J/ApJS/243/15 WERGS. II. SED fitting with optical, IR & radio data (Toba+, 2019)
A Wide and deep Exploration of Radio Galaxies with Subaru HSC (WERGS).
II. Physical properties derived from the SED fitting with optical, infrared,
and radio data.
Toba Y., Yamashita T., Nagao T., Wang W.-H., Ueda Y., Ichikawa K.,
Kawaguchi T., Akiyama M., Hsieh B.-C., Kajisawa M., Lee C.-H., Matsuoka Y.,
Noboriguchi A., Onoue M., Schramm M., Tanaka M., Komiyama Y.
<Astrophys. J. Suppl. Ser., 243, 15-15 (2019)>
=2019ApJS..243...15T 2019ApJS..243...15T (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, radio; Redshifts; Photometry, ugriz;
Photometry, infrared; Extinction; Energy distributions
Keywords: catalogs; infrared: galaxies; methods: observational
methods: statistical; radio continuum: galaxies
Abstract:
We present physical properties of radio galaxies (RGs) with
f1.4GHz>1mJy discovered by Subaru Hyper Suprime-Cam (HSC) and Very
Large Array Faint Images of the Radio Sky at Twenty-Centimeters
(FIRST) survey. For 1056 FIRST RGs at 0<z≤1.7 with HSC counterparts
in about 100deg2, we compiled multi-wavelength data of optical,
near-infrared (IR), mid-IR, far-IR, and radio (150MHz). We derived
their color excess (E(B-V)*), stellar mass, star formation rate
(SFR), IR luminosity, the ratio of IR and radio luminosity (qIR),
and radio spectral index (αradio) that are derived from the
spectral energy distribution (SED) fitting with CIGALE. We also
estimated Eddington ratio based on stellar mass and integration of the
best-fit SEDs of active galactic nucleus (AGN) component. We found
that E(B-V)*, SFR, and IR luminosity clearly depend on redshift
while stellar mass, qIR, and αradio do not significantly
depend on redshift. Since optically faint (iAB≥21.3) RGs that are
newly discovered by our RG survey tend to be high redshift, they tend
to not only have a large dust extinction and low stellar mass but also
have high SFR and AGN luminosity, high IR luminosity, and high
Eddington ratio compared with optically bright ones. The physical
properties of a fraction of RGs in our sample seem to differ from a
classical view of RGs with massive stellar mass, low SFR, and low
Eddington ratio, demonstrating that our RG survey with HSC and FIRST
provides us curious RGs among entire RG population.
Description:
The original sample was drawn from 3579 radio galaxies (RGs) and
quasars in Paper I (Yamashita+ 2018ApJ...866..140Y 2018ApJ...866..140Y), who used the
Hyper Suprime-Cam Subaru Strategic Program survey (HSC-SSP;
Aihara+ 2018PASJ...70S...8A 2018PASJ...70S...8A) and FIRST (Helfand+ 2015, VIII/92) data.
We utilized the HSC-SSP broadband forced photometry catalogs of the
early data products internally released as S16A, which were obtained
by observations from 2014 March to 2016 January.
The u-band data were taken from the Kilo-Degree Survey (KiDS) DR3 (de
Jong+, 2017, II/347), which is an ESO public survey carried out with
the VLT Survey Telescope (VST) and OmegaCAM camera.
We compiled J, H and Ks-band data from the VISTA Kilo-degree Infrared
Galaxy Survey (VIKING) DR3 (see II/343).
We utilized W1 (3.4um), W2 (4.6um), W3 (12um), and W4 (22um) data
in ALLWISE (Cutri+ 2014, II/328).
We also used FIR data from Heschel/PACS at 100 and 160um and SPIRE at
250, 350, and 500um. We used H-ATLAS DR1 (Valiante+ 2016, J/MNRAS/462/3146)
containing 120230 sources in the galaxy and mass assembly (GAMA) fields.
