J/ApJS/219/8 SFR for WISE + SDSS spectroscopic galaxies (Chang+, 2015)
Stellar masses and star formation rates for 1M galaxies from SDSS+WISE.
Chang Y.-Y., van der Wel A., da Cunha E., Rix H.-W.
<Astrophys. J. Suppl. Ser., 219, 8 (2015)>
=2015ApJS..219....8C 2015ApJS..219....8C (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, spectra ; Redshifts ; Photometry, infrared ;
Photometry, SDSS ; Energy distributions
Keywords: catalogs; galaxies: star formation; galaxies: statistics;
galaxies: stellar content; infrared: galaxies
Abstract:
We combine Sloan Digitital Sky Survey (SDSS) and WISE photometry for
the full SDSS spectroscopic galaxy sample, creating spectral energy
distributions (SEDs) that cover λ=0.4-22µm for an
unprecedentedly large and comprehensive sample of 858365 present-epoch
galaxies. Using MAGPHYS (da Cunha+ 2008MNRAS.388.1595D 2008MNRAS.388.1595D), we then
simultaneously and consistently model both the attenuated stellar SED
and the dust emission at 12 and 22µm, producing robust new
calibrations for monochromatic mid-IR star formation rate (SFR)
proxies. These modeling results provide the first mid-IR-based view of
the bimodality in star formation activity among galaxies, exhibiting
the sequence of star-forming galaxies ("main sequence") with a slope
of dlogSFR/dlogM*=0.80 and a scatter of 0.39dex. We find that these
new SFRs along the SF main sequence are systematically lower by a
factor of 1.4 than those derived from optical spectroscopy. We show
that for most present-day galaxies, the 0.4-22µm SED fits can
exquisitely predict the fluxes measured by Herschel at much longer
wavelengths. Our analysis also illustrates that the majority of stars
in the present-day universe are formed in luminous galaxies (∼L*) in
and around the "green valley" of the color-luminosity plane. We make
publicly available the matched photometry catalog and SED modeling
results.
Description:
We use the SDSS spectroscopic galaxy sample as compiled in the New
York University Value-added Galaxy Catalog (NYU-VAGC; Blanton+
2005AJ....129.2562B 2005AJ....129.2562B; Adelman-McCarthy+ 2008, II/282, superseded by
II/294; Padmanabhan+ 2008ApJ...674.1217P 2008ApJ...674.1217P), which contains 858365
galaxies with reliable redshift measurements.
The SDSS parent sample is cross-matched with the AllWISE source
catalog (II/328); see section 2 for further explanations.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 578 858365 Input catalog
table2.dat 400 858365 Output catalog
--------------------------------------------------------------------------------
See also:
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
II/328 : AllWISE Data Release (Cutri+ 2013)
J/ApJS/196/11 : Bulge+disk decompositions of SDSS galaxies (Simard+, 2011)
J/MNRAS/415/2336 : Herschel-ATLAS Science Demonstration Catalog (Rigby+, 2011)
J/ApJ/692/556 : Star forming galaxy templates (Rieke+, 2009)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 I7 --- ID [3/2506743] NYU-VAGC catalog index (G1)
9- 22 F14.10 deg RAdeg Right Ascension in decimal degrees (J2000)
24- 37 F14.10 deg DEdeg Declination in decimal degrees (J2000)
39- 51 F13.10 --- z [-0.012/5] NYU-VAGC spectroscopic catalog
redshift (G1)
53- 56 I4 --- Plate SDSS plate from NYU-VAGC
58- 62 I5 d MJD SDSS mjd from NYU-VAGC
64- 66 I3 --- Fiber SDSS fiber id from NYU-VAGC
68- 86 A19 --- WISEA ALLWISE designation (JHHMMSS.ss+DDMMSS.s)
("" for blank values)
88- 98 E11.5 Jy flux0-u [0/0.16] SDSS u-band flux before corrections
100-110 E11.5 Jy e_flux0-u ?=9.99999 Uncertainty in flux0-u
112-122 E11.5 Jy flux0-g [0/0.08] SDSS g-band flux before corrections
124-134 E11.5 Jy e_flux0-g ?=9.99999 Uncertainty in flux0-g
