J/ApJS/243/21 A complete sample of broad-line AGN from SDSS-DR7 (Liu+, 2019)
A comprehensive and uniform sample of broad-line active galactic nuclei
from the SDSS DR7.
Liu H.-Y., Liu W.-J., Dong X.-B., Zhou H., Wang T., Lu H., Yuan W.
<Astrophys. J. Suppl. Ser., 243, 21 (2019)>
=2019ApJS..243...21L 2019ApJS..243...21L
ADC_Keywords: Active gal. nuclei; Spectra, optical; Redshifts;
Equivalent widths; Photometry, SDSS; Photometry, infrared;
Ultraviolet; Radio sources; X-ray sources; Surveys
Keywords: galaxies: active ; galaxies: nuclei ; galaxies: Seyfert ;
quasars: emission lines ; surveys
Abstract:
A new, complete sample of 14584 broad-line active galactic nuclei
(AGNs) at z<0.35 is presented, which are uncovered homogeneously from
the complete database of galaxies and quasars observed
spectroscopically in the Sloan Digital Sky Survey Seventh Data
Release. The stellar continuum is properly removed for each spectrum
with significant host absorption line features, and careful analyses
of the emission line spectra, particularly in the Hα and Hβ
wavebands, are carried out. The broad Balmer emission line,
particularly Hα, is used to indicate the presence of an AGN. The
broad Hα lines have luminosities in a range of
1038.5-1044.3erg/s, and line widths (FWHMs) of 500-34000km/s. The
virial black hole masses, estimated from the broad-line measurements,
span a range of 105.1-1010.3M☉, and the Eddington ratios
vary from -3.3 to 1.3 in logarithmic scale. Other quantities such as
multiwavelength photometric properties and flags denoting peculiar
line profiles are also included in this catalog. We describe the
construction of this catalog and briefly discuss its properties. The
catalog is publicly available online. This homogeneously selected AGN
catalog, along with the accurately measured spectral parameters,
provides the most updated, largest AGN sample data, which will enable
further comprehensive investigations of the properties of the AGN
population in the low-redshift universe.
Description:
The SDSS is a comprehensive imaging and spectroscopic survey using a
dedicated 2.5m telescope located at Apache Point Observatory to image
over 10000deg2 of sky and to perform follow-up spectroscopic
observations.
The telescope uses a wide-field imager (filters ugriz) and
a 640-fiber-fed pair of multiobjects double spectrographs covering the
wavelength 3800-9200Å with a resolution varying from 1850 to 2200.
We have compiled a sample of 14584 type 1 AGNs based on detection of a
broad Hα line from a total of about one million SDSS DR7
spectroscopic objects.
Part I of the catalog (see Table 1) is composed of the basic
information of these sources.
Part II of the catalog (see Table 2) includes the emission line
measurements derived from the spectral analysis in this work.
Finally, in part III of the catalog (Table 3), we supplement
photometric measurements in the optical, ultraviolet (UV),
near-infrared (NIR), mid-infrared (MIR), X-ray, and radio drawn from
GALEX, 2MASS, WISE, ROSAT, and FIRST; see Section 4.3.3 for further
