Calibration of Ultraviolet, Mid-infrared, and Radio Star Formation Rate Indicators

Michael J.I. Brown; John Moustakas; Robert C. Kennicutt; Nicolas J. Bonne; Huib T. Intema; Francesco De Gasperin; Mederic Boquien; T. H. Jarrett; Michelle E. Cluver; J. D.T. Smith; Elisabete Da Cunha; Masatoshi Imanishi; Lee Armus; Bernhard R. Brandl; J. E.G. Peek

doi:10.3847/1538-4357/aa8ad2

Calibration of Ultraviolet, Mid-infrared, and Radio Star Formation Rate Indicators

Michael J.I. Brown, John Moustakas, Robert C. Kennicutt, Nicolas J. Bonne, Huib T. Intema, Francesco De Gasperin, Mederic Boquien, T. H. Jarrett, Michelle E. Cluver, J. D.T. Smith, Elisabete Da Cunha, Masatoshi Imanishi, Lee Armus, Bernhard R. Brandl, J. E.G. Peek

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Abstract

We present calibrations for star formation rate (SFR) indicators in the ultraviolet, mid-infrared, and radiocontinuumbands, including one of the first direct calibrations of 150 MHz as an SFR indicator. Our calibrationsutilize 66 nearby star-forming galaxies with Balmer-decrement-corrected Hα luminosities, which span five ordersof magnitude in SFR and have absolute magnitudes of -24 < Mr < -12. Most of our photometry andspectrophotometry are measured from the same region of each galaxy, and our spectrophotometry has beenvalidated with SDSS photometry, so our random and systematic errors are small relative to the intrinsic scatter seenin 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 ofonly 0.2 dex. Our calibrations are comparable to those from the prior literature for L∗ galaxies, but for dwarfgalaxies, our calibrations can give SFRs that are far greater than those derived from most previous literature.

Original language	English
Article number	136
Journal	Astrophysical Journal
Volume	847
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/aa8ad2
Publication status	Published - 1 Oct 2017

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Brown, M. J. I., Moustakas, J., Kennicutt, R. C., Bonne, N. J., Intema, H. T., De Gasperin, F., Boquien, M., Jarrett, T. H., Cluver, M. E., Smith, J. D. T., Da Cunha, E., Imanishi, M., Armus, L., Brandl, B. R., & Peek, J. E. G. (2017). Calibration of Ultraviolet, Mid-infrared, and Radio Star Formation Rate Indicators. Astrophysical Journal, 847(2), Article 136. https://doi.org/10.3847/1538-4357/aa8ad2

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abstract = "We present calibrations for star formation rate (SFR) indicators in the ultraviolet, mid-infrared, and radiocontinuumbands, including one of the first direct calibrations of 150 MHz as an SFR indicator. Our calibrationsutilize 66 nearby star-forming galaxies with Balmer-decrement-corrected Hα luminosities, which span five ordersof magnitude in SFR and have absolute magnitudes of -24 < Mr < -12. Most of our photometry andspectrophotometry are measured from the same region of each galaxy, and our spectrophotometry has beenvalidated with SDSS photometry, so our random and systematic errors are small relative to the intrinsic scatter seenin 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 ofonly 0.2 dex. Our calibrations are comparable to those from the prior literature for L∗ galaxies, but for dwarfgalaxies, our calibrations can give SFRs that are far greater than those derived from most previous literature.",

keywords = "dust, extinction, galaxies: evolution, galaxies: general, galaxies: photometry, stars: formation, techniques: spectroscopic",

author = "Brown, {Michael J.I.} and John Moustakas and Kennicutt, {Robert C.} and Bonne, {Nicolas J.} and Intema, {Huib T.} and {De Gasperin}, Francesco and Mederic Boquien and Jarrett, {T. H.} and Cluver, {Michelle E.} and Smith, {J. D.T.} and {Da Cunha}, Elisabete and Masatoshi Imanishi and Lee Armus and Brandl, {Bernhard R.} and Peek, {J. E.G.}",

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AU - Moustakas, John

AU - Kennicutt, Robert C.

AU - Bonne, Nicolas J.

AU - Intema, Huib T.

AU - De Gasperin, Francesco

AU - Boquien, Mederic

AU - Jarrett, T. H.

AU - Cluver, Michelle E.

AU - Smith, J. D.T.

AU - Da Cunha, Elisabete

AU - Imanishi, Masatoshi

AU - Armus, Lee

AU - Brandl, Bernhard R.

AU - Peek, J. E.G.

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N2 - We present calibrations for star formation rate (SFR) indicators in the ultraviolet, mid-infrared, and radiocontinuumbands, including one of the first direct calibrations of 150 MHz as an SFR indicator. Our calibrationsutilize 66 nearby star-forming galaxies with Balmer-decrement-corrected Hα luminosities, which span five ordersof magnitude in SFR and have absolute magnitudes of -24 < Mr < -12. Most of our photometry andspectrophotometry are measured from the same region of each galaxy, and our spectrophotometry has beenvalidated with SDSS photometry, so our random and systematic errors are small relative to the intrinsic scatter seenin 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 ofonly 0.2 dex. Our calibrations are comparable to those from the prior literature for L∗ galaxies, but for dwarfgalaxies, 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 radiocontinuumbands, including one of the first direct calibrations of 150 MHz as an SFR indicator. Our calibrationsutilize 66 nearby star-forming galaxies with Balmer-decrement-corrected Hα luminosities, which span five ordersof magnitude in SFR and have absolute magnitudes of -24 < Mr < -12. Most of our photometry andspectrophotometry are measured from the same region of each galaxy, and our spectrophotometry has beenvalidated with SDSS photometry, so our random and systematic errors are small relative to the intrinsic scatter seenin 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 ofonly 0.2 dex. Our calibrations are comparable to those from the prior literature for L∗ galaxies, but for dwarfgalaxies, our calibrations can give SFRs that are far greater than those derived from most previous literature.

KW - dust, extinction

KW - galaxies: evolution

KW - galaxies: general

KW - galaxies: photometry

KW - stars: formation

KW - techniques: spectroscopic

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VL - 847

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 136

ER -

Calibration of Ultraviolet, Mid-infrared, and Radio Star Formation Rate Indicators

Abstract

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