J/ApJS/265/25 LAMOST Quasar Survey DR6-DR9 (Jin+, 2023)
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST)
Quasar Survey: quasar properties from Data Releases 6 to 9.
Jin J.-J., Wu X.-B., Fu Y., Yao S., Ai Y.-L., Feng X.-T., He Z.-Q.,
Ma Q.-C., Pang Y.-X., Zhu R., Zhang Y.-X., Yuan H.-L., Huo Z.-Y.
<Astrophys. J. Suppl. Ser., 265, 25 (2023)>
=2023ApJS..265...25J 2023ApJS..265...25J (SIMBAD/NED BibCode)
ADC_Keywords: QSOs; Surveys; Spectra, optical; Photometry, infrared; Redshifts;
Magnitudes, absolute; Cross identifications; X-ray sources;
Radio sources
Keywords: Quasars; Catalogs; Surveys
Abstract:
We report the fourth installment in the series of the Large Sky Area
Multi-Object Fiber Spectroscopic Telescope (LAMOST) quasar survey,
which includes quasars observed between 2017 September and 2021 June.
There are in total 13066 quasars reliably identified, of which
6685 are newly discovered that are not reported in the Sloan Digital
Sky Survey (SDSS) DR14 quasar catalog or Million Quasars catalog.
Because LAMOST does not provide accurate absolute flux calibration, we
recalibrate the spectra with the SDSS/Pan-STARRS1 multiband
photometric data. The emission-line properties of Ha, Hβ, MgII,
and CIV and the continuum luminosities are measured by fitting the
recalibrated spectra. We also estimate the single-epoch virial black
hole masses (MBH) using the derived emission-line and continuum
parameters. This is the first time that the emission-line and
continuum fluxes were estimated based on LAMOST recalibrated quasar
spectra. The catalog and spectra for these quasars are available
online. After the 9yr LAMOST quasar survey, there are in total
56175 identified quasars, of which 24127 are newly discovered. The
LAMOST quasar survey not only discovers a great number of new quasars
but also provides a database for investigating the spectral
variability of the quasars observed by both LAMOST and SDSS and
finding rare quasars, including changing-look quasars and broad
absorption line quasars.
Description:
LAMOST, also known as the Guoshoujing Telescope, is a quasi-meridian
reflection Schmidt telescope, located at Xinglong Observatory, China,
and has a 5° (diameter) field of view. The spectra were observed
under the low-resolution mode with a spectral resolution of
R∼1000-2000 over the blue channel (3700-5900Å) and a red channel
(5700-9000Å) wavelength.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 1869 13066 Quasars identified in LAMOST DR6-DR9
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Description of file:
datafile2.fits is the original catalog in FITS format.
See also:
VII/252 : SDSS-DR5 quasar catalog (Schneider+, 2007)
I/313 : LQRF: Large Quasar Reference Frame (Andrei+, 2009)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