The radio data were taken from observations with the Giant Metrewave
Radio Telescope (GMRT). We used continuum flux density at 150MHz
(∼1.99 m) provided by the Tata Institute of Fundamental Research
(TIFR) GMRT Sky Survey (TGSS) alternative data release (ADR;
Intema+ 2017, J/A+A/598/A78).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 792 1056 Subaru Hyper Suprime-Cam (HSC)-FIRST radio
galaxy (RG) catalog
table4.dat 50 5160672 Best-fit SED template of each HSC-FIRST RG
--------------------------------------------------------------------------------
See also:
II/328 : AllWISE Data Release (Cutri+ 2013)
VIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
II/347 : KiDS-ESO-DR3 multi-band source catalog (de Jong+, 2017)
J/ApJ/554/803 : New VLA Sky Survey (NVSS) Cat of IRAS 2Jy Gal. (Yun+ 2001)
J/ApJ/586/794 : Multiwavelength luminosities of galaxies (Bell, 2003)
J/AJ/127/2002 : Star Formation Rate of NFGS galaxies (Kewley+, 2004)
J/MNRAS/362/9 : Radio-loud AGN in SDSS (Best+, 2005)
J/ApJ/699/L43 : FIRST-NVSS-SDSS AGN sample catalog (Smolcic+, 2009)
J/MNRAS/401/1429 : WiggleZ dark energy survey (DR1) (Drinkwater+, 2010)
J/MNRAS/406/197 : Ultra-steep sp. radio sources in SDSS (Bornancini+, 2010)
J/MNRAS/409/L13 : Herschel-SPIRE radio galaxies (Chapman+, 2010)
J/MNRAS/413/971 : Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)
J/ApJ/737/45 : Var. 1.4GHz radio sources from NVSS & FIRST (Ofek+, 2011)
J/MNRAS/421/1569 : Properties of 18286 SDSS radio galaxies (Best+, 2012)
J/AJ/144/11 : IR imaging, nuclear SEDs, IR sp. of 22 AGNs (Mason+, 2012)
J/MNRAS/438/1149 : WISE data for radio-loud AGN samples (Gurkan+, 2014)
J/ApJ/788/45 : Luminosity & redshift of gal. from WISE/SDSS (Toba+, 2014)
J/MNRAS/449/3191 : IR photometry of nearby RLGs (Yang+, 2015)
J/A+A/581/A33 : Nearby radio gal. FUV to MIR properties (De Ruiter+, 2015)
J/MNRAS/452/2087 : Galaxy And Mass Assembly (GAMA): DR2 (Liske+, 2015)
J/MNRAS/453/1079 : Sub-mJy radio sources SF properties (Bonzini+, 2015)
J/ApJ/813/82 : z<0.06 broad-line AGN emission-line data (Reines+, 2015)
J/ApJ/817/118 : SFR-M* relation from ZFOURGE (Tomczak+, 2016)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/MNRAS/462/3146 : Herschel-ATLAS DR1 (HATLAS) (Valiante+, 2016)
J/ApJ/835/74 : IR phot. of AGNs in Swift/BAT 70mth cat. (Ichikawa+, 2017)
J/A+A/598/A49 : FRICAT. FIRST cat. of FR I radio galaxies (Capetti+, 2017)
J/A+A/598/A78 : The GMRT 150MHz all-sky radio survey (TGSS) (Intema+, 2017)
J/A+A/601/A81 : FIRST catalog of FR II radio galaxies (Capetti+, 2017)
J/ApJ/840/21 : FIR data of IR-bright dust-obscured galaxies (Toba+, 2017)
J/A+A/602/A1 : VLA-COSMOS 3 GHz Large Project (Smolcic+, 2017)
J/A+A/602/A2 : VLA-COSMOS 3 GHz Large Project. II. (Smolcic+, 2017)
J/ApJS/230/20 : Machine learning technique to classify gal. (Aniyan+, 2017)
J/ApJ/850/140 : SDSS spectral analysis of IR-bright DOGs (Toba+, 2017)
