J/MNRAS/482/560 Star formation in nearby galaxies (Mahajan+, 2019)
The Star Formation Reference Survey.
III. A multiwavelength view of star formation in nearby galaxies.
Mahajan S., Ashby M.L.N., Willner S.P., Barmby P., Fazio G.G.,
Maragkoudakis A., Raychaudhury S., Zezas A.
<Mon. Not. R. Astron. Soc., 482, 560-577 (2019)>
=2019MNRAS.482..560M 2019MNRAS.482..560M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, nearby ; Galaxies, photometry ; Photometry, ultraviolet
Keywords: galaxies: star formation - infrared: galaxies -
radio continuum: galaxies - ultraviolet: galaxies
Abstract:
We present multiwavelength global star formation rate (SFR) estimates
for 326 galaxies from the Star Formation Reference Survey in order to
determine the mutual scatter and range of validity of different
indicators. The widely used empirical SFR recipes based on 1.4GHz
continuum, 8.0um polycyclic aromatic hydrocarbons (PAHs), and a
combination of far-infrared (FIR) plus ultraviolet (UV) emission are
mutually consistent with scatter of ≲0.3dex. The scatter is even
smaller, ≲0.24dex, in the intermediate luminosity range
9.3<log(L60um/L☉)<10.7. The data prefer a non-linear relation
between 1.4GHz luminosity and other SFR measures. PAH luminosity
underestimates SFR for galaxies with strong UV emission. A bolometric
extinction correction to far-UV luminosity yields SFR within 0.2dex
of the total SFR estimate, but extinction corrections based on UV
spectral slope or nuclear Balmer decrement give SFRs that may differ
from the total SFR by up to 2dex. However, for the minority of
galaxies with UV luminosity >5x109L☉ or with implied far-UV
extinction <1mag, the UV spectral slope gives extinction corrections
with 0.22dex uncertainty.
Description:
The primary purpose of this work is to present GALEX UV photometry for
SFRS galaxies. By combining GALEX photometry with photometry at other
wavelengths, we test and mutually calibrate widely used empirical
formulas to calculate global SFRs for galaxies using tracers spanning
all available wavelengths.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 66 326 GALEX data for SFRS galaxies
table2.dat 45 326 SFR measures for SFRS galaxies
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See also:
J/PASP/123/1011 : Star Formation Reference Survey (SFRS) (Ashby+, 2011)
J/MNRAS/504/3831 : Stellar mass distribution of local star-forming galaxies
(Bonfini+, 2021)
J/MNRAS/506/3079 : Halpha and other SFR indicators (Kouroumpatzakis+, 2021)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- SFRS Galaxy ID from Paper I (G1)
6- 25 A20 --- Name Galaxy name
27- 31 F5.1 Mpc Dist Galaxy distance from Paper I (G1)
34- 39 F6.3 mag FUV Galex FUV magnitude (AB)
41- 45 F5.3 mag e_FUV FUV magnitude statistical uncertainty
48- 53 F6.3 mag NUV Galex NUV magnitude (AB)
55- 59 F5.3 mag e_NUV NUV magnitude statistical uncertainty
62- 66 F5.3 mag E(B-V) Milky Way colour excess (2)
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Note (2): Milky Way colour excess from Schlegel, Finkbeiner & Davis,
1998ApJ...500..525S 1998ApJ...500..525S
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- SFRS Galaxy ID from Paper I (G1)
5- 9 F5.2 [Msun/yr] logSFRFUV log SFR from FUV luminosity (2)
11- 15 F5.2 [Msun/yr] logSFRNUV log SFR from NUV luminosity (2)
17- 21 F5.2 [Msun/yr] logSFR1.4GHzl log SFR from 1.4GHz linear relation (2)
23- 27 F5.2 [Msun/yr] logSFR1.4GHznl log SFR from 1.4GHz non-linear
relation (2)
29- 33 F5.2 [Msun/yr] logSFRFIR log SFR from FIR luminosity (2)
35- 39 F5.2 [Msun/yr] logSFRPAH log SFR from PAH luminosity (2)
41- 45 F5.2 [Msun/yr] logSFRtot log SFR from combined FIR and FUV (2)
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Note (2): based on Salpeter IMF.
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Global notes:
Note (G1): Paper I = Ashby, Mahajan, Smith, et al., 2011PASP..123.1011A 2011PASP..123.1011A,
Cat. J/PASP/123/1011
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History:
From electronic version of the journal
References:
Ashby et al., Paper I 2011PASP..123.1011A 2011PASP..123.1011A, Cat. J/PASP/123/1011
Maragkoudakis et al., Paper II 2018MNRAS.475.1485M 2018MNRAS.475.1485M
Bonfini et al., Paper IV 2021MNRAS.504.3831B 2021MNRAS.504.3831B, Cat. J/MNRAS/504/3831
Kouroumpatzakis et al., Paper V 2021MNRAS.506.3079K 2021MNRAS.506.3079K, Cat. J/MNRAS/506/3079
(End) Patricia Vannier [CDS] 18-Jan-2022