V/146 : LAMOST DR1 catalogs (Luo+, 2015)
VIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)
II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)
VII/286 : SDSS quasar catalog, fourteenth data release (Paris+, 2018)
VII/285 : Gaia DR2 quasar and galaxy classification (Bailer-Jones+, 2019)
V/156 : LAMOST DR7 catalogs (Luo+, 2019)
IX/65 : XMM-Newton Serendipitous Source Catalogue 4XMM-DR11 (Webb+, 2022)
IX/68 : XMM-Newton Serendipitous Source Catalogue 4XMM-DR12 (Webb+, 2023)
VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
J/ApJS/95/1 : Atlas of Quasar Energy Distributions (Elvis+ 1994)
J/ApJS/116/1 : Old Stellar Populations. VI. Absorption-Line (Trager+ 1998)
J/MNRAS/353/211 : Method for selection of quasars (Carballo+, 2004)
J/ApJS/155/257 : NBC Quasar Candidate Catalog (Richards+, 2004)
J/AJ/130/381 : Blueshifted [O III] emission (Boroson+, 2005)
J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)
J/MNRAS/386/1605 : Luminous K-band selected QSOs from UKIDSS (Maddox+, 2008)
J/A+A/487/539 : A survey for quasars near quasars - QNQ (Worseck+, 2008)
J/ApJS/180/67 : Phot. selection of quasars from SDSS. II. (Richards+, 2009)
J/MNRAS/406/1583 : Quasar from SDSS and UKIDSS (Wu+, 2010)
J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)
J/ApJS/199/3 : The quasars MMT-BOSS pilot survey (Ross+, 2012)
J/ApJ/753/106 : Quasar variability with SDSS and POSS imaging (MacLeod+, 2012)
J/AJ/144/49 : Quasars from SDSS-DR7, WISE and UKIDSS surveys (Wu+, 2012)
J/AJ/145/159 : LAMOST. II. ugriz photometry of 526 new quasars (Huo+, 2013)
J/other/RAA/15.1438 : LAMOST new QSOs in M31 and M33 vicinity (Huo+, 2015)
J/AJ/151/24 : LAMOST quasar survey: quasar properties from DR1 (Ai+, 2016)
J/A+A/588/A103 : 2nd ROSAT all-sky survey (2RXS) source cat. (Boller+, 2016)
J/ApJ/821/33 : Broad Hβ emission line in Seyfert galaxies (Runco+, 2016)
J/A+A/611/A97 : Phot. quasar candidates in Stripe 82 (Pasquet-Itam+, 2018)
J/AJ/155/189 : LAMOST Quasar Survey: QSO properties from DR2&3 (Dong+, 2018)
J/A+A/615/A13 : Narrow line Seyfert 1 (NLS1) galaxies spectra (Schmidt+, 2018)
J/ApJ/874/8 : Follow-up sp. of SDSS changing-look QSOs (Macleod+, 2019)
J/ApJ/882/4 : SDSS-RM project: Hα, Hβ & MgII lines (Wang+, 2019)
J/ApJ/887/15 : Xinglong spectra of two changing-look SDSS AGNs (Wang+, 2019)
J/ApJS/240/6 : LAMOST Quasar Survey: Data Realeases 4 and 5 (Yao+, 2019)
J/ApJS/241/34 : The SDSS Reverberation Mapping (SDSS-RM) project (Shen+, 2019)
J/ApJS/249/17 : SDSS QSO DR14 spectral properties (Rakshit+, 2020)
J/A+A/644/A17 : Astrometrically-selected QSO candidates (Heintz+, 2020)
J/ApJS/254/6 : Finding QSOs behind the Galactic Plane. I. (Fu+, 2021)
J/ApJS/261/32 : Finding GPQs. II. Sp. obs. of |b|<20° QSOs (Fu+, 2022)