J/MNRAS/480/707 : Stripe 82 1-2 GHz VLA Snapshot Survey (Prescott+, 2018)
J/A+A/622/A103 : Python Code Investigating GALaxy Emission (Boquien+, 2019)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 I17 --- ID Unique identifier
19- 34 A16 --- FIRST FIRST identifier (JHHMMSS.s+DDMMSS)
36- 42 F7.3 deg RAdeg HSC S16A wide catalog Right
Ascension (J2000)
44- 54 F11.8 deg DEdeg HSC S16A wide catalog
Declination (J2000)
56- 62 F7.5 --- z [0.0028/1.7] Redshift
64- 74 A11 --- r_z Reference for z (1)
76- 82 F7.4 mag umag [19/25]? KiDS DR3 u band AB magnitude
84- 89 F6.4 mag e_umag [0.008/0.4]? Uncertainty in umag
91- 97 F7.4 mag gmag [18.4/27.4] HSC S16A g band AB magnitude
99-104 F6.4 mag e_gmag [0.0006/0.4]? Uncertainty in gmag
106-112 F7.4 mag rmag HSC S16A r band AB magnitude
114-119 F6.4 mag e_rmag Uncertainty in rmag
121-127 F7.4 mag imag HSC S16A i band AB magnitude
129-134 F6.4 mag e_imag Uncertainty in imag
136-142 F7.4 mag zmag HSC S16A z band AB magnitude
144-149 F6.4 mag e_zmag Uncertainty in zmag
151-157 F7.4 mag ymag [16.8/24.4] HSC S16A y band AB magnitude
159-164 F6.4 mag e_ymag [0.0006/0.2] Uncertainty in ymag
166-172 F7.4 mag Jmag [16.4/22.4]? VIKING DR3 J band AB
magnitude
174-179 F6.4 mag e_Jmag [0.008/0.4]? Uncertainty in Jmag
181-187 F7.4 mag Hmag [16/21.7]? VIKING DR3 H band AB magnitude
189-194 F6.4 mag e_Hmag [0.01/0.4]? Uncertainty in Hmag
196-202 F7.4 mag Ksmag ? VIKING DR3 Ks band AB magnitude
204-209 F6.4 mag e_Ksmag ? Uncertainty in Ksmag
211-217 F7.4 mag W1mag [12.4/18]? ALLWISE 3.4 micron band
Vega magnitude
219-223 F5.3 mag e_W1mag [0.02/0.3]? Uncertainty in W1mag
225-231 F7.4 mag W2mag [10.6/17.3]? ALLWISE 4.6 micron band
Vega magnitude
233-237 F5.3 mag e_W2mag [0.02/0.4]? Uncertainty in W2mag
239-245 F7.4 mag W3mag [6.5/13]? ALLWISE 12 micron band
Vega magnitude
247-251 F5.3 mag e_W3mag [0.01/0.4]? Uncertainty in W3mag
253-258 F6.4 mag W4mag [3.8/9.6]? ALLWISE 22 micron band
Vega magnitude
260-264 F5.3 mag e_W4mag [0.02/0.4]? Uncertainty in W4mag
266-274 F9.7 mag Au [0.09/0.4]? u band Galactic extinction
correction
276-284 F9.7 mag Ag [0.05/0.3]? g band Galactic extinction
correction
286-294 F9.7 mag Ar r band Galactic extinction correction
296-304 F9.7 mag Ai i band Galactic extinction correction
306-314 F9.7 mag Az z band Galactic extinction correction
316-324 F9.7 mag Ay y band Galactic extinction correction
326-334 F9.7 mag Aj [0.01/0.1]? J band Galactic extinction
correction
336-344 F9.7 mag Ah [0.01/0.06]? H band Galactic extinction
correction
346-355 F10.8 mag Aks [0.006/0.04]? Ks band Galactic
extinction correction
357-365 F9.7 mJy F3.4 [0.02/3.1]? Flux density at 3.4 microns
367-376 F10.8 mJy e_F3.4 [0.003/0.07]? Uncertainty in F3.4
378-386 F9.7 mJy F4.6 ? Flux density at 4.6 microns
388-397 F10.8 mJy e_F4.6 ? Uncertainty in F4.6
399-407 F9.6 mJy F12 ? Flux density at 12 microns
