J/ApJS/264/52 Quasar properties from SDSS. III. SDSS-IV. (Huang+, 2023)
Quasar properties from the Sloan Digital Sky Survey.
III. The quasars obtained by the SDSS-IV.
Huang W.-R., Chen Z.-G., Chen Z.-F., Li X.-F.
<Astrophys. J. Suppl. Ser., 264, 52 (2023)>
=2023ApJS..264...52H 2023ApJS..264...52H (SIMBAD/NED BibCode)
ADC_Keywords: QSOs; Spectra, optical; Redshifts; Black holes
Keywords: Astronomy data reduction; Active galaxies; Quasars;
Supermassive black holes; Catalogs
Abstract:
This paper provides the compilations of properties of the quasars
newly obtained by the Sloan Digital Sky Survey (SDSS) during the
fourth stage (SDSS-IV). The catalog is available on the journal's
website. We have measured the main properties of emission lines around
CIV, MgII, Hβ, and Hα spectral regions. We estimate the
quasar redshifts from our fits of narrow [OIII], broad MgII, and broad
CIV emission lines and find that the best redshifts included in DR16Q
are robust with respect to our measurements. Based on the broad CIV,
MgII, Hβ, and/or Hα emission lines, we calculate the virial
black hole mass with empirical relationships provided by previous
works. Systematic biases are found among the different line-based mass
estimators.
Description:
This work is the extension of Chen+ (2019, J/ApJS/244/36) to measure
the main emission lines and continuum for the 225082 quasars newly
included in the Sloan Digital Sky Survey (SDSS) Data Release 16 of the
Quasar Catalog (DR16Q; Lyke+ 2020, VII/289) with respect to the DR14Q;
Paris+ 2018, VII/286).
The quasar spectroscopic observations of the SDSS are carried out with
a dedicated wide-field 2.5m telescope, which is located at the Apache
Point Observatory, New Mexico. The spectra of the SDSS-IV quasars were
obtained with the Baryon Oscillation Spectroscopic Survey (BOSS)
spectrographs installed on the SDSS 2.5m telescope, at resolutions of
R∼1300∼2500, in a wavelength range of λ=3600∼10400Å.
The DR16Q is the final data set for the SDSS-IV quasar catalog of
eBOSS, which contains 750414 quasars. The DR16Q includes 225082 new
quasars when compared to the DR14Q, whose redshifts are shown in
Figure 1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 871 398641 Catalog of quasar properties
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See also:
VII/286 : SDSS quasar catalog, fourteenth data release (Paris+, 2018)
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
J/A+A/417/515 : I Zw 1 unusual emission line spectrum (Veron-Cetty+, 2004)
J/ApJ/708/427 : Type 2 AGNs with double-peaked [OIII] lines (Liu+, 2010)
J/ApJ/716/866 : SDSS search for binary AGN (Smith+, 2010)
J/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010)
J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)
J/ApJ/753/125 : NIR spectroscopy follow-up of 60 SDSS-DR7 QSOs (Shen+, 2012)
J/ApJS/221/32 : Narrow MgII absorption lines from SDSS-DR9Q (Chen+, 2015)
J/ApJ/831/7 : SDSS-RM project: peak velocities of QSOs (Shen+, 2016)