Byte-by-byte Description of file: catalog.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I9 --- ObsID [586507179/911409072] Unique
spectra ID in LAMOST database
11- 20 A10 "Y/M/D" ObsDate Target observation date
22- 41 A20 --- LAMOST LAMOST designation
(JHHMMSS.ss+DDMMSS.ss) (NAME)
43- 52 F10.6 deg RAdeg Right ascension (J2000) (RA)
54- 63 F10.6 deg DEdeg [-7.2/70] Declination (J2000) (DEC)
65- 69 I5 d LMJD [58016/59377] Local modified Julian
day of observation (1)
71- 89 A19 --- planID Spectroscopic plan identification (1)
91- 92 I2 --- spID [1/16] Spectrograph identification
(1)
94- 96 I3 --- fiberID [1/250] Spectroscopic fiber number
(1)
98- 105 F8.6 --- z [0/4.44] Redshift based on visual
inspection (Z_VI)
107 I1 --- q_z [0/1] ZWARNING flag based on visual
inspection (1=not robust) (ZWARNING)
109 I1 --- Flag [0/1]? Flag of quasar candidate
selection (SOURCE_FLAG) (2)
111- 122 F12.6 mag iMAG [-32.9/-16.7]?=- Absolute i-band
magnitude K-corrected to z=2, Mi
(z=2) (Mi_Z2) (3)
124- 125 I2 --- Nsp [1/30] Number of spectroscopic
observations (NSPECOBS) (4)
127- 134 F8.4 --- SNR [0/868] Median S/N per pixel of the
spectrum (SNR_SPEC)
143 I1 --- BAL [0/1] Flag of broad absorption
features (BAL_FLAG) (5)
145- 158 F14.6 10-17mW/m2 FbHa [2.2e-5/631480]?=- Flux of broad
Hα in 10-17erg/cm2/s
(FLUXBROADHA)
160- 171 F12.6 10-17mW/m2 e_FbHa [1.9/18925]?=- FbHa uncertainty
(ERRFLUXBROAD_HA)
173- 184 F12.6 km/s FWHMbHa [2801/14360]?=- FWHM of broad
Hα (FWHMBROADHA)
186- 197 F12.6 km/s e_FWHMbHa [0.02/3861]?=- FWHMbHa uncertainty
(ERRFWHMBROAD_HA)
199- 210 F12.6 0.1nm EWbHa [7e-6/50297]?=- Rest-frame EW of
broad Hα in Å (EWBROADHA)
212- 223 F12.6 0.1nm e_EWbHa [0.06/17026]?=- EWbHa uncertainty
(ERREWBROAD_HA)
225- 237 F13.6 10-17mW/m2 FnHa [2.9/790606]?=- Flux of narrow
Hα in 10-17erg/cm2/s
(FLUXNARROWHA)
239- 250 F12.6 10-17mW/m2 e_FnHa [0.6/21491]?=- FnHa uncertainty
(ERRFLUXNARROW_HA)
252- 263 F12.6 km/s FWHMnHa [351/902]?=- FWHM of narrow
Hα (FWHMNARROWHA)
265- 276 F12.6 km/s e_FWHMnHa [0.0005/263]?=- FWHMnHa uncertainty
(ERRFWHMNARROW_HA)
278- 289 F12.6 0.1nm EWnHa [0.3/57841]?=- Rest-frame EW of
narrow Hα in Å
(EWNARROWHA)
291- 302 F12.6 0.1nm e_EWnHa [0.03/2241]?=- EWnHa uncertainty
(ERREWNARROW_HA)
304- 315 F12.6 10-17mW/m2 FNII [0.07/69512]?=- Flux of
[NII]λ6584 in
10-17erg/cm2/s (FLUXNII6584)
317- 328 F12.6 10-17mW/m2 e_FNII [0.3/5777]?=- FNII uncertainty
(ERRFLUXNII_6584)
330- 341 F12.6 km/s FWHMNII [351/902]?=- FWHM of
[NII]λ6584 (FWHMNII6584)
343- 354 F12.6 km/s e_FWHMNII [0.0005/263]?=- FWHMNII uncertainty
(ERRFWHMNII_6584)
356- 367 F12.6 0.1nm EWNII [0.02/546]?=- Rest-frame EW of
[NII]λ6584 in Å
(EWNII6584)
369- 380 F12.6 0.1nm e_EWNII [0.02/565]?=- EWNII uncertainty
(ERREWNII_6584)
382- 392 E11.6 10-17mW/m2 FSII6716 [0.04/1.5e+13]?=- Flux of