136-146 E11.5 Jy flux0-r [0/0.18] SDSS r-band flux before corrections
148-158 E11.5 Jy e_flux0-r [0/0.0017] Uncertainty in flux0-r
160-170 E11.5 Jy flux0-i [0/0.27] SDSS i-band flux before corrections
172-182 E11.5 Jy e_flux0-i ?=9.99999 Uncertainty in flux0-i
184-194 E11.5 Jy flux0-z [0/0.41] SDSS z-band flux before corrections
196-206 E11.5 Jy e_flux0-z ?=9.99999 Uncertainty in flux0-z
208-218 E11.5 Jy flux0-w1 ?=9.99999 WISE/W1-band (3.4um) flux
before corrections
220-230 E11.5 Jy e_flux0-w1 ?=9.99999 Uncertainty in flux0-w1
232-242 E11.5 Jy flux0-w2 ?=9.99999 WISE/W2-band (4.6um) flux
before corrections
244-254 E11.5 Jy e_flux0-w2 ?=9.99999 Uncertainty in flux0-w2
256-266 E11.5 Jy flux0-w3 ?=9.99999 WISE/W3-band (12um) flux
before corrections
268-278 E11.5 Jy e_flux0-w3 ?=9.99999 Uncertainty in flux0-w3
280-290 E11.5 Jy flux0-w4 [0.0006/79] WISE/W4-band (22um) flux before
corrections
292-302 E11.5 Jy e_flux0-w4 ?=9.99999 Uncertainty in flux0-w4
304-314 E11.5 Jy flux-u [0/0.2] SDSS u-band flux after corrections
316-326 E11.5 Jy e_flux-u [0/0.014] Uncertainty in flux-u
328-338 E11.5 Jy flux-g [0/0.11] SDSS g-band flux after corrections
340-350 E11.5 Jy e_flux-g [0/0.006] Uncertainty in flux-g
352-362 E11.5 Jy flux-r [0/0.23] SDSS r-band flux after corrections
364-374 E11.5 Jy e_flux-r [0/0.012] Uncertainty in flux-r
376-386 E11.5 Jy flux-i [0/0.34] SDSS i-band flux after corrections
388-398 E11.5 Jy e_flux-i [0/0.017] Uncertainty in flux-i
400-410 E11.5 Jy flux-z [0/0.47] SDSS z-band flux after corrections
412-422 E11.5 Jy e_flux-z [0/0.024] Uncertainty in flux-z
424-434 E11.5 Jy flux-w1 ?=9.99999 WISE/W1-band flux after corrections
436-446 E11.5 Jy e_flux-w1 ?=9.99999 Uncertainty in flux-w1
448-458 E11.5 Jy flux-w2 ?=9.99999 WISE/W2-band flux after corrections
460-470 E11.5 Jy e_flux-w2 ?=9.99999 Uncertainty in flux-w2
472-482 E11.5 Jy flux-w3 ?=9.99999 WISE/W3-band flux after corrections
484-494 E11.5 Jy e_flux-w3 ?=9.99999 Uncertainty in flux-w3
496-506 E11.5 Jy flux-w4 [0/13] WISE/W4-band flux after corrections
508-518 E11.5 Jy e_flux-w4 ?=9.99999 Uncertainty in flux-w4
520-530 E11.5 mag extin-u [0.01/5.7] Galactic extinction correction
for u-band
532-542 E11.5 mag extin-g [0.009/4.5] Galactic extinction correction
for g-band
544-554 E11.5 mag extin-r [0.006/3.1] Galactic extinction correction
for r-band
556-566 E11.5 mag extin-i [0.005/2.3] Galactic extinction correction
for i-band
568-578 E11.5 mag extin-z [0.003/1.7] Galactic extinction correction
for z-band
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 I7 --- ID [3/2506743] NYU-VAGC catalog index (G1)
9- 14 F6.2 [Msun] lmass2.5 ?=-99.99 log stellar mass; 2.5th percentile
16- 21 F6.2 [Msun] lmass16 ?=-99.99 log stellar mass; 16th percentile
23- 28 F6.2 [Msun] lmass50 ?=-99.99 log stellar mass; 50th percentile
30- 35 F6.2 [Msun] lmass84 ?=-99.99 log stellar mass; 84th percentile
37- 42 F6.2 [Msun] lmass97.5 [7/13]?=-99.99 log stellar mass;
97.5th percentile
44- 50 F7.3 [Msun/yr] lsfr2.5 ?=-99.99 log SFR; 2.5th percentile
52- 58 F7.3 [Msun/yr] lsfr16 ?=-99.99 log SFR; 16th percentile
60- 66 F7.3 [Msun/yr] lsfr50 ?=-99.99 log SFR; 50th percentile
68- 74 F7.3 [Msun/yr] lsfr84 ?=-99.99 log SFR; 84th percentile
76- 82 F7.3 [Msun/yr] lsfr97.5 [-5/3]?=-99.99 log SFR; 97.5th percentile
84- 89 F6.2 [1/yr] lssfr2.5 ?=-99.99 log specific SFR; 2.5th percentile
91- 96 F6.2 [1/yr] lssfr16 ?=-99.99 log specific SFR; 16th percentile
98-103 F6.2 [1/yr] lssfr50 ?=-99.99 log specific SFR; 50th percentile
105-110 F6.2 [1/yr] lssfr84 ?=-99.99 log specific SFR; 84th percentile
112-117 F6.2 [1/yr] lssfr97.5 [-18/-7]?=-99.99 log specific SFR;
97.5th percentile
