J/ApJS/240/6/catalogQuasars identified in LAMOST DR4 and DR5planIDSpectroscopic plan identification (1)obs.fieldcharFWHMMgII[134.9/16576]? FWHM of the whole MgII emission line (FWHM_MGII)km/sspect.line.widthdoublenullablee_FWHMMgII[-1/4756]? FWHMMgII uncertaintykm/sstat.errordoublenullableEWMgII[-5699/1.8e+18]? Rest-frame equivalent width of the whole MgII in {AA} (EW_MGII)0.1nmspect.line.eqWidthdoublenullablee_EWMgII[-1/1.8e+17]? EWMgII uncertainty0.1nmstat.errordoublenullableFWHMbMgII[202/26186]? FWHM of the whole broad MgII (FWHM_BROAD_MGII)km/sspect.line.widthdoublenullablee_FWHMbMgII[-1/15925]? FWHMbMgII uncertaintykm/sstat.errordoublenullableEWbMgII[-5276/1.6e+18]? Rest-frame equivalent width of the whole broad MgII in {AA} (EW_BROAD_MGII)0.1nmspect.line.eqWidthdoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMedSNMgII[0/124]? Median S/N per pixel for the rest-frame 2700-2900{AA} (LINE_MED_SN_MGII)stat.snrdoublenullableq_MgII[-9999/0]? Flag for the quality in MgII fitting (0=acceptable) (LINE_FLAG_MGII) (5)meta.code.qualintnullablef_logL1350i: -infinitymeta.codechare_F0.2-12keV[2e-15/1.9e-13]? F0.2-12keV uncertaintymW.m**-2stat.errordoublenullableSep3XMM[0.006/3]? LAMOST-3XMM separation (LM_3XMM_SEP)arcsecpos.angDistancedoublenullableFpk[0.98/14775]? FIRST peak flux density at 20cm (FPEAK)mJyphot.flux.density;em.radio.750-1500MHzdoublenullableSepFIRST[0.0003/5]? LAMOST-FIRST separation (LM_FIRST_SEP)arcsecpos.angDistancedoublenullableFIRSTDisplay data from FIRST (VIII/92) within 5"meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlcharObsDateTarget observation datetime.epoch;obsnullableindexedObsID[353601018/584816178] Unique spectra ID in LAMOST databasemeta.id;obslongLAMOSTLAMOST designation (JHHMMSS.ss+DDMMSS.ss) (NAME)meta.id;meta.maincharRAJ2000Right ascension (J2000) (RA)degpos.eq.ra;meta.mainindexedDEJ2000[-6.9/60.4] Declination (J2000) (DEC)degpos.eq.dec;meta.mainindexedLMJD[57279/57920] Local modified Julian day of observation (1)dtime.epoch;obsintspID[1/16] Spectrograph identification (1)meta.id;instrintfiberID[1/250] Spectroscopic fiber number (1)meta.noteintz[0.001/5.4] Redshift based on visual inspection (Z_VI)src.redshiftfloatq_z[0/1] ZWARNING flag based on visual inspection (1=not robust) (ZWARNING)meta.code.qual;src.redshiftintFlag[0/1110] Flag of quasar candidate selection (SOURCE_FLAG) (2)meta.codeintiMAG[-33.8/-9.4]? Absolute i-band magnitude K-corrected to z=2, M_i_(z=2) (Mi_Z2) (3)magphys.magAbs;em.opt.IdoublenullableNsp[1/13] Number of spectroscopic observations (NSPECOBS) (4)meta.numberintSNR[0/89]? Median S/N per pixel in the wavelength regions of [4000-5700]{AA} and [6200,9000]{AA} (SNR_SPEC)stat.snrdoublenullableFWHMbHa[890/15499]? FWHM of broad H{alpha} (FWHM_BROAD_HA)km/sspect.line.widthdoublenullablee_FWHMbHa[-1/3935]? FWHMbHa uncertaintykm/sstat.errordoublenullableEWbHa[-8428/1.2e+7]? Rest-frame EW of broad H{alpha} in {AA} (EW_BROAD_HA)0.1nmspect.line.eqWidthdoublenullablee_EWbHa[-1/651.7]? EWbHa uncertainty0.1nmstat.errordoublenullableFWHMnHa[0/1268]? FWHM of narrow H{alpha} (FWHM_NARROW_HA)km/sspect.line.widthdoublenullablee_FWHMnHa[-1/367.5]? FWHMnHa uncertaintykm/sstat.errordoublenullableEWnHa[0/848.1]? Rest-frame