409-416 F8.6 mJy e_F12 ? Uncertainty in F12
418-426 F9.5 mJy F22 [1.8/237]? Flux density at 22 microns
428-435 F8.6 mJy e_F22 [0.6/4.5]? Uncertainty in F22
437-443 F7.3 mJy F100 [132/802]? H-ATLAS DR1 100um flux density
445-450 F6.3 mJy e_F100 [29/46]? Uncertainty in F100
452-458 F7.3 mJy F160 ? H-ATLAS DR1 160 micron flux density
460-465 F6.3 mJy e_F160 ? Uncertainty in F160
467-474 F8.4 mJy F250 H-ATLAS DR1 250 micron flux density
476-480 F5.3 mJy e_F250 ? Uncertainty in F250
482-489 F8.4 mJy F350 ? H-ATLAS DR1 350 micron flux density
491-495 F5.3 mJy e_F350 ? Uncertainty in F350
497-504 F8.4 mJy F500 [21/171]? H-ATLAS DR1 500um flux density
506-510 F5.3 mJy e_F500 [7/9]? Uncertainty in F500
512-521 F10.6 mJy F1.4 [0.6/359] FIRST 1.4GHz flux density (2)
523-530 F8.6 mJy e_F1.4 [0.1/0.4] Uncertainty in F1.4
532-537 F6.1 mJy F150 [10/2245] TGSS ADR1 160MHz flux density
539-545 F7.3 mJy e_F150 [4/225]?=-0.105 Uncertainty in F150
547 I1 --- f_umag [0/2]? Flag on umag (3)
549 I1 --- f_gmag [0/1]? Flag on gmag (3)
551 I1 --- f_rmag [0]? Flag on rmag (3)
553 I1 --- f_imag [0]? Flag on imag (3)
555 I1 --- f_zmag [0]? Flag on zmag (3)
557 I1 --- f_ymag [0]? Flag on ymag (3)
559 I1 --- f_Jmag [0/2]? Flag on Jmag (3)
561 I1 --- f_Hmag [0/2]? Flag on Hmag (3)
563 I1 --- f_Ksmag [0/2]? Flag on Ksmag (3)
565 I1 --- f_F3.4 [0/2]? Flag on F3.4 (3)
567 I1 --- f_F4.6 [0/2]? Flag on F4.6 (3)
569 I1 --- f_F12 [0/2]? Flag on F12 (3)
571 I1 --- f_F22 [0/2]? Flag on F22 (3)
573 I1 --- f_F100 [0/2]? Flag on F100 (3)
575 I1 --- f_F160 [0/2]? Flag on F160 (3)
577 I1 --- f_F250 [0/1]? Flag on F250 (3)
579 I1 --- f_F350 [0/2]? Flag on F350 (3)
581 I1 --- f_F500 [0/2]? Flag on F500 (3)
583 I1 --- f_F1.4 [0]? Flag on F1.4 (3)
585 I1 --- f_F150 [0/1]? Flag on F150 (3)
587-593 F7.4 [W/Hz] logL1.4 [20/28] log rest-frame 1.4GHz luminosity
595-600 F6.4 [W/Hz] e_logL1.4 [0.001/0.1] Uncertainty in logL1.4
602-607 F6.4 mag E(B-V) [0.01/1] CIGALE derived (B-V) color
excess
609-614 F6.4 mag e_E(B-V) [0/0.4] Uncertainty in E(B-V)
616-624 F9.5 [Msun] logM [-38.5/12.2] CIGALE derived stellar mass
626-632 F7.5 [Msun] e_logM [0.02/0.5] Uncertainty in logM
634-642 F9.5 [Msun/yr] logSFR [-48.6/3] CIGALE derived star formation
rate
644-650 F7.5 [Msun/yr] e_logSFR [0.02/1.7] Uncertainty in logSFR
652-660 F9.5 [Msun/yr] logSFR-IR [-48.3/3.2] SFR derived
from Equation 8 (4)
662-668 F7.5 [Msun/yr] e_logSFR-IR [0.02/1.6] Uncertainty in logSFR-IR
670-678 F9.5 [Lsun] logLIR [-38.3/13.4] CIGALE derived log IR
luminosity
680-686 F7.5 [Lsun] e_logLIR [0.02/1] Uncertainty in logLIR
688-696 F9.5 [Lsun] logLIR-AGN [-39.3/13.3] GIGALE derived IR
luminosity from AGN
698-704 F7.5 [Lsun] e_logLIR-AGN [0.02/0.9] Uncertainty in logLIR-AGN
706-715 F10.7 --- alpha [-0.2/2.7] Radio spectral index
from Equation 1 (2)
717-725 F9.7 --- e_alpha [0.04/0.2]? Uncertainty in alpha
727-738 F12.8 --- qIR [-44.5/2.6] The qIR derived