details.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 81 14584 The SDSS DR7 broad-line AGN sample
(part I: basic information)
table2.dat 1493 14584 Part II: spectral measurements based on
the SDSS DR7 data
table3.dat 1054 14584 Part III: photometrical data in multiwavelength band
including X-ray, UV, optical, Near-IR, Mid-IR, and
radio
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See also:
II/207 : Palomar-Green catalog UV-excess stellar objects (Green+ 1986)
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)
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)
VII/279 : SDSS quasar catalog: twelfth data release (Paris+, 2017)
II/335 : Catalog of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)
J/MNRAS/243/1 : A catalogue of faint UV-excess objects (Boyle+ 1990)
J/A+A/417/515 : I Zw 1 unusual emission line spectrum (Veron-Cetty+, 2004)
J/ApJ/633/638 : Variable quasar sample from SDSS (Wilhite+, 2005)
J/ApJ/641/L21 : BH mass & velocity dispersion relation (Greene+, 2006)
J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)
J/AJ/131/84 : AGNs and host galaxies information (Vanden Berk+, 2006)
J/ApJS/166/128 : Narrow line Seyfert 1 galaxies from SDSS-DR3 (Zhou+, 2006)
J/AJ/133/313 : AGN from RASS and SDSS DR5 (Anderson+, 2007)
J/ApJ/670/92 : New sample of low-mass black holes in AGN (Greene+, 2007)
J/ApJ/667/131 : Mass function of active black holes (Greene+, 2007)
J/MNRAS/383/581 : Broad-line Balmer decrements in blue AGN (Dong+, 2008)
J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008)
J/ApJ/690/20 : Models of the AGN and black hole populations (Shankar+, 2009)
J/ApJ/736/86 : FeII emission in SDSS type 1 AGNs (Dong+, 2011)
J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)
J/ApJS/201/31 : Emission-line galaxies from SDSS. I. (Ge+, 2012)
J/ApJ/755/167 : Low-mass black holes in SDSS Seyfert 1 galaxies (Dong+, 2012)
J/MNRAS/423/600 : Type-1 low-z AGN emission properties (Stern+, 2012)
J/ApJS/219/1 : Catalog of Type-1 AGNs from SDSS-DR7 (Oh+, 2015)
J/ApJ/798/54 : "Under-massive" black hole candidates (Graham+, 2015)
J/A+A/588/A103 : 2nd ROSAT all-sky survey (2RXS) source cat. (Boller+, 2016)
J/MNRAS/455/2551 : SDSS/3XMM X-ray-selected LINERs (Nisbet+, 2016)
J/ApJS/228/9 : Physical param. of ∼300000 SDSS-DR12 QSOs (Kozlowski, 2017)
J/ApJS/235/40 : Low-mass black holes in Sy1 gal. II. SDSS-DR7 (Liu+, 2018)
J/other/Ap/62.147 : Activity types of ROSAT/SDSS galaxies (Paronyan+, 2019)
http://www.sdss.org/ : SDSS home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Seq [1/14584] Internal index identifier
7- 25 A19 --- Name SDSS designation (JHHMMSS.ss+DDMMSS.s)
27- 38 F12.8 deg RAdeg Right Ascension in decimal degrees (J2000)
40- 53 F14.10 deg DEdeg [-11.2/83.3] Declination in decimal degrees (J2000)
55- 64 F10.8 --- z [0.003/0.4] SDSS pipeline redshift
66- 69 I4 --- Plate [266/2974] Spectroscopic plate number
71- 75 I5 d MJD [51608/54653] Modified Julian Date
of spectroscopic observation
77- 79 I3 --- Fiber [1/640] Spectroscopic fiber number
81- 81 I1 --- Nsp [1/4] Number of spectroscopic observations
