J/ApJS/244/36 QSO properties from SDSS. II. The first two years (Chen+, 2019)
Quasar properties from the Sloan Digital Sky Survey.
II. The quasars obtained by the SDSS-IV in the first two years.
Chen Z.-F., Yi S.-X., Pang T.-T., Chen Z.-G., Gui R.-J., Wang Z.-W.,
Mo X.-H., Yi T.-F.
<Astrophys. J. Suppl. Ser., 244, 36-36 (2019)>
=2019ApJS..244...36C 2019ApJS..244...36C (SIMBAD/NED BibCode)
ADC_Keywords: QSOs; Spectra, optical; Redshifts; Equivalent widths; Surveys
Keywords: Black hole physics; Quasars; Active galaxies; Astronomy data reduction
Abstract:
This work aims to measure the properties of continuum and emission
lines around CIV, MgII, Hβ, and Hα for the quasars observed
by the extended Baryon Oscillation Spectroscopic Survey (eBOSS) during
the first two years. We determine the quasar redshifts based on narrow
[OIII]λ5007, broad MgIIλ2799, and/or CIVλ1548
emission lines. The comparisons between the visual inspection
redshifts included in DR14Q and the redshifts determined by us suggest
that the visual inspection redshifts would be robust. We also infer
the virial black hole mass of quasars based on CIV, MgII, Hβ,
and/or Hα broad emission lines, using empirical relationships
reported by previous studies. Systematic differences are remarkable
among different line-based mass estimators reported by previous
studies. Using the empirical relationship (Equation (1)), we improve
the line-based mass estimators by recalibrating new coefficient (a,b),
so that different line-based mass estimators are more consistent. We
find that (a,b)=(0.96,0.5), (0.91,0.5), (0.82,0.5), and (0.77,0.5) are
the best choices for the Hα-, Hβ-, MgII-, and CIV-based
mass estimators, respectively. All these above properties are publicly
available. We also find that the line and continuum luminosities are
tightly correlated with each other. The Balmer lines show a negative
Baldwin effect, while the metal lines display a positive Baldwin
effect. In addition, we find that tight correlations are indwelled in
different line luminosities.
Description:
The SDSS dedicated wide-field 2.5m telescope is located at the Apache
Point Observatory, New Mexico. All the quasar spectra of the
SDSS-IV/eBOSS (Dawson+ 2016AJ....151...44D 2016AJ....151...44D and
Blanton+ 2017AJ....154...28B 2017AJ....154...28B) are obtained with the BOSS spectrographs
installed on the SDSS 2.5m telescope. The spectra have resolutions of
1300<R<2500 in a wavelength range of 3600<λ<10400Å.
During the first two years (2014 July-2016), the SDSS-IV/eBOSS had
spectroscopically observed 173559 quasars with absolute apparent
magnitudes of Mi[z=2]<-20.5mag, whose spectra were visually
inspected.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 565 173935 SDSS-IV/eBOSS quasar catalog
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See also:
VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
VII/286 : SDSS quasar catalog, fourteenth data release (Paris+, 2018)