[SII]λ6716 in
10-17erg/cm2/s (FLUXSII6716)
394- 404 E11.6 10-17mW/m2 e_FSII6716 [0.3/1.9e+13]?=- FSII6716
uncertainty (ERRFLUXSII_6716)
406- 417 F12.6 km/s FWHMSII6716 [351/902]?=- FWHM of
[SII]λ6716 (FWHMSII6716)
419- 430 F12.6 km/s e_FWHMSII6716 [0.0005/263]?=- FWHMSII6716
uncertainty (ERRFWHMSII_6716)
432- 442 E11.6 0.1nm EWSII6716 [0.01/8.2e+11]?=- Rest-frame EW of
[SII]λ6716 in Å
(EWSII6716)
444- 454 E11.6 0.1nm e_EWSII6716 [0.01/1.3e+12]?=- EWSII6716
uncertainty (ERREWSII_6716)
456- 468 F13.6 10-17mW/m2 FSII6731 [0.2/744892]?=- Flux of
[SII]λ6731 in
10-17erg/cm2/s (FLUXSII6731)
470- 480 E11.6 10-17mW/m2 e_FSII6731 [0.3/1.9e+13]?=- FSII6731
uncertainty (ERRFLUXSII_6731)
482- 493 F12.6 km/s FWHMSII6731 [351/902]?=- FWHM of
[SII]λ6731 (FWHMSII6731)
495- 506 F12.6 km/s e_FWHMSII6731 [0.0005/263]?=- FWHMSII6731
uncertainty (ERRFWHMSII_6731)
508- 519 F12.6 0.1nm EWSII6731 [0.05/42790]?=- Rest-frame EW of
[SII]λ6731 in Å
(EWSII6731)
521- 533 F13.6 0.1nm e_EWSII6731 [0.01/143082]?=- EWSII6731
uncertainty (ERREWSII_6731)
535- 539 I5 --- NHa [138/298]?=- Number of good pixels
for the rest-frame 6350-6800Å
(LINENPIXHA)
541- 552 F12.6 --- SNHa [0.04/160]?=- Median S/N per pixel
for the rest-frame 6350-6800Å
(LINEMEDSN_HA)
563- 565 I3 --- q_Ha [-1/0]? Flag for the quality in
Hα fitting (0=acceptable)
(LINEFLAGHA) (6)
567- 579 F13.6 10-17mW/m2 FbHb [1/152520]?=- Flux of broad Hβ
in 10-17erg/cm2/s
(FLUXBROADHB)
581- 592 F12.6 10-17mW/m2 e_FbHb [0.5/1338]?=- FbHb uncertainty
(ERRFLUXBROAD_HB)
594- 605 F12.6 km/s FWHMbHb [2796/12086]?=- FWHM of broad
Hβ (FWHMBROADHB)
607- 618 F12.6 km/s e_FWHMbHb [0.02/3565]?=- FWHMbHb uncertainty
(ERRFWHMBROAD_HB)
620- 632 F13.6 0.1nm EWbHb [0.1/524650]?=- Rest-frame EW of
broad Hβ in Å (EWBROADHB)
634- 646 F13.6 0.1nm e_EWbHb [0.01/199204]?=- EWbHb uncertainty
(ERREWBROAD_HB)
648- 659 F12.6 10-17mW/m2 FnHb [0.2/8127]?=- Flux of narrow
Hβ in 10-17erg/cm2/s
(FLUXNARROWHB)
661- 672 F12.6 10-17mW/m2 e_FnHb [0.1/700]?=- FnHb uncertainty
(ERRFLUXNARROW_HB)
674- 685 F12.6 km/s FWHMnHb [166/904]?=- FWHM of narrow Hβ
(FWHMNARROWHB)
687- 698 F12.6 km/s e_FWHMnHb [0.0003/356]?=- FWHMnHb uncertainty
(ERRFWHMNARROW_HB)
700- 711 F12.6 0.1nm EWnHb [0.05/904]?=- Rest-frame EW of
narrow Hβ in Å
(EWNARROWHB)
713- 724 F12.6 0.1nm e_EWnHb [0.01/1745]?=- EWnHb uncertainty
(ERREWNARROW_HB)
726- 736 E11.6 10-17mW/m2 FOIII [4.2e-10/1.3e+13]?=- Flux of
[OIII]λ5007 in
10-17erg/cm2/s (FLUXOIII5007)
738- 748 E11.6 10-17mW/m2 e_FOIII [0.3/8.3e+12]?=- FOIII uncertainty
(ERRFLUXOIII_5007)
750- 761 F12.6 km/s FWHMOIII [164/5338]?=- FWHM of
[OIII]λ5007 (FWHMOIII5007)
763- 774 F12.6 km/s e_FWHMOIII [0.02/2163]?=- FWHMOIII uncertainty
(ERRFWHMOIII_5007)
776- 786 E11.6 0.1nm EWOIII [6.2e-11/5.8e+11]?=- Rest-frame EW