from Equation 4 (5)
740-748 F9.7 --- e_qIR [0.0001/7]? Uncertainty in qIR
750-751 I2 --- DoF [10/19] Degree of freedom
from SED fitting
753-761 F9.6 --- Chi2 [0.1/24] Reduced χ2 from CIGALE
763-771 F9.5 [Msun] logMbh [-44.5/8.7] log Black hole mass
from stellar mass
773-780 F8.5 [Lsun] logLbol [-6.4/13.3] log bolometric luminosity
from best-fit SED
782-792 F11.8 [-] logLEd [-3.5/33.6] Log Eddington radio
--------------------------------------------------------------------------------
Note (1): Redshift reference as follows:
mizuki = Photometric redshift (MIZUKI: Tanaka M. 2015ApJ...801...20T 2015ApJ...801...20T
--785 occurrences);
SDSS-DR12 = Sloan Digital Sky Survey DR12 (V/147 --224 occurrences);
GAMA-DR2 = Galaxy and Mass Assembly project DR2
(Driver+ 2011, J/MNRAS/413/971 and Liske+ 2015, J/MNRAS/452/2087
--44 occurrences)
WIGGLEZ-DR1 = WiggleZ Dark Energy Survey project DR1
(Drinkwater+ 2010, J/MNRAS/401/1429 --3 occurrences)
Note (2): If an object has alpha, logL1.4 is derived from Equation 3:
L1.4GHz=(4πdL2F1.4GHz)/((1+z)1-αradio_^)
where dL is luminosity distance, F1.4GHz is observed-frame flux
density at 1.4GHz, and αradio is the radio spectral index we
estimated in Equation (1).
Otherwise, we assume alpha=0.7 for a calculation (see Section 3.3).
We define αradio from the measured radio flux density at
observed-frame frequencies at 150MHz and 1.4GHz, assuming a
power-law radio spectrum of fν∝ν-αradio_^;
Equation (1):
αradio=log(F150MHz/F1.4GHz)/log(ν1.4GHz/ν150MHz)
Note (3): Flag as follows:
0 = CIGALE (Code Investigating GALaxy Emission;
Burgarella+ 2005MNRAS.360.1413B 2005MNRAS.360.1413B ; Noll+ 2009A&A...507.1793N 2009A&A...507.1793N and
Boquien+ 2019, J/A+A/622/A103 --
http://cigale.lam.fr/2018/11/07/version-2018-0/);
1 = CIGALE with 3σ upper limit;
2 = non CIGALE.
Note (4): SFR (IR) is derived from IR luminosity contributed from SF in the
same manner as Toba+ (2017, J/ApJ/840/21) as in Equation (8):
logSFR(IR)=logLIR(SF)-9.966; see Section 4.5 for further details.
Note (5): The ratio of IR and radio luminosity (qIR) is defined as in
Equation (4): qIR=log((LIR/3.75x1012)/L1.4GHz)
where LIR is the total IR luminosity in unit of W derived from CIGALE.
3.75x1011 is the frequency (Hz) corresponding to 80um, which is used
for making qIR a dimensionless quantity. L1.4GHz in unit of W/Hz
is k-corrected luminosity at rest-frame 1.4GHz, which is derived by
Equation (3).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 I17 --- ID Unique identifier
19- 29 E11.5 um lambda [0.001/2.7e+07] Wavelength
31- 42 E12.5 mJy Flux [-2.6e-20/11591] Flux density at lambda
44- 53 F10.7 [10-7W] logL [-3.2/47.2]? log luminosity at lambda;
in erg/s units
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Yamashita et al. Paper I. 2018ApJ...866..140Y 2018ApJ...866..140Y
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 13-Dec-2019