J/MNRAS/441/2 Herschel far-IR counterparts of SDSS galaxies (Dominguez+, 2014)
Herschel far-IR counterparts of SDSS galaxies:
analysis of commonly used star formation rate estimates.
Dominguez Sanchez H., Bongiovanni A., Lara-Lopez M.A., Oteo I., Cepa J.,
Perez Garcia A.M., Sanchez-Portal M., Ederoclite A., Lutz D., Cresci G.,
Delvecchio I., Berta S., Magnelli B., Popesso P., Pozzi F., Riguccini L.
<Mon. Not. R. Astron. Soc., 441, 2-23 (2014)>
=2014MNRAS.441....2D 2014MNRAS.441....2D
ADC_Keywords: Galaxy catalogs ; Galaxies, IR ; Ultraviolet
Keywords: galaxies: fundamental parameters - galaxies: star formation -
infrared: galaxies
Abstract:
We study a hundred of galaxies from the spectroscopic Sloan Digital
Sky Survey (SDSS) with individual detections in the far-infrared
Herschel Photodetector Array Camera and Spectrometer bands (100 or
160um) and in the GALEX far-ultraviolet band up to z∼0.4 in the COSMOS
and Lockman Hole fields. The galaxies are divided into four spectral
and four morphological types. For the star-forming and unclassifiable
galaxies, we calculate dust extinctions from the ultraviolet (UV)
slope, the Hα/Hβ ratio and the LIR/LUV ratio. There is
a tight correlation between the dust extinction and both LIR and
metallicity. We calculate SFRtotal and compare it with other star
formation rate (SFR) estimates (Hα, UV, SDSS) finding very good
agreement between them with smaller dispersions than typical SFR
uncertainties. We study the effect of mass and metallicity, finding
that it is only significant at high masses for SFRHα. For the
AGN and composite galaxies, we find a tight correlation between SFR
and LIR(σ∼0.29), while the dispersion in the SFR-LUV
relation is larger (σ∼0.57). The galaxies follow the
prescriptions of the Fundamental Plane in the M-Z-SFR space.
Description:
In this paper, we present results for galaxies from the SDSS-DR7, with
a counterpart from the PEP (Lutz et al., 2011, Cat. J/A+A/532/A90)
Herschel survey in two different fields: the COSMOS field (Scoville et
al. 2007ApJS..172....1S 2007ApJS..172....1S) and the Lockman Hole (LH hereafter; Lockman,
Jahoda & McCammon 1986ApJ...302..432L 1986ApJ...302..432L).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tabled.dat 224 123 Properties of SDSS-DR7/POP galaxies
--------------------------------------------------------------------------------
See also:
J/A+A/532/A90 : PACS Evolutionary Probe (PEP-DR1) catalogs (Lutz+, 2011)
J/A+A/525/A157 : SDSS automated morphology classification
(Huertas-Company+, 2011)
Byte-by-byte Description of file: tabled.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- ID [108993/313793] Identification number (1)
8- 18 F11.7 deg RAdeg Right ascension (J2000)
20- 30 F11.7 deg DEdeg Declination (J2000)
32- 35 F4.2 --- z [0.01/0.34] Redshift
37- 38 I2 --- Class [-1/5] Spectral class (2)
40- 44 F5.2 [Msun] logM Stellar mass
46- 50 F5.2 [Msun/yr] logSFR Star formation rate
52- 57 F6.2 [-] Z [8.46/9.26]?=-99.9 Metallicity Z=12+log(O/H)
59- 63 F5.2 [Lsun] logLIR Infrared luminosity
65- 68 F4.2 arcsec sep1 [0/3] Separation SDSS-PEP (J/A+A/532/A90)
70- 75 F6.3 --- pE [0/1]?=-1 Probability of E morphology (3)
77- 82 F6.3 --- pS0 [0/1]?=-1 Probability of S0 morphology (3)
84- 89 F6.3 --- pSab [0/1]?=-1 Probability of Sab morphology (3)
91- 96 F6.3 --- pScd [0/1]?=-1 Probability of Scd morphology (3)
98-103 F6.3 arcsec sep2 [0/2]?=-1 Separation SDSS-Morphology
(J/A+A/525/A157)
105-111 F7.2 uJy FNUV ?=-999 NUV flux from GALEX DIS DR6/7
113-119 F7.2 uJy e_FNUV ?=-999 rms uncertainty on FNUV
121-127 F7.2 uJy FFUV ?=-999 FUV flux from GALEX DIS DR6/7
129-135 F7.2 uJy e_FFUV ?=-999 rms uncertainty on FFUV
137-141 F5.2 arcsec sep3 [0/4]?=-1 Separation GALEX-SDSS
143-149 F7.2 10-20W/m2 FHa Hα flux from SDSS DR7
(in 10-17erg/s/cm2)
151-156 F6.2 10-20W/m2 e_FHa rms uncertainty on FHa
158-163 F6.2 10-20W/m2 FHb Hβ flux from SDSS DR7
(in 10-17erg/s/cm2)
165-170 F6.3 10-20W/m2 e_FHb rms uncertainty on FHb
172-175 F4.2 --- ApCor [0/1.7] Aperture correction from Salim
et al. (2007ApJS..172...86S 2007ApJS..172...86S)
177-182 F6.2 [Msun/yr] logSFR1 Star formation rate derived from
IR luminosity
184-189 F6.2 [Msun/yr] logSFR2 Star formation rate derived from
Hα luminosity (4)
191-196 F6.2 [Msun/yr] logSFR3 Star formation rate derived from
UV luminosity (5)
198-203 F6.2 [Msun/yr] logSFR4 Extinction uncorrected star formation
rate derived from UV luminosity (6)
205-210 F6.2 mag E(B-V)1 ?=-99 Redenning from IRX=LIR/LUV
(Hao et al., 2011ApJ...741..124H 2011ApJ...741..124H)
212-217 F6.2 mag E(B-V)2 ?=-99 Redenning from R=Ha/Hb
219-224 F6.2 mag E(B-V)3 ?=-99 Redenning from β=UV slope
(Takeuchi et al., 2012ApJ...755..144T 2012ApJ...755..144T)
--------------------------------------------------------------------------------
Note (1): Integer number stating at 1 from dr7-v5-2 catalogs,
i.e., 1st galaxy ID=1, 2nd ID=2, etc.
Note (2): Spectral class from SDSS-DR7 (MPA-JHU) as follows:
-1 = Unclassified
1 = high S/N SF
2 = low S/N SF
3 = composite
4 = AGN
5 = low S/N AGN
Note (3): Huertas-Company et al., 2011A&A...525A.157H 2011A&A...525A.157H, Cat. J/A+A/525/A157
Note (4): Kroupa IMF, extinction corrected with E(B-V)2 (Ha/Hb ratio)
Note (5): Kroupa IMF, extinction corrected with E(B-V)3 (UV slope β)
Note (6): Kroupa IMF, uncorrected by extinction.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 30-Jan-2015