of [OIII]λ5007 in Å
(EWOIII5007)
788- 798 E11.6 0.1nm e_EWOIII [0.008/6.2e+11]?=- EWOIII
uncertainty (ERREWOIII_5007)
800- 804 I5 --- NHb [242/449]?=- Number of good pixels
for the rest-frame 4600-5100Å
(LINENPIXHB)
806- 817 F12.6 --- SNHb [0.001/828]?=- Median S/N per pixel
for the rest-frame 4600-5100Å
(LINEMEDSN_HB)
828- 830 I3 --- q_Hb [-1/0]? Flag for the quality in
Hβ fitting (0=acceptable)
(LINEFLAGHB) (6)
832- 842 E11.6 10-17mW/m2 FbMgII [0.7/2.7e+11]?=- Flux of the broad
MgII in 10-17erg/cm2/s
(FLUXBROADMGII)
844- 854 E11.6 10-17mW/m2 e_FbMgII [0.3/2.8e+11]?=- FbMgII uncertainty
(ERRFLUXBROAD_MGII)
856- 867 F12.6 km/s FWHMbMgII [2819/7164]?=- FWHM of the broad
MgII (FWHMBROADMGII)
869- 880 F12.6 km/s e_FWHMbMgII [0.006/3416]?=- FWHMbMgII
uncertainty (ERRFWHMBROAD_MGII)
882- 892 E11.6 0.1nm EWbMgII [0.04/2.1e+10]?=- Rest-frame EW of
the broad MgII in Å
(EWBROADMGII)
894- 904 E11.6 0.1nm e_EWbMgII [0.01/2.1e+10]?=- EWbMgII
uncertainty (ERREWBROAD_MGII)
906- 918 F13.6 10-17mW/m2 FnMgII [0.2/535203]?=- Flux of the narrow
MgII in 10-17erg/cm2/s
(FLUXNARROWMGII)
920- 932 F13.6 10-17mW/m2 e_FnMgII [0.007/414619]?=- FnMgII
uncertainty (ERRFLUXNARROW_MGII)
934- 945 F12.6 km/s FWHMnMgII [349/908]?=- FWHM of the narrow
MgII (FWHMNARROWMGII)
947- 958 F12.6 km/s e_FWHMnMgII [6.6e-5/275]?=- FWHMnMgII
uncertainty (ERRFWHMNARROW_MGII)
960- 971 F12.6 0.1nm EWnMgII [0.008/18304]?=- Rest-frame EW of
the narrow MgII in Å
(EWNARROWMGII)
973- 984 F12.6 0.1nm e_EWnMgII [0.0008/46257]?=- EWnMgII
uncertainty (ERREWNARROW_MGII)
986- 990 I5 --- NMgII [16/311]?=- Number of good pixels
for the rest-frame 2700-2900Å
(LINENPIXMGII)
992- 1003 F12.6 --- SNMgII [-0.4/98]?=- Median S/N per pixel
for the rest-frame 2700-2900Å
(LINEMEDSN_MGII)
1014- 1016 I3 --- q_MgII [-1/0]? Flag for the quality in
MgII fitting (0=acceptable)
(LINEFLAGMGII) (6)
1018- 1028 E11.6 10-17mW/m2 FCIV [3.7/1.5e+7]?=- Flux of the whole
CIV in 10-17erg/cm2/s (FLUX_CIV)
1030- 1040 E11.6 10-17mW/m2 e_FCIV [0.2/3.6e+11]?=- FCIV uncertainty
(ERRFLUXCIV)
1042- 1053 F12.6 km/s FWHMCIV [352/15975]?=- FWHM of the whole
CIV (FWHM_CIV)
1055- 1066 F12.6 km/s e_FWHMCIV [0.03/6174]?=- FWHMCIV uncertainty
(ERRFWHMCIV)
1068- 1080 F13.6 0.1nm EWCIV [0.1/333221]?=- Rest-frame EW of
the whole CIV in Å (EW_CIV)
1082- 1092 E11.6 0.1nm e_EWCIV [0.006/8.6e+9]?=- EWCIV uncertainty
(ERREWCIV)
1094- 1106 F13.6 10-17mW/m2 FbCIV [1.7/328242]?=- Flux of the broad
CIV in 10-17erg/cm2/s
(FLUXBROADCIV)
1108- 1118 E11.6 10-17mW/m2 e_FbCIV [0.3/3.4e+11]?=- FbCIV uncertainty
(ERRFLUXBROAD_CIV)
1120- 1131 F12.6 km/s FWHMbCIV [2782/15975]?=- FWHM of the broad
CIV (FWHMBROADCIV)
1133- 1144 F12.6 km/s e_FWHMbCIV [0.06/4743]?=- FWHMbCIV uncertainty
(ERRFWHMBROAD_CIV)
1146- 1158 F13.6 0.1nm EWbCIV [0.04/165936]?=- Rest-frame EW of
