Abstract
The observed empirical relation between the star formation rates (SFR)
of low-redshift galaxies and their radio continuum luminosity offers a
potential means of measuring SFR in high-redshift galaxies that is
unaffected by dust obscuration. In this study, we make the first test
for redshift evolution in the SFR-radio continuum relation at high
redshift using dust-corrected H α SFR. Our sample consists of 178
galaxies from the MOSFIRE Deep Evolution Field (MOSDEF) Survey at 1.4
< z < 2.6 with rest-frame optical spectroscopy and deep
1.5 GHz radio continuum observations from the Karl G. Jansky Very Large
Array (VLA) GOODS North field. Using a stacking analysis, we compare the
observed radio continuum luminosities with those predicted from the
dust-corrected H α SFR assuming a range of z ∼ 0 relations. We
find no evidence for a systematic evolution with redshift, when stacking
the radio continuum as a function of dust-corrected H α SFR and when
stacking both optical spectroscopy and radio continuum as a function of
stellar mass. We conclude that locally calibrated relations between SFR
and radio continuum luminosity remain valid out to z ∼ 2.
Original language | English |
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Pages (from-to) | 3648-3657 |
Number of pages | 10 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 498 |
Issue number | 3 |
Early online date | 22 Aug 2020 |
DOIs | |
Publication status | Published - 1 Nov 2020 |
Keywords / Materials (for Non-textual outputs)
- astro-ph.GA