EW of narrow H{alpha} in {AA} (EW_NARROW_HA)0.1nmspect.line.eqWidthdoublenullablee_EWnHa[-1/460.4]? EWnHa uncertainty0.1nmstat.errordoublenullableEWNII[-683/703.1]? Rest-frame EW of [NII]{lambda}6584 in {AA} (EW_NII_6584)0.1nmspect.line.eqWidthdoublenullablee_EWNII[-1/187.6]? EWNII uncertainty0.1nmstat.errordoublenullableEWSII6716[0/344.2]? Rest-frame EW of [SII]{lambda}6716 in {AA} (EW_SII_6716)0.1nmspect.line.eqWidthdoublenullablee_EWSII6716[-1/54.1]? EWSII6716 uncertainty0.1nmstat.errordoublenullableEWSII6731[0/2.7e+6]? Rest-frame EW of [SII]{lambda}6731 in {AA} (EW_SII_6731)0.1nmspect.line.eqWidthdoublenullablee_EWSII6731[-1/88]? EWSII6731 uncertainty0.1nmstat.errordoublenullableEWFeHa[-2765/1753]? Rest-frame equivalent width of Fe within 6000-6500{AA} in {AA} (EW_FE_HA)0.1nmspect.line.eqWidthdoublenullableNHa[209/241]? Number of good pixels for the rest-frame 6400-6765{AA} (LINE_NPIX_HA)meta.numberfloatnullableMedSNHa[-0/193]? Median S/N per pixel for the rest-frame 6400-6765{AA} (LINE_MED_SN_HA)stat.snrdoublenullableq_Ha[-9999/0]? Flag for the quality in H{alpha} fitting (0=reliable) (LINE_FLAG_HA) (5)meta.code.qualintnullableFWHMbHb[877/14998]? FWHM of broad H{beta} (FWHM_BROAD_HB)km/sspect.line.widthdoublenullablee_FWHMbHb[-1/8968]? FWHMbHb uncertaintykm/sstat.errordoublenullableEWbHb[-834730/2.8e+17]? Rest-frame EW of broad H{beta} in {AA} (EW_BROAD_HB)0.1nmspect.line.eqWidthdoublenullablee_EWbHb[-1/3.1e+16]? EWbHb uncertainty0.1nmstat.errordoublenullableFWHMnHb[0/897]? FWHM of narrow H{beta} (FWHM_NARROW_HB)km/sspect.line.widthdoublenullablee_FWHMnHb[-1/669]? FWHMnHb uncertaintykm/sstat.errordoublenullableEWnHb[0/5.4e+16]? Rest-frame EW of narrow H{beta} in {AA} (EW_NARROW_HB)0.1nmspect.line.eqWidthdoublenullablee_EWnHb[-1/1.6e+16]? EWnHb uncertainty0.1nmstat.errordoublenullableFWHMOIII[0/3132]? FWHM of [OIII]{lambda}5007 (FWHM_OIII_5007)km/sspect.line.widthdoublenullablee_FWHMOIII[-1/354]? FWHMOIII uncertaintykm/sstat.errordoublenullableEWOIII[0/4e+17]? Rest-frame EW of [OIII]{lambda}5007 in {AA} (EW_OIII_5007)0.1nmspect.line.eqWidthdoublenullablee_EWOIII[-1/24]? EWOIII uncertainty0.1nmstat.errordoublenullableEWFeHb[-1.5e+14/1.9e+17]? Rest-frame equivalent width of Fe within 4435-4685{AA} in {AA} (EW_FE_HB)0.1nmspect.line.eqWidthdoublenullableNHb[179/180]? Number of good pixels for the rest-frame 4750-4950{AA} (LINE_NPIX_HB)meta.numberfloatnullableMedSNHb[0/100]? Median S/N per pixel for the rest-frame 4750-4950{AA} (LINE_MED_SN_HB)stat.snrdoublenullableq_Hb[-9999/0]? Flag for the quality in H{beta} fitting (0=acceptable) (LINE_FLAG_HB) (5)meta.code.qualintnullablee_EWbMgII[-1/1.8e+17]? EWbMgII uncertainty0.1nmstat.errordoublenullableFWHMbMgII2[202/26186]? FWHM of the broad MgII{lambda}2796 (FWHM_BROAD_MGII_2796)km/sspect.line.widthdoublenullablee_FWHMbMgII2[-1/18770]? FWHMbMgII2 uncertaintykm/sstat.errordoublenullableFWHMnMgII2[0/897]? FWHM of the narrow MgII{lambda}2796 (FWHM_NARROW_MGII_2796)km/sspect.line.widthdoublenullablee_FWHMnMgII2[-1/97551]? FWHMnMgII2 uncertaintykm/sstat.errordoublenullableEWFeMgII[-876/4.1e+19]? Rest-frame equivalent width of Fe within 2200-3090{AA} in {AA} (EW_FE_MGII)0.1nmspect.line.eqWidthdoublenullableNMgII[310/311]? Number