the broad CIV in Å (EWBROADCIV)
1160- 1170 E11.6 0.1nm e_EWbCIV [0.007/8.1e+9]?=- EWbCIV
uncertainty (ERREWBROAD_CIV)
1172- 1182 E11.6 10-17mW/m2 FnCIV [0.1/1.5e+7]?=- Flux of the narrow
CIV in 10-17erg/cm2/s
(FLUXNARROWCIV)
1184- 1194 E11.6 10-17mW/m2 e_FnCIV [0.1/3.9e+9]?=- FnCIV uncertainty
(ERRFLUXNARROW_CIV)
1196- 1207 F12.6 km/s FWHMnCIV [349/908]?=- FWHM of the narrow CIV
(FWHMNARROWCIV)
1209- 1220 F12.6 km/s e_FWHMnCIV [0.0002/273]?=- FWHMnCIV
uncertainty (ERRFWHMNARROW_CIV)
1222- 1234 F13.6 0.1nm EWnCIV [0.006/332201]?=- Rest-frame EW of
the narrow CIV in Å
(EWNARROWCIV)
1236- 1246 E11.6 0.1nm e_EWnCIV [0.003/1.6e+8]?=- EWnCIV
uncertainty (ERREWNARROW_CIV)
1248- 1252 I5 --- NCIV [14/544]?=- Number of good pixels
for the rest-frame 1500-1700Å
(LINENPIXCIV)
1254- 1265 F12.6 --- SNCIV [-0.06/77]?=- Median S/N per pixel
for the rest-frame 1500-1700Å
(LINEMEDSN_CIV)
1276- 1278 I3 --- q_CIV [-1/2]? Flag for the quality in
CIV fitting (0=acceptable)
(LINEFLAGCIV) (6)
1280- 1288 F9.6 --- alphaL1 [-5/3] Wavelength power-law index
from blueward of 4661Å
(ALPHALAMBDA1)
1290- 1298 F9.6 --- alphaL2 [-5/3] Wavelength power-law index
from redward of 4661Å
(ALPHALAMBDA2)
1300- 1309 F10.6 --- FeOpNorm [0/226] The normalization applied
to the optical FeII template
(Feopnorm)
1311- 1319 F9.6 --- FeOpShift [-0.01/0.01] The Gaussian FWHM
applied to the optical FeII
template (Feopshift)
1321- 1330 F10.4 --- FeOpFWHM [1200/10000] The wavelength shift
applied to the optical FeII
template (FeopFWHM)
1332- 1341 F10.6 --- FeUVNorm [0/388] The normalization applied
to the ultraviolet FeII template
(Feuvnorm)
1343- 1351 F9.6 --- FeUVShift [-0.01/0.01] The Gaussian FWHM
applied to the ultraviolet FeII
template (Feuvshift)
1353- 1362 F10.4 --- FeUVFWHM [1200/10000] The wavelength shift
applied to the ultraviolet FeII
template (FeuvFWHM)
1364- 1375 F12.6 [10-7W] logL1350 [43.5/48.5]?=- Monochromatic
luminosity at 1350Å in erg/s
(LOGL1350)
1377- 1388 F12.6 [10-7W] e_logL1350 [7e-5/0.3]?=- logL1350 uncertainty
(ERR_LOGL1350)
1390- 1401 F12.6 [10-7W] logL3000 [39.8/47.2]?=- Monochromatic
luminosity at 3000Å in erg/s
(LOGL3000)
1403- 1414 F12.6 [10-7W] e_logL3000 [6e-5/2]?=- logL3000 uncertainty
(ERR_LOGL3000)
1416- 1427 F12.6 [10-7W] logL5100 [41.2/46]?=- Monochromatic
luminosity at 5100Å in erg/s
(LOGL5100)
1429- 1440 F12.6 [10-7W] e_logL5100 [0.0001/0.3]?=- logL5100
uncertainty (ERR_LOGL5100)
1442- 1453 F12.6 [Msun] logBHHb [7/9.6]?=- Virial BH mass based on
Hβ (LOGBH_HB)
1455- 1466 F12.6 [Msun] logBHMgII [6.3/10]?=- Virial BH mass based on
MgII (LOGBH_MGII)
1468- 1479 F12.6 [Msun] logBHCIV [6.5/10.6]?=- Virial BH mass based
on CIV (LOGBH_CIV)
1481- 1498 A18 --- SDSS Name of the quasar in the SDSS
quasar catalog DR14Q;
superseded by VII/289