119-125 F7.3 [Lsun] lDust2.5 ?=-99.99 log Dust luminosity;
2.5th percentile
127-133 F7.3 [Lsun] lDust16 ?=-99.99 log Dust luminosity;
16th percentile
135-141 F7.3 [Lsun] lDust50 ?=-99.99 log Dust luminosity;
50th percentile
143-149 F7.3 [Lsun] lDust84 ?=-99.99 log Dust luminosity;
84th percentile
151-157 F7.3 [Lsun] lDust97.5 [7/13]?=-99.99 log Dust luminosity;
97.5th percentile
159-165 F7.3 --- mu2.5 ?=-99.99 Dust attenuation parameter; 2.5th
percentile (2)
167-173 F7.3 --- mu16 ?=-99.99 Dust attenuation parameter; 16th
percentile (2)
175-181 F7.3 --- mu50 ?=-99.99 Dust attenuation parameter; 50th
percentile (2)
183-189 F7.3 --- mu84 ?=-99.99 Dust attenuation parameter; 84th
percentile (2)
191-197 F7.3 --- mu97.5 ?=-99.99 Dust attenuation parameter; 97.5th
percentile (2)
199-205 F7.3 --- tauv2.5 ?=-99.99 Dust attenuation parameter; 2.5th
percentile (2)
207-213 F7.3 --- tauv16 ?=-99.99 Dust attenuation parameter; 16th
percentile (2)
215-221 F7.3 --- tauv50 ?=-99.99 Dust attenuation parameter; 50th
percentile (2)
223-229 F7.3 --- tauv84 ?=-99.99 Dust attenuation parameter; 84th
percentile (2)
231-237 F7.3 --- tauv97.5 [0.002/6]?=-99.99 Dust attenuation
parameter; 97.5th percentile (2)
239-249 E11.6 Mpc3 vmax ?=-99.99 Maximum volume for LMASS_50
251-264 F14.10 [Lsun] lrest-u [-10.6/13.5]?=-99.99 Rest-frame u-band
Luminosity
266-279 F14.10 [Lsun] lrest-g [-11.2/14.3]?=-99.99 Rest-frame g-band
Luminosity
281-294 F14.10 [Lsun] lrest-r [-11.9/13.7]?=-99.99 Rest-frame r-band
Luminosity
296-309 F14.10 [Lsun] lrest-i [-8.8/15.1]?=-99.99 Rest-frame i-band
Luminosity
311-324 F14.10 [Lsun] lrest-z [-7.5/17.6]?=-99.99 Rest-frame z-band
Luminosity
326-339 F14.10 [Lsun] lrest-w1 [-7.2/12.4]?=-99.99 Rest-frame W1-band
Luminosity
341-354 F14.10 [Lsun] lrest-w2 [-7.5/12]?=-99.99 Rest-frame W2-band
Luminosity
356-369 F14.10 [Lsun] lrest-w3 [-7.5/12.5]?=-99.99 Rest-frame W3-band
Luminosity
371-384 F14.10 [Lsun] lrest-w4 [-6.5/16.4]?=-99.99 Rest-frame W4-band
Luminosity
386 I1 --- flagR [0/3]? Radius flag (3)
388 I1 --- flagW [0/2]? WISE flag (1 = single match) (4)
390 I1 --- flagW1 [0/2]? WISE W1 filter detection flag (5)
392 I1 --- flagW2 [0/2]? WISE W2 filter detection flag (5)
394 I1 --- flagW3 [0/2]? WISE W3 filter detection flag (5)
396 I1 --- flagW4 [0/2]? WISE W4 filter detection flag (5)
398 I1 --- flagChi2 [0/1]? Best-fit model flag (1=chi2<3) (6)
400 I1 --- flag [0/1]? Flag (1=good fit) (7)
--------------------------------------------------------------------------------
Note (2): In da Cunha et al. (2008MNRAS.388.1595D 2008MNRAS.388.1595D).
Note (3): Flag as follows:
1 = Simard radius;
2 = deVaucouleurs radius;
3 = exponential radius;
0 = no radius
Note (4): Flag as follows:
1 = single optical matched in WISE;
2 = >1 counterparts within 6";
0 = not matched.
Note (5): Flag as follows:
1 = detected (SNR>2);
2 = upper limit on filter detection;
0 = no data in this filter.
Note (6): Flag as follows:
1 = chi2 < 3 for best-fit model;
0 = chi2 > 3 for best-fit model.
Note (7): We recommend to use the MAGPHYS modeling results for objects with
flag=1 (633205 out of 858365). These are all z<0.2 galaxies with
reliable aperture corrections based on size measurements from
Simard et al. (2011, J/ApJS/196/11), good WISE photometry
(FLAG_W?=1 or 2), and good-quality SED fits (FLAG_CHI2=1).
1 = good fit (flag-r=1; flag-w?=1 or 2; flag-chi2=1; z<0:2);
0 = others.
--------------------------------------------------------------------------------
Global note:
Note (G1): There are all 858365 galaxies from the SDSS spectroscopic galaxy
sample with good redshift measurements (NYU-VAGC catalog:
OBJTYPE=GALAXY, Zwarning=0).
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 02-Sep-2015