TY - JOUR
T1 - Calibration of ultraviolet, mid-infrared and radio star formation rate indicators
AU - Brown, Michael J. I.
AU - Moustakas, John
AU - Kennicutt, Robert C.
AU - Bonne, Nicolas J.
AU - Intema, Huib T.
AU - Gasperin, Francesco de
AU - Boquien, Mederic
AU - Jarrett, T. H.
AU - Cluver, Michelle E.
AU - Smith, J.-D. T.
AU - Cunha, Elisabete da
AU - Imanishi, Masatoshi
AU - Armus, Lee
AU - Brandl, Bernhard R.
AU - Peek, J. E. G.
PY - 2017/10/3
Y1 - 2017/10/3
N2 - We present calibrations for star formation rate (SFR) indicators in the ultraviolet, mid-infrared, and radio-continuum bands, including one of the first direct calibrations of 150 MHz as an SFR indicator. Our calibrations utilize 66 nearby star-forming galaxies with Balmer-decrement-corrected Hα luminosities, which span five orders of magnitude in SFR and have absolute magnitudes of -24 < Mr < -12. Most of our photometry and spectrophotometry are measured from the same region of each galaxy, and our spectrophotometry has been validated with SDSS photometry, so our random and systematic errors are small relative to the intrinsic scatter seen in SFR indicator calibrations. We find that the Wide-field Infrared Space Explorer W4 (22.8 μm), Spitzer 24 μm, and 1.4 GHz bands have tight correlations with the Balmer-decrement-corrected Hα luminosity, with a scatter of only 0.2 dex. Our calibrations are comparable to those from the prior literature for L ∗ galaxies, but for dwarf galaxies, our calibrations can give SFRs that are far greater than those derived from most previous literature.
AB - We present calibrations for star formation rate (SFR) indicators in the ultraviolet, mid-infrared, and radio-continuum bands, including one of the first direct calibrations of 150 MHz as an SFR indicator. Our calibrations utilize 66 nearby star-forming galaxies with Balmer-decrement-corrected Hα luminosities, which span five orders of magnitude in SFR and have absolute magnitudes of -24 < Mr < -12. Most of our photometry and spectrophotometry are measured from the same region of each galaxy, and our spectrophotometry has been validated with SDSS photometry, so our random and systematic errors are small relative to the intrinsic scatter seen in SFR indicator calibrations. We find that the Wide-field Infrared Space Explorer W4 (22.8 μm), Spitzer 24 μm, and 1.4 GHz bands have tight correlations with the Balmer-decrement-corrected Hα luminosity, with a scatter of only 0.2 dex. Our calibrations are comparable to those from the prior literature for L ∗ galaxies, but for dwarf galaxies, our calibrations can give SFRs that are far greater than those derived from most previous literature.
KW - astro-ph.GA
UR - https://www.repository.cam.ac.uk/handle/1810/267886
U2 - 10.3847/1538-4357/aa8ad2
DO - 10.3847/1538-4357/aa8ad2
M3 - Article
SN - 0004-637X
VL - 847
JO - The Astrophysical Journal
JF - The Astrophysical Journal
M1 - 136
ER -