(HHMMSS.ss+DDMMSS.s; J2000)
(SDSS_NAME) (7)
1500- 1503 A4 --- --- [2RXS]
1505- 1520 A16 --- 2RXS Name of the object in the second
ROSAT all-sky survey point-source
catalog (Boller+ 2016,
J/A+A/588/A103 ; JHHMMSS.s+DDMMSS)
( 2RXS_NAME) (8)
1522- 1533 F12.6 ct Cts [3/1073]?=- Background-corrected
source counts in 0.1-2.4keV from
2RXS source catalog ( 2RXS_CTS)
1535- 1546 F12.6 ct e_Cts [2/34]?=- Cts uncertainty
( 2RXS_ECTS)
1548- 1558 E11.6 s 2RXSExp [104/2725]?=- Source exposure time
from 2RXS (RXS2_EXPTIME)
1560- 1571 F12.6 arcsec Sep2RXS [0.3/30]?=- LAMOST-2RXS separation
(LM2RXSSEP)
1573- 1576 A4 --- --- [4XMM]
1578- 1593 A16 --- 4XMM Name of the object in XMM-Newton
Serendipitous Source Catalog
(JHHMMSS.s+DDMMSS) ( 4XXM_NAME) (9)
1595- 1605 E11.6 mW/m2 F0.2-12keV [4.8e-15/8.2e-11]?=- Flux in
0.2-12.0keV band from 4XMM-DR11 in
erg/s/cm2 ( 4XXM_FLUX)
1607- 1617 E11.6 mW/m2 e_F0.2-12keV [1.7e-15/1.7e-13]?=- F0.2-12keV
uncertainty ( 4XXM_FERR)
1619- 1630 F12.6 arcsec Sep4XMM [0.004/3]?=- LAMOST-4XMM separation
(LM4XXMSEP)
1632- 1643 F12.6 mJy Fpk [0.7/7710]?=- FIRST peak flux
density at 20cm (FPEAK)
1645- 1656 F12.6 arcsec SepFIRST [0.008/5]?=- LAMOST-FIRST
separation (LMFIRSTSEP) (10)
1658- 1667 F10.4 mag gmag [12.9/25.2]?=- SDSS (or Pan-STARRS1
PSF) g magnitude (g_mag)
1669- 1678 F10.4 mag e_gmag [0/12]?=- Uncertainty on the gmag
(ERRgmag)
1680- 1689 F10.4 mag rmag [12.8/25]?=- SDSS (or Pan-STARRS1)
r PSF magnitude (r_mag)
1691- 1700 F10.4 mag e_rmag [0/10.5]?=- Uncertainty on the rmag
(ERRrmag)
1702- 1711 F10.4 mag imag [12.6/21.6]?=- SDSS (or
Pan-STARRS1) i PSF magnitude (i_mag)
1713- 1722 F10.4 mag e_imag [0/1.6]?=- Uncertainty on the imag
(ERRimag)
1724- 1734 F11.5 mag zmag [13/23]?=- SDSS (or Pan-STARRS1) z
PSF magnitude (z_mag)
1736- 1746 F11.5 mag e_zmag [0.0003/3]?=- Uncertainty on the
zmag (ERRzmag)
1748- 1749 I2 --- f_mag [-1/1]? Flag of PSF magnitude
(MAG_FLAG) (11)
1751- 1759 F9.3 mag W1mag [9.2/18.2]?=- Instrumental
profile-fit photometry magnitude,
WISE W1 band (W1_mag)
1761- 1769 F9.3 mag e_W1mag [0.02/0.4]?=- Uncertainty on the
W1mag (ERRW1mag)
1771- 1779 F9.3 mag W2mag [8.2/17.5]?=- Instrumental
profile-fit photometry magnitude,
WISE W2 band (W2_mag)
1781- 1789 F9.3 mag e_W2mag [0.018/0.6]?=- Uncertainty on the
W2mag (ERRW2mag)
1791- 1799 F9.3 mag W3mag [5.3/13.4]?=- Instrumental
profile-fit photometry magnitude,
WISE W3 band (W3_mag)
1801- 1809 F9.3 mag e_W3mag [0.014/0.6]?=- Uncertainty on the
W3mag (ERRW3mag)
1811- 1819 F9.3 mag Ymag [14.9/20.5]?=- WISE Y AperMag3
magnitude (2" aperture diameter)
(Y_mag)
1821- 1829 F9.3 mag e_Ymag [0.004/0.3]?=- Uncertainty on the
Ymag (ERRYmag)
1831- 1839 F9.3 mag Jmag [14.5/19.7]?=- WISE J AperMag3
magnitude (2" aperture diameter)
(J_mag)