J/MNRAS/462/2980 : BOSS narrow CIV absorption lines. III. (Chen+, 2016)
J/ApJS/228/9 : Physical parameters of ∼300000 SDSS-DR12 QSOs (Kozlowski, 2017)
J/ApJS/234/16 : Hα & Hβ spectral regions of low-z QSOs (Chen+, 2018)
J/ApJS/235/11 : Absorption features in SDSS. I. MgII abs. (Chen+, 2018)
J/ApJS/239/23 : CIV NAL systems from SDSS-DR14 quasar spectra (Chen+, 2018)
J/ApJS/244/36 : QSO properties from SDSS. II. The first two years (Chen+, 2019)
J/ApJS/249/17 : SDSS QSO DR14 spectral properties (Rakshit+, 2020)
J/ApJS/250/3 : Variable MgII NALs in SDSS DR14 (Chen+, 2020)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- SDSS SDSS designation
(HHMMSS.ss+DDMMSS.s; J2000.0) (1)
20- 24 I5 --- Plate Spectroscopic plate number
26- 30 I5 --- MJD [55176/58543] Modified Julian date
32- 35 I4 --- Fiber Spectroscopic fiber number
37- 46 F10.4 --- z [0.001/7.1]?=-9999 Best redshift taken
from DR16Q
48- 57 F10.4 --- zOIII [0.01/0.9]?=-9999 The [OIII]5007Å
based redshift
59- 68 F10.4 --- zMgII [0.3/2.5]?=-9999 MgII2799Å based
redshift
70- 79 F10.4 --- zCIV [1.5/5.1]?=-9999 CIV1548Å based
redshift
81- 88 F8.2 [10-7W] logL5100 [37.8/46.2]?=-9999 Monochromatic
luminosity at 5100Å
90- 97 F8.2 [10-7W] logL3000 [41.7/47.5]?=-9999 Monochromatic
luminosity at 3000Å
99- 106 F8.2 [10-7W] logL1350 [43.8/47.6]?=-9999 Monochromatic
luminosity at 1350Å
108- 115 F8.2 [10-7W] e_logL5100 [0/122]?=-9999 Uncertainty in logL5100
117- 124 F8.2 [10-7W] e_logL3000 [0/159]?=-9999 Uncertainty in logL3000
126- 133 F8.2 [10-7W] e_logL1350 [0/2.4]?=-9999 Uncertainty in logL1350
135- 142 F8.2 [Msun] logMBH-Ha [3.8/9.8]?=-9999 Virial BH mass from
Hα line
144- 151 F8.2 [Msun] logMBH-Hb [3.9/9.9]?=-9999 Virial BH mass from
Hβ line
153- 160 F8.2 [Msun] logMBH-MgII [6.5/10.5]?=-9999 Virial BH mass from
MgII 2799Å line
162- 169 F8.2 [Msun] logMBH-CIV [7/10.6]?=-9999 Virial BH mass from
CIV 1548Å line
171- 178 F8.2 [Msun] e_logMBH-Ha [0/8.5]?=-9999 Uncertainty in logMBH-Ha
180- 187 F8.2 [Msun] e_logMBH-Hb [0/61]?=-9999 Uncertainty in logMBH-Hb
189- 196 F8.2 [Msun] e_logMBH-MgII [0/99]?=-9999 Uncertainty in logMBH-MgII
198- 205 F8.2 [Msun] e_logMBH-CIV [0/3.3]?=-9999 Uncertainty in logMBH-CIV
207- 214 F8.2 [10-7W] logL-bHa [37.3/44.2]?=-9999 Line luminosity of
broad Hα emission line
216- 223 F8.2 [10-7W] e_logL-bHa [0/0.8]?=-9999 Uncertainty in logL-bHa
225- 232 F8.2 0.1nm W-bHa [3.5/1584]?=-9999 Rest-frame equivalent
width of broad Hα emission line
234- 241 F8.2 0.1nm e_W-bHa [0/159]?=-9999 Uncertainty in W-bHa
243- 250 F8.2 km/s FWHM-bHa [1094/17272]?=-9999 FWHM of broad
Hα emission line
252- 259 F8.2 km/s e_FWHM-bHa [0/7376]?=-9999 Uncertainty in FWHM-bHa
261- 268 F8.2 [10-7W] logL-nHa [39.4/43.2]?=-9999 Line luminosity of
narrow Hα emission line
270- 277 F8.2 [10-7W] e_logL-nHa [0/0.3]?=-9999 Uncertainty of logL-nHa
279- 286 F8.2 0.1nm W-nHa [0.9/828]?=-9999 Rest-frame equivalent
width of narrow Hα emission line.