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Seq [1/14584] Internal index identifier
7- 24 F18.13 0.1nm lamBHa [6514.6/6641] Centroid wavelength of
broad Hα in Å
26- 47 F22.20 0.1nm e_lamBHa [6.5e-05/10] Uncertainty in lamBHa
49- 68 F20.15 [10-7W] logBHa [38.5/44.3]?=-999 log broad Hα line
luminosity in erg/s
70- 94 F25.20 [10-7W] e_logBHa [0.0001/0.09]?=-999 Uncertainty in logBHa
96- 115 F20.14 km/s FWHMBHa [428/34117]?=-999 FWHM of broad Hα
117- 146 F30.25 km/s e_FWHMBHa [2e-10/4357]?=-999 Uncertainty in FWHMBHa
148- 168 F21.16 0.1nm EWBHa [5.5/901]?=-999 Restframe equivalent width
of broad Hα in Å
170- 193 F24.19 0.1nm e_EWBHa [0.0004/214]?=-999 Uncertainty in EWBHa
195- 212 F18.13 0.1nm lamNHa [6547/6576] Centroid wavelength of
narrow Hα in Å
214- 244 F31.26 0.1nm e_lamNHa [8.4e-11/7.5]?=-999 Uncertainty in lamNHa
246- 265 F20.15 [10-7W] logNHa [38.4/43.3]?=-999 log narrow Hα
line luminosity in erg/s
267- 290 F24.19 [10-7W] e_logNHa [0.002/1]?=-999 Uncertainty in logNHa
292- 310 F19.14 km/s FWHMNHa [70.5/1412.5]?=-999 FWHM of narrow Hα
312- 334 F23.18 km/s e_FWHMNHa [0.005/412]?=-999 Uncertainty in FWHMNHa
336- 358 F23.18 0.1nm EWNHa [0.006/822]?=-999 Restframe equivalent width
of narrow Hα in Å
360- 382 F23.18 0.1nm e_EWNHa [0.004/91]?=-999 Uncertainty in EWNHa
384- 403 F20.15 [10-7W] log6583 [38/42.6]?=-999 log [NII]6583Å line
luminosity in erg/s
405- 428 F24.19 [10-7W] e_log6583 [0.001/1]?=-999 Uncertainty in log6583
430- 451 F22.17 0.1nm EW6583 [0.1/584]?=-999 Restframe equivalent width
of [NII]6583Å in Å
453- 475 F23.18 0.1nm e_EW6583 [0.01/73]?=-999 Uncertainty in EW6583
477- 496 F20.15 [10-7W] log6716 [37.9/42.3]?=-999 log [SII]6716Å line
luminosity in erg/s
498- 521 F24.19 [10-7W] e_log6716 [0.002/0.9]?=-999 Uncertainty in log6716
523- 544 F22.17 0.1nm EW6716 [0.06/253]?=-999 Restframe equivalent width
of [SII] 6716Å in Å
546- 568 F23.18 0.1nm e_EW6716 [0.009/57]?=-999 Uncertainty in EW6716
570- 589 F20.15 [10-7W] log6731 [37.8/42.3]?=-999 log [SII]6731Å line
luminosity in erg/s
591- 614 F24.19 [10-7W] e_log6731 [0.002/1]?=-999 Uncertainty in log6731
616- 637 F22.17 0.1nm EW6731 [0.06/252]?=-999 Restframe equivalent width
of [SII]6731Å in Å
639- 661 F23.18 0.1nm e_EW6731 [0.009/155]?=-999 Uncertainty in EW6731
663- 682 F20.15 [10-7W] log6300 [37.6/42]?=-999 log [OI]6300Å line
luminosity in erg/s
684- 707 F24.19 [10-7W] e_log6300 [0.002/0.5]?=-999 Uncertainty in log6300
709- 731 F23.18 0.1nm EW6300 [0.04/179]?=-999 Restframe equivalent width
of [OI]6300Å in Å
733- 755 F23.18 0.1nm e_EW6300 [0.008/28]?=-999 Uncertainty in EW6300
757- 774 F18.13 0.1nm lamBHb [4798.8/4944.1] Centroid wavelength of
broad Hβ in Å
776- 806 F31.26 0.1nm e_lamBHb [9.7e-11/10]?=-999 Uncertainty in lamBHb
808- 827 F20.15 [10-7W] logBHb [38.9/44]?=-999 log broad Hβ line
luminosity in erg/s
829- 855 F27.22 [10-7W] e_logBHb [1e-6/0.4]?=-999 Uncertainty in logBHb
857- 876 F20.14 km/s FWHMBHb [506.7/34120.1]?=-999 FWHM of broad Hβ
878- 909 F32.27 km/s e_FWHMBHb [1.6e-11/4094]?=-999 Uncertainty in FWHMBHb