1841- 1849 F9.3 mag e_Jmag [0.003/0.3]?=- Uncertainty on the
Jmag (ERRJmag)
1851- 1859 F9.3 mag Kmag [12.8/18.6]?=- WISE K AperMag3
magnitude (2" aperture diameter)
(K_mag)
1861- 1869 F9.3 mag e_Kmag [0.003/0.3]?=- Uncertainty on the
Kmag (ERRKmag)
--------------------------------------------------------------------------------
Note (1): These four numbers are unique for each spectrum named in the format
of spec-LMJD-planID_spID-fiberID.fits
Note (2): Flag as follows:
1 = the quasar was selected by its infrared-optical color, data-mining
algorithms, multiwavelength algorithms, or other serendipitous algorithms
0 = the object is not included in the LAMOST quasar survey candidate sample
but identified as a quasar
Note (3): The K-corrected i-band absolute magnitude Mi (z=2), normalized
at z=2 following Richards+ 2006, J/AJ/131/2766
Note (4): Number of spectroscopic observations for the quasar. When there is
more than one observation for the object, the line properties are
obtained from only one of the observations in which the S/N is highest.
Note (5): Flag of broad absorption features as follows:
1 = broad absorption features are present in MgII and/or CIV.
Note (6): Flag indicates reliability of the emission-line-fitting results in
the emission line region upon visual inspections. Code as follows:
0 = acceptable
-1 = unacceptable
--- = the line is not measured owing to too few good pixels in the
fitting region.
Note (7): The LAMOST DR6-DR9 quasar catalog was cross-correlated with the
SDSS quasar catalog (DR14Q; Paris+ 2018, VII/286; superseded by V/154)
using a matching radius of 3". 10 names from the column SDSSo in DR14Q
have been corrected into the correct SDSS format by CDS.
Note (8): Name of the object in the second ROSAT all-sky survey point-source
catalog (2RXS; Boller+ 2016, J/A+A/588/A103). The LAMOST DR6-DR9
quasar catalog was cross-correlated with 2RXS using a matching radius
of 30". The nearest point source in 2RXS was chosen.
Note (9): The LAMOST DR6-DR9 quasar catalog was cross-correlated with the
XMM-Newton Serendipitous Source Catalog (4XMM-DR11; Webb+ 2020, IX/65)
using a matching radius of 3".
Note (10): The LAMOST DR6-DR9 quasar catalog was cross-correlated with the
FIRST survey catalog (see VIII/92) using a matching radius of 5".
Note (11): Flag as follows:
1 = the PSF magnitudes are given by SDSS
0 = the PSF magnitudes are given by Pan-STARRS
-1 = the quasars do not have reliable photometric information
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Ai et al. Paper I. 2016AJ....151...24A 2016AJ....151...24A Cat. J/AJ/151/24
Dong et al. Paper II. 2018AJ....155..189D 2018AJ....155..189D Cat. J/AJ/155/189
Yao et al. Paper III. 2019ApJS..240....6Y 2019ApJS..240....6Y Cat. J/ApJS/240/6
(End) Emmanuelle Perret [CDS] 03-May-2023