288- 295 F8.2 km/s FWHM-nHa [198/1191]?=-9999 FWHM of narrow
Hα emission line
297- 304 F8.2 [10-7W] logL-NIIa [36.9/42.7]?=-9999 Line luminosity of
[NII]6549Å emission line
306- 313 F8.2 [10-7W] e_logL-NIIa [0/1.4]?=-9999 Uncertainty in logL-NIIa
315- 322 F8.2 0.1nm W-NIIa [0.3/49.1]?=-9999 Rest-frame equivalent
width of [NII]6549Å emission line
324- 331 F8.2 0.1nm e_W-NIIa [0/32.1]?=-9999 Uncertainty in W-NIIa
333- 340 F8.2 [10-7W] logL-NIIb [37.4/43.2]?=-9999 Line luminosity of
[NII]6585Å emission line
342- 349 F8.2 [10-7W] e_logL-NIIb [0/1.4]?=-9999 Uncertainty of logL-NIIb
351- 358 F8.2 0.1nm W-NIIb [1/146]?=-9999 Rest-frame equivalent
width of [NII]6585Å emission line
360- 367 F8.2 0.1nm e_W-NIIb [0/96]?=-9999 Uncertainty in W-NIIb
369- 376 F8.2 [10-7W] logL-SIIa [39.2/42.7]?=-9999 Line luminosity of
[SII]6718Å emission line
378- 385 F8.2 [10-7W] e_logL-SIIa [0/0.8]?=-9999 Uncertainty in logL-SIIa
387- 394 F8.2 0.1nm W-SIIa [0.3/89]?=-9999 Rest-frame equivalent
width of [SII]6718Å emission line
396- 403 F8.2 0.1nm e_W-SIIa [0/8]?=-9999 Uncertainty in W-SIIa
405- 412 F8.2 [10-7W] logL-SIIb [39/42.6]?=-9999 Line luminosity of
[SII]6732Å emission line
414- 421 F8.2 [10-7W] e_logL-SIIb [0/0.7]?=-9999 Uncertainty in logL-SIIb
423- 430 F8.2 0.1nm W-SIIb [0.4/85.1]?=-9999 Rest-frame equivalent
width of [SII]6732Å emission line
432- 439 F8.2 0.1nm e_W-SIIb [0/11]?=-9999 Uncertainty in W-SIIb
441- 448 F8.2 --- ch2Ha [0.4/106]?=-9999 Reduced χ2 for
emission-line fits in Hα spectral
region
450- 457 F8.2 --- NpixHa [210/264]?=-9999 Number of good pixels
in the range of 6400-6800Å
459- 466 F8.2 --- SNHa [2/95]?=-9999 Median SNR per pixel in
the range of 6400-6800Å
468- 475 F8.2 --- alphaHa [-3.6/6.6]?=-9999 Power-law slope of
continuum in Hα spectral region
477- 484 F8.2 [10-7W] logL-bHb [36/44.3]?=-9999 Line luminosity of
broad Hβ emission line
486- 493 F8.2 [10-7W] e_logL-bHb [0/0.5]?=-9999 Uncertainty in logL-bHb
495- 502 F8.2 0.1nm W-bHb [3.6/271]?=-9999 Rest-frame equivalent
width of broad Hβ emission line
504- 511 F8.2 0.1nm e_W-bHb [0.2/34]?=-9999 Uncertainty in W-bHb
513- 520 F8.2 km/s FWHM-bHb [1098/15784]?=-9999 FWHM of broad
Hβ emission line
522- 529 F8.2 km/s e_FWHM-bHb [0/3934]?=-9999 Uncertainty in FWHM-bHb
531- 538 F8.2 [10-7W] logL-nHb [35.6/44]?=-9999 Line luminosity of
narrow Hβ emission line
540- 547 F8.2 [10-7W] e_logL-nHb [0/0.2]?=-9999 Uncertainty in logL-nHb
549- 556 F8.2 0.1nm W-nHb [0.2/178]?=-9999 Rest-frame equivalent
width of narrow Hβ emission line
558- 565 F8.2 km/s FWHM-nHb [35/1184]?=-9999 FWHM of narrow Hβ
emission line
567- 574 F8.2 [10-7W] logL-OIIIa [36/43.6]?=-9999 Total luminosity of
narrow and broad [OIII]4959Å emission
line
576- 583 F8.2 [10-7W] e_logL-OIIIa [0/0.6]?=-9999 Uncertainty in logL-OIIIa
585- 592 F8.2 0.1nm W-OIIIa [0.1/747]?=-9999 Rest-frame equivalent
width of [OIII]4959Å emission line
594- 601 F8.2 0.1nm e_W-OIIIa [0/34]?=-9999 Uncertainty in W-OIIIa
603- 610 F8.2 [10-7W] logL-OIIIb [36.5/44.1]?=-9999 Total luminosity of
narrow and broad [OIII]5007Å emission
line
612- 619 F8.2 [10-7W] e_logL-OIIIb [0/0.6]?=-9999 Uncertainty in logL-OIIIb
621- 628 F8.2 0.1nm W-OIIIb [0.2/2262]?=-9999 Rest-frame equivalent
width of [OIII]5007Å emission line
630- 637 F8.2 0.1nm e_W-OIIIb [0/102]?=-9999 Uncertainty in W-OIIIb
639- 646 F8.2 --- ch2-Hb [0.4/43.7]?=-9999 Reduced χ2 for
emission-line fits in Hβ spectral
region
648- 655 F8.2 --- Npix-Hb [213/355]?=-9999 Number of good pixels
in the range of 4700-5100Å
657- 664 F8.2 --- SN-Hb [2/103]?=-9999 Median SNR per pixel in
the range of 4700-5100Å
666- 673 F8.2 --- alpha-Hb [-5.3/5.4]?=-9999 Power-law slope of
continuum in Hβ spectral region.