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/MNRAS/366/480 : Emission-line properties of Seyfert 2 nuclei (Gu+, 2006)
J/AJ/131/1 : Binary quasars in the SDSS (Hennawi+, 2006)
J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)
J/AJ/133/2222 : Clustering of high-redshift QSOs from SDSS (Shen+, 2007)
J/ApJ/680/169 : SDSS DR5 virial black hole masses (Shen+, 2008)
J/MNRAS/397/1713 : SDSS DR3 flat-spectrum radio quasars (Chen+, 2009)
J/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010)
J/ApJ/708/427 : Type 2 AGNs with double-peaked [OIII] lines (Liu+, 2010)
J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)
J/MNRAS/462/2980 : BOSS narrow CIV absorption lines. III. (Chen+, 2016)
J/ApJ/831/7 : SDSS-RM project: peak velocities of QSOs (Shen+, 2016)
J/ApJS/228/9 : Parameters of ∼300000 SDSS-DR12 QSOs (Kozlowski, 2017)
J/ApJS/235/11 : Absorption features in SDSS. I. MgII abs. (Chen+, 2018)
J/ApJS/234/16 : Hα & Hβ spectral regions of QSOs (Chen+, 2018)
J/AJ/155/189 : LAMOST Quasar Survey: QSO data from DR2&3 (Dong+, 2018)
http://www.sdss.org/ : SDSS home page
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- SDSS SDSS DR14 (VII/286) designation
(HHMMSS.ss+DDMMSs.s; J2000 -- except for
524 not correcly written objects)
20- 24 I5 --- Plate Spectroscopic plate number
26- 30 I5 d MJD Modified Julian Date (JD-2400000.5)
32- 35 I4 --- Fiber Spectroscopic fiber number
37- 42 F6.4 --- zVI [0.008/7] Redshift, visual inspection
taken from DR14Q
44- 49 F6.4 --- zOIII [0.03/0.9]?=0 Redshift,
[OIII] 5007Å based (1)
51- 56 F6.4 --- zMgII [0.3/2.5]?=0 Redshift,
MgII 2799Å based (1)
58- 63 F6.4 --- zCIV [1.5/5.1]?=0 Redshift,
CIV 1548Å based (1)
65- 70 F6.3 [10-7W] logL5100 [39.9/46.2]?=0 Monochromatic luminosity,
power-law continuum fit at 5100Å
in log erg/s units (1)
72- 77 F6.3 [10-7W] logL3000 [41.7/47.5]?=0 Monochromatic luminosity,
power-law continuum fit at 3000Å
in log erg/s units (1)
79- 84 F6.3 [10-7W] logL1350 [43.8/47.5]?=0 Monochromatic luminosity,
power-law continuum fit at 1350Å
in log erg/s units (1)
86- 89 F4.2 [Msun] logMBH-Ha [3.8/9.6]?=0 Virial BH mass,
Hα fit Eq. 5 (1)
91- 94 F4.2 [Msun] logMBH-Hb [6.4/9.8]?=0 Virial BH mass,
Hβ fit Eq. 4 (1)
96-100 F5.2 [Msun] logMBH-MgII [6.5/10.5]?=0 Virial BH mass,
MgII fit Eq. 3 (1)
102-106 F5.2 [Msun] logMBH-CIV [7/10.6]?=0 Virial BH mass,
CIV fit Eq. 2 (1)
108-111 F4.2 [Msun] logMBH-Ha2 [5/9.7]?=0 Virial BH mass,
Hα fit Eq. 1 and new (a,b) (1)
113-117 F5.2 [Msun] logMBH-MgII2 [6.7/10.1]?=0 Virial BH mass,
MgII fit Eq. 1 and new (a,b) (1)
119-123 F5.2 [Msun] logMBH-CIV2 [7/10.6]?=0 Virial BH mass,
CIV fit Eq. 1 and new (a,b) (1)
125-130 F6.3 [10-7W] logL-bHa [37.3/44.1]?=0 Line luminosity of broad
Hα, in log erg/s units (1)
132-136 F5.3 [10-7W] e_logL-bHa [0.009/1]?=0 Uncertainty of logLbHa (1)
138-143 F6.1 0.1nm EW-bHa [3.5/1019]?=0 Rest-frame equivalent
width of broad Hα, Angstroms (1)
145-149 F5.1 0.1nm e_EW-bHa [1.6/219.1]?=0 Uncertainty of EWbHa (1)