911- 932 F22.17 0.1nm EWBHb [0.08/781]?=-999 Restframe equivalent width
of broad Hβ in erg/s
934- 958 F25.20 0.1nm e_EWBHb [6.3e-5/113]?=-999 Uncertainty in EWBHb
960- 977 F18.13 0.1nm lamNHb [4764.1/4879.9] Centroid wavelength of
narrow Hβ in Å
979- 998 F20.15 [10-7W] logNHb [37.7/42.7]?=-999 log narrow Hβ line
luminosity in erg/s
1000-1023 F24.19 [10-7W] e_logNHb [0.002/1]?=-999 Uncertainty in logNHb
1025-1047 F23.18 0.1nm EWNHb [0.004/281]?=-999 Restframe equivalent width
of narrow Hβ in Å
1049-1072 F24.19 0.1nm e_EWNHb [0.001/67]?=-999 Uncertainty in EWNHb
1074-1091 F18.13 0.1nm lam5007 [4993.8/5020] Centroid wavelength of
[OIII]5007Å in Å
1093-1123 F31.26 0.1nm e_lam5007 [2.6e-10/6]?=-999 Uncertainty in lam5007
1125-1144 F20.15 [10-7W] log5007 [37.6/43.4]?=-999 log [OIII]5007Å line
luminosity in erg/s
1146-1171 F26.21 [10-7W] e_log5007 [2.8e-6/0.6]?=-999 Uncertainty in log5007
1173-1191 F19.14 km/s FWHM5007 [70.5/2396.1]?=-999 FWHM of [OIII]5007Å
1193-1215 F23.18 km/s e_FWHM5007 [0.04/706]?=-999 Uncertainty in FWHM5007
1217-1238 F22.17 0.1nm EW5007 [0.1/1376.1]?=-999 Restframe equivalent
width of [OIII]5007Å in Å
1240-1264 F25.20 0.1nm e_EW5007 [0.0001/27]?=-999 Uncertainty in EW5007
1266-1285 F20.15 [10-7W] log4570 [38.1/43.7]?=-999 log FeII 4570Å line
luminosity in erg/s
1287-1311 F25.20 [10-7W] e_log4570 [0.0001/0.5]?=-999 Uncertainty in log4570
1313-1335 F23.18 0.1nm EW4570 [0.04/758]?=-999 Restframe equivalent width
of FeII 4570Å in Å
1337-1359 F23.18 0.1nm e_EW4570 [0.005/89]?=-999 Uncertainty in EW4570
1361-1378 F18.15 [10-7W] logL5100 [40.5/45.7] log monochromatic luminosity
at 5100Å in erg/s
1380-1403 F24.22 [10-7W] e_logL5100 [1.7e-06/0.5] Uncertainty in logL5100
1405-1405 I1 --- Mult [0/2]? Multipeak flag (1)
1407-1427 F21.16 [Msun] logMBHb [5/10.3]?=-999 Ho & Kim 2015ApJ...809..123H 2015ApJ...809..123H
virial BH mass from Hb
1429-1449 F21.16 [Msun] logMBHa [5/10.4]?=-999 Ho & Kim 2015ApJ...809..123H 2015ApJ...809..123H
plus Greene & Ho 2005ApJ...630..122G 2005ApJ...630..122G
virial BH mass from Ha
1451-1469 F19.16 [Msun] logMBH [5/10.3] Adopted fiducial virial
black hole mass
1471-1493 F23.20 [-] logEdd [-3.3/1.3] log Eddington ratio based on
the fiducial virial BH mass
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Note (1): Flag as follows:
0 = no peculiar profile;
1 = [O III] 5007A with multiple peak profile;
2 = broad Balmer line with multiple peak profile.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Seq [1/14584] Internal index identifier
7- 24 F18.15 mag psfumag [15.1/25.8] PSF u band magnitude (1)
26- 45 F20.18 mag e_psfumag [0.006/5] Uncertainty in psfumag
47- 64 F18.15 mag psfgmag [15.1/22.6] PSF g band magnitude (1)
66- 85 F20.18 mag e_psfgmag [0.008/1.7] Uncertainty in psfgmag
87- 104 F18.15 mag psfrmag [14.9/21.3] PSF r band magnitude (1)
106- 126 F21.19 mag e_psfrmag [0.007/2] Uncertainty in psfrmag
128- 145 F18.15 mag psfimag [14.8/24.4] PSF i band magnitude (1)
147- 166 F20.18 mag e_psfimag [0.008/2] Uncertainty in psfirmag
168- 185 F18.15 mag psfzmag [14.6/22.9] PSF z band magnitude (1)