675- 682 F8.2 [10-7W] logL-bMgII [41/45.3]?=-9999 Line luminosity of
broad MgII emission line
684- 691 F8.2 [10-7W] e_logL-bMgII [0/1]?=-9999 Uncertainty in logL-bMgII
693- 700 F8.2 [10-7W] logL-MgII [41.2/45.3]?=-9999 Total luminosity of
broad and narrow MgII emission line
702- 709 F8.2 [10-7W] e_logL-MgII [0/1]?=-9999 Uncertainty in logL-MgII
711- 718 F8.2 0.1nm W-bMgII [1.2/390.1]?=-9999 Rest-frame equivalent
width of broad MgII emission line
720- 727 F8.2 0.1nm e_W-bMgII [0/183]?=-9999 Uncertainty in W-bMgII
729- 736 F8.2 km/s FWHM-bMgII [964/11077]?=-9999 FWHM of broad MgII
emission line
738- 745 F8.2 km/s e_FWHM-bMgII [0/3895]?=-9999 Uncertainty FWHM-bMgII
747- 754 F8.2 --- ch2-MgII [0.3/164]?=-9999 Reduced χ2 for
emission-line fits in MgII spectral
region
756- 763 F8.2 --- Npix-MgII [479/792]?=-9999 Number of good pixels
in the range of 2500-3000Å
765- 772 F8.2 --- SN-MgII [1/88]?=-9999 Median SNR per pixel in
the range of 2500-3000Å
774- 781 F8.2 --- alpha-MgII [-6.3/7.2]?=-9999 Power-law slope of
continuum in the MgII spectral region
783- 790 F8.2 [10-7W] logL-bCIV [42.2/45.6]?=-9999 Line luminosity of
broad CIV emission line
792- 799 F8.2 [10-7W] e_logL-bCIV [0/1.1]?=-9999 Uncertainty in logL-bCIV
801- 808 F8.2 0.1nm W-bCIV [0.8/841]?=-9999 Rest-frame equivalent
width of broad CIV emission line
810- 817 F8.2 0.1nm e_W-bCIV [0/1554]?=-9999 Uncertainty in W-bCIV
819- 826 F8.2 km/s FWHM-bCIV [1094/16591]?=-9999 FWHM of broad CIV
emission line
828- 835 F8.2 km/s e_FWHM-bCIV [0/7769]?=-9999 Uncertainty in FWHM-bCIV
837- 844 F8.2 --- ch2-CIV [0.3/515]?=-9999 Reduced χ2 for
emission-line fits in CIV spectral
region
846- 853 F8.2 --- Npix-CIV [229/562]?=-9999 Number of good pixels
in the range of 1450-1650Å
855- 862 F8.2 --- SN-CIV [0.6/70]?=-9999 Median SNR per pixel in
the range of 1450-1650Å
864- 871 F8.2 --- alpha-CIV [-10.3/7.4]?=-9999 Power-law slope of
continuum in the CIV spectral region
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Note (1): 134 SDSS DR16 identifiers have been corrected at CDS to match the
SDSS DR16 (Cat. V/154) identifiers and particularly correct the wrong
RA-DEC identifications with missing zero in RA and/or DEC.
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History:
From electronic version of the journal
References:
Chen et al. Paper I. 2018ApJS..234...16C 2018ApJS..234...16C Cat. J/ApJS/234/16
Chen et al. Paper II. 2019ApJS..244...36C 2019ApJS..244...36C Cat. J/ApJS/244/36
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 13-Mar-2023