151-155 I5 km/s FWHM-bHa [1094/13799]?=0 FWHM of broad
Hα (1)
157-162 F6.3 [10-7W] logL-nHa [39.4/43.2]?=0 Line luminosity of
narrow Hα in log erg/s units (1)
164-168 F5.3 [10-7W] e_logL-nHa [0.01/1.1]?=0 Uncertainty of logLnHa (1)
170-174 F5.1 0.1nm EW-nHa [0.9/827.4]?=0 Rest-frame equivalent
width of narrow Hα, Angstroms (1)
176-179 F4.1 0.1nm e_EW-nHa [0.5/37]?=0 Uncertainty of EWnHa (1)
181-184 I4 km/s FWHM-nHa [198/1191]?=0 FWHM of narrow Hα (1)
186-191 F6.3 [10-7W] logL-NIIa [39/42.7]?=0 Line luminosity of
[NII]6549Å in log erg/s units (1)
193-198 F6.3 [10-7W] e_logL-NIIa [0.07/13.3]?=0 Uncertainty of
logLNIIa (1)
200-203 F4.1 0.1nm EW-NIIa [0.3/40.2]?=0 Rest-frame equivalent
width of [NII] 6549A, Angstroms (1)
205-208 F4.1 0.1nm e_EW-NIIa [0.3/26.1]?=0 Uncertainty of EWNIIa (1)
210-215 F6.3 [10-7W] logL-NIIb [39.4/43.2]?=0 Line luminosity of
[NII]6585Å, in log erg/s units (1)
217-221 F5.3 [10-7W] e_logL-NIIb [0.02/1.1]?=0 Uncertainty of logLNIIb (1)
223-227 F5.1 0.1nm EW-NIIb [1/119.2]?=0 Rest-frame equivalent
width of [NII]6585Å, Angstroms (1)
229-232 F4.1 0.1nm e_EW-NIIb [0.4/29.5]?=0 Uncertainty of EWNIIb (1)
234-239 F6.3 [10-7W] logL-SIIa [39.2/42.7]?=0 Line luminosity of
[SII] 6718Å, in log erg/s units (1)
241-245 F5.3 [10-7W] e_logL-SIIa [0.04/1.1]?=0 Uncertainty of logLSIIa (1)
247-250 F4.1 0.1nm EW-SIIa [0.3/69.5]?=0 Rest-frame equivalent
width of [SII]6718Å, Angstroms (1)
252-255 F4.1 0.1nm e_EW-SIIa [0.2/21]?=0 Uncertainty of EWSIIa (1)
257-262 F6.3 [10-7W] logL-SIIb [39.1/42.6]?=0 Line luminosity of
[SII] 6732Å, in log erg/s units (1)
264-268 F5.3 [10-7W] e_logL-SIIb [0.04/1.3]?=0 Uncertainty of logLSIIb (1)
270-273 F4.1 0.1nm EW-SIIb [0.4/54.5]?=0 Rest-frame equivalent
width of [SII]6732Å, Angstroms (1)
275-278 F4.1 0.1nm e_EW-SIIb [0.2/23.1]?=0 Uncertainty of EWSIIb (1)
280-285 F6.3 --- ch2-Ha [0.4/21.3]?=-1 Reduced χ^2 for
Hα emission line fits (1)
287-290 I4 --- Npix-Ha [210/264]?=-999 Number of good pixels,
6400-6800Å (1)
292-297 F6.3 --- SN-Ha [2/81.7]?=-1 Median S/N per pixel,
6400-6800Å (1)
299-305 F7.3 --- alpha-Ha [-3.6/6]?=-99 Power-law slope continuum
fit in Hα spectral region (1)
307-312 F6.3 [10-7W] logL-bHb [40.2/44.3]?=0 Line luminosity of
broad Hβ, in log erg/s units (1)
314-318 F5.3 [10-7W] e_logL-bHb [0.02/1.1]?=0 Uncertainty of logLbHb (1)
320-324 F5.1 0.1nm EW-bHb [3.6/210.1]?=0 Rest-frame equivalent
width of broad Hβ, Angstroms (1)
326-329 F4.1 0.1nm e_EW-bHb [1.3/90.4]?=0 Uncertainty of EWbHb (1)
331-335 I5 km/s FWHM-bHb [1098/15784]?=0 FWHM of broad Hβ (1)
337-342 F6.3 [10-7W] logL-nHb [39/43.3]?=0 Line luminosity of
narrow Hβ, in log erg/s units (1)
344-348 F5.3 [10-7W] e_logL-nHb [0.02/1.3]?=0 Uncertainty of logLnHb (1)
350-354 F5.1 0.1nm EW-nHb [0.2/177.2]?=0 Rest-frame equivalent
width of narrow Hβ, Angstroms (1)
356-359 F4.1 0.1nm e_EW-nHb [0.2/26]?=0 Uncertainty of WnHb (1)
361-364 I4 km/s FWHM-nHb [197/1184]?=0 FWHM of narrow Hβ (1)
366-371 F6.3 [10-7W] logL-OIIIa [37.8/43.6]?=0 Line luminosity of