187- 206 F20.18 mag e_psfzmag [0.01/3.7] Uncertainty in psfzrmag
208- 225 F18.15 mag petroumag [14.6/29.6] Petrosian u band magnitude (1)
227- 248 F22.19 mag e_petroumag [0.003/25.7] Uncertainty in petroumag
250- 267 F18.15 mag petrogmag [12.5/33] Petrosian g band magnitude (1)
269- 291 F23.19 mag e_petrogmag [0.001/123.1] Uncertainty in petrogmag
293- 310 F18.15 mag petrormag [11.6/21.6] Petrosian r band magnitude (1)
312- 332 F21.19 mag e_petrormag [0.0009/5.2] Uncertainty in petrormag
334- 351 F18.15 mag petroimag [11.2/30.6] Petrosian i band magnitude (1)
353- 373 F21.19 mag e_petroimag [0.001/5.8] Uncertainty in petroimag
375- 392 F18.15 mag petrozmag [10.9/30.8] Petrosian z band magnitude (1)
394- 415 F22.19 mag e_petrozmag [0.002/27.3] Uncertainty in petrozmag
417- 436 F20.15 mag FUVmag [15/23]?=-999 GALEX FUV band magnitude (1)
438- 449 F12.7 mag e_FUVmag [0.01/0.6]?=-999 Uncertainty in FUVmag
451- 470 F20.15 mag NUVmag [14.9/23.3]?=-999 GALEX NUV magnitude (1)
472- 484 F13.8 mag e_NUVmag [0.005/0.5]?=-999 Uncertainty in NUVmag
486- 503 F18.15 mag Jmag [0/19]?=0 2MASS J band magnitude from PSC
505- 527 F23.18 mag e_Jmag [0.02/0.4]?=-999 Uncertainty in Jmag
529- 548 F20.15 mag Hmag [10.8/18]?=-999 2MASS H magnitude from PSC
550- 572 F23.18 mag e_Hmag [0.02/0.4]?=-999 Uncertainty in Hmag
574- 593 F20.15 mag Ksmag [10/17.3]?=-999 2MASS Ks magnitude from PSC
595- 617 F23.18 mag e_Ksmag [0.02/0.4]?=-999 Uncertainty in Ksmag
619- 638 F20.15 mag JXmag [9.3/16.7]?=-999 2MASS J magnitude from XSC
640- 662 F23.18 mag e_JXmag [0.01/0.5]?=-999 Uncertainty in JXmag
664- 683 F20.15 mag HXmag [8.6/16.1]?=-999 2MASS H magnitude from XSC
685- 707 F23.18 mag e_HXmag [0/0.5]?=-999 Uncertainty in HXmag
709- 728 F20.15 mag KsXmag [8.3/14.7]?=-999 2MASS Ks magnitude from XSC
730- 752 F23.18 mag e_KsXmag [0.01/0.4]?=-999 Uncertainty in KsXmag
754- 773 F20.15 mag W1mag [9/17.4]?=-999 WISE 3.4um band magnitude
775- 797 F23.18 mag e_W1mag [0.02/0.3]?=-999 Uncertainty in W1mag
799- 818 F20.15 mag W2mag [8/16.7]?=-999 WISE 4.6um band magnitude
820- 842 F23.18 mag e_W2mag [0.01/0.4]?=-999 Uncertainty in W2mag
844- 864 F21.16 mag W3mag [5/13.6]?=-999 WISE 12um band magnitude
866- 888 F23.18 mag e_W3mag [0.01/0.6]?=-999 Uncertainty in W3mag
890- 910 F21.16 mag W4mag [2.6/10.5]?=-999 WISE 22um band magnitude
912- 934 F23.18 mag e_W4mag [0.01/0.6]?=-999 Uncertainty in W4mag
936- 958 F23.18 ct/s ROSAT [0/12.4]?=-999 ROSAT 0.1-2.4keV count rate
960- 984 F25.20 ct/s e_ROSAT [0/0.1]?=-999 Uncertainty in ROSAT
986- 987 I2 --- FIRST [-1/2]? FIRST flag (2)
989-1009 F21.16 mJy Fpeak [0.7/2259]?=-999 FIRST peak 20cm flux density
1011-1031 F21.16 mJy Fint [0.4/2443]?=-999 FIRST integrated 20cm
flux density
1033-1054 F22.17 mJy Rms [0.09/1]?=-999 FIRST local noise estimate
at source
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Note (1): Uncorrected for Galactic extinction.
Note (2): Flag as follows:
-1 = not in FIRST footprint;
0 = FIRST undetected;
1 = core-dominant;
2 = lobe-dominant.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 16-Dec-2019