847/1538-4357/abb830
DO - 10.3847/1538-4357/abb830
M3 - Journal article
VL - 902
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 112
ER -
ID: 253190624