of good pixels for the rest-frame 2700-2900{AA} (LINE_NPIX_MGII)meta.numberfloatnullableFWHMCIV[215.9/36566]? FWHM of the whole CIV (FWHM_CIV)km/sspect.line.widthdoublenullablee_FWHMCIV[-1/6447]? FWHMCIV uncertaintykm/sstat.errordoublenullableEWCIV[-3.9e+6/6159]? Rest-frame EW of the whole CIV in {AA} (EW_CIV)0.1nmspect.line.eqWidthdoublenullablee_EWCIV[-1/217]? EWCIV uncertainty0.1nmstat.errordoublenullableFWHMbCIV[674/37943]? FWHM of the broad CIV (FWHM_BROAD_CIV)km/sspect.line.widthdoublenullablee_FWHMbCIV[-1/10426]? FWHMbCIV uncertaintykm/sstat.errordoublenullableEWbCIV[-3.9e+6/5829]? Rest-frame EW of the broad CIV in {AA} (EW_BROAD_CIV)0.1nmspect.line.eqWidthdoublenullablee_EWbCIV[-55395/215]? EWbCIV uncertainty0.1nmstat.errordoublenullableFWHMnCIV[0/897]? FWHM of the narrow CIV (FWHM_NARROW_CIV)km/sspect.line.widthdoublenullablee_FWHMnCIV[-1/762]? FWHMnCIV uncertaintykm/sstat.errordoublenullableEWnCIV[-1486/330]? Rest-frame EW of the narrow CIV in {AA} (EW_NARROW_CIV)0.1nmspect.line.eqWidthdoublenullablee_EWnCIV[-29/94]? EWnCIV uncertainty0.1nmstat.errordoublenullableNCIV[280/281]? Number of good pixels for the rest-frame 1500-1600{AA} (LINE_NPIX_CIV)meta.numberfloatnullableMedSNCIV[0/68]? Median S/N per pixel for the rest-frame 1500-1600{AA}stat.snrdoublenullableq_CIV[-9999/0]? Flag for the quality in CIV fitting (0=acceptable) (LINE_FLAG_CIV) (5)meta.code.qualintnullablealphaL1[-2/-0.5]? Wavelength power-law index from ~1300 to 4661{AA} (ALPHA_LAMBDA_1)spect.indexdoublenullablealphaL2[-0.5/0.5]? Wavelength power-law index redward of 4661{AA} (ALPHA_LAMBDA_2)spect.indexdoublenullablerChi2[3e-5/522002]? Reduced chi-square (MODEL_PHOT_REDCHI2)stat.fit.chi2doublenullablelogL5100[38.7/47]? Monochromatic luminosity at 5100{AA} in erg/slog(1e-07W)phys.luminosity;em.optdoublenullablelogL3000[28.4/48.7]? Monochromatic luminosity at 3000{AA} in erg/slog(1e-07W)phys.luminositydoublenullablelogL1350[28.3/48.8]? Monochromatic luminosity at 1350{AA} in erg/slog(1e-07W)phys.luminositydoublenullablelogBHHb[5.6/10]? Virial BH mass based on H{beta} (LOGBH_HB)log(solMass)phys.massdoublenullablelogBHMgII[0.6/10.3]? Virial BH mass based on MgII (LOGBH_MGII)log(solMass)phys.massdoublenullablelogBHCIV[6.4/11]? Virial BH mass based on CIV (LOGBH_CIV)log(solMass)phys.massdoublenullable2RXSName 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)meta.id.crosscharCts[5.6/729]? Background-corrected source counts in 0.1-2.4keV from 2RXS source catalog ( 2RXS_CTS)ctphot.count;em.X-raydoublenullablee_Cts[2.7/29]? Cts uncertaintyctstat.errordoublenullable2RXSExp[54/1500]? Source exposure time from 2RXS (RXS2_EXPTIME)stime.duration;obs.exposuredoublenullableSep2RXS[0.1/30]? LAMOST-2RXS separation (LM_2RXS_SEP)arcsecpos.angDistancedoublenullable3XMMName of the object in XMM-Newton Serendipitous Source Catalog (3XMM-DR8, Rosen+ 2016, IX/55 ; JHHMMSS.s+DDMMSS) ( 3XMM_NAME)meta.id.crosscharF0.2-12keV[6.6e-15/4.3e-11]? Flux in the 0.2-12.0keV band from 3XMM-DR8 ( 3XMM_FLUX)mW.m**-2phot.flux;em.X-raydoublenullablef_logL3000i: -infinitymeta.codecharSDSSName of the quasar in the SDSS quasar catalog (Paris+ 2018, VII/286 ; superseded by VII/289) (6)meta.id.crosschar