[OIII]4959Å, in log erg/s units (1)
373-378 F6.3 [10-7W] e_logL-OIIIa [0.02/31]?=0 Uncertainty of logLOIIIa (1)
380-384 F5.1 0.1nm EW-OIIIa [0.1/746.4]?=0 Rest-frame equivalent
width of [OIII]4959Å, Angstroms (1)
386-389 F4.1 0.1nm e_EW-OIIIa [0.3/86]?=0 Uncertainty of WOIIIa (1)
391-396 F6.3 [10-7W] logL-OIIIb [38.3/44.1]?=0 Line luminosity of
[OIII]5007Å, in log erg/s units (1)
398-402 F5.3 [10-7W] e_logL-OIIIb [0.01/1.4]?=0 Uncertainty of
logLOIIIb (1)
404-409 F6.1 0.1nm EW-OIIIb [0.5/2262]?=0 Rest-frame equivalent
width of [OIII]5007Å, Angstroms (1)
411-414 F4.1 0.1nm e_EW-OIIIb [0.3/60]?=0 Uncertainty of WOIIIb (1)
416-421 F6.3 --- ch2-Hb [0.4/20.7]?=-1 Reduced χ^2 for
Hβ emission line fits (1)
423-426 I4 --- Npix-Hb [226/355]?=-999 Number of good pixels,
4700-5100Å (1)
428-433 F6.3 --- SN-Hb [2/80]?=-1 Median S/N per pixel,
4700-5100Å (1)
435-441 F7.3 --- alpha-Hb [-5/5.4]?=-99 Power-law slope continuum
fit in Hβ spectral region (1)
443-448 F6.3 [10-7W] logL-bMgII [41/45.4]?=0 Line luminosity of broad
MgII, in log erg/s units (1)
450-454 F5.3 [10-7W] e_logL-bMgII [0.03/1.1]?=0 Uncertainty of
logLbMgII (1)
456-461 F6.3 [10-7W] logLMgII [41.2/45.4]?=0 Total luminosity of
broad and narrow MgII,
in log erg/s units (1)
463-467 F5.1 0.1nm EW-bMgII [1.2/316]?=0 Rest-frame equivalent width
of broad MgII, Angstroms (1)
469-473 F5.1 0.1nm e_EW-bMgII [0.9/160.3]?=0 Uncertainty of WbMgII (1)
475-479 I5 km/s FWHM-bMgII [964/14866]?=0 FWHM of broad MgII (1)
481-486 F6.3 --- ch2-MgII [0.3/52.5]?=-1 Reduced χ^2 for
MgII emission line fits (1)
488-491 I4 --- Npix-MgII [479/792]?=-999 Number of good pixels,
2500-3000Å (1)
493-498 F6.3 --- SN-MgII [0/87.6]?=-1 Median S/N per pixel,
2500-3000Å (1)
500-506 F7.3 --- alpha-MgII [-6.2/7.2]?=-99 Power-law slope continuum
fit in MgII spectral region (1)
508-513 F6.3 [10-7W] logL-CIV [42.2/45.6]?=0 Line luminosity of CIV,
in log erg/s units (1)
515-519 F5.3 [10-7W] e_logL-CIV [0.02/1.1]?=0 Uncertainty of logLCIV (1)
521-525 F5.1 0.1nm EW-CIV [0.8/417.1]?=0 Rest-frame equivalent
width of CIV, Angstroms (1)
527-531 F5.1 0.1nm e_EW-CIV [0.5/214.3]?=0 Uncertainty of EWCIV (1)
533-537 I5 km/s FWHM-CIV [1094/16591]?=0 FWHM of broad CIV (1)
539-545 F7.3 --- ch2-CIV [0.3/348.5]?=-1 Reduced χ^2 for
CIV emission line fits (1)
547-550 I4 --- Npix-CIV [229/562]?=-999 Number of good pixels,
1450-1650Å (1)
552-557 F6.3 --- SN-CIV [0/67.2]?=-1 Median S/N per pixel,
1450-1650Å (1)
559-565 F7.3 --- alpha-CIV [-10.4/7.4]?=-99 Power-law slope
continuum fit in CIV spectral region (1)
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Note (1): The values are set to a null value if they were not fitted.
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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 This catalog
Huang et al. Paper III. 2023ApJS..264...52H 2023ApJS..264...52H Cat. J/ApJS/264/52
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 06-Mar-2020