VizieR

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Simple Target List Of Targets Fast Xmatch with large catalogs or Simbad

Target Name (resolved by Sesame) or Position:	Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)	Radius Box size

	J/ApJS/240/6	-1		LAMOST Quasar Survey: Data Releases 4 and 5 (Yao+, 2019) ReadMe+ftp 2019ApJS..240....6Y Similar Catalogs Post annotation
1.	J/ApJS/240/6/catalog		Quasars identified in LAMOST DR4 and DR5 (original column names in green) (19253 rows) metaJ/ApJS/240/6/catalog

Simple Constraint List Of Constraints

Query by Constraints constraints help

applied on Columns (Output Order: + - )

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Column

Constraint

Explain (UCD)

recno

Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

ObsID

[353601018/584816178] Unique spectra ID in LAMOST database (meta.id;obs)

ObsDate

"Y:M:D"

⁽ⁿ⁾⁽ⁱ⁾ Target observation date (time.epoch;obs)

LAMOST

(char)

LAMOST designation (JHHMMSS.ss+DDMMSS.ss) (NAME) (meta.id;meta.main)

RAJ2000

deg

⁽ⁱ⁾ Right ascension (J2000) (RA) (pos.eq.ra;meta.main)

DEJ2000

deg

⁽ⁱ⁾ [-6.9/60.4] Declination (J2000) (DEC) (pos.eq.dec;meta.main)

LMJD

[57279/57920] Local modified Julian day of observation (Note 1) (time.epoch;obs)

planID

(char)

Spectroscopic plan identification (Note 1) (obs.field)

spID

[1/16] Spectrograph identification (Note 1) (meta.id;instr)

fiberID

[1/250] Spectroscopic fiber number (Note 1) (meta.note)

[0.001/5.4] Redshift based on visual inspection (Z_VI) (src.redshift)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

q_z

[0/1] ZWARNING flag based on visual inspection (1=not robust) (ZWARNING) (meta.code.qual;src.redshift)

Flag

[0/1110] Flag of quasar candidate selection (SOURCE_FLAG) (Note 2) (meta.code)

iMAG

mag

⁽ⁿ⁾ [-33.8/-9.4] Absolute i-band magnitude K-corrected to z=2, M_i(z=2) (Mi_Z2) (Note 3) (phys.magAbs;em.opt.I)

Nsp

[1/13] Number of spectroscopic observations (NSPECOBS) (Note 4) (meta.number)

SNR

⁽ⁿ⁾ [0/89] Median S/N per pixel in the wavelength regions of [4000-5700]Å and [6200,9000]Å (SNR_SPEC) (stat.snr)

FWHMbHa

km/s

⁽ⁿ⁾ [890/15499] FWHM of broad Hα (FWHM_BROAD_HA) (spect.line.width)

e_FWHMbHa

km/s

⁽ⁿ⁾ [-1/3935] FWHMbHa uncertainty (stat.error)

EWbHa

0.1nm

⁽ⁿ⁾ [-8428/1.2e+7] Rest-frame EW of broad Hα in Å (EW_BROAD_HA) (spect.line.eqWidth)

e_EWbHa

0.1nm

⁽ⁿ⁾ [-1/651.7] EWbHa uncertainty (stat.error)

FWHMnHa

km/s

⁽ⁿ⁾ [0/1268] FWHM of narrow Hα (FWHM_NARROW_HA) (spect.line.width)

e_FWHMnHa

km/s

⁽ⁿ⁾ [-1/367.5] FWHMnHa uncertainty (stat.error)

EWnHa

0.1nm

⁽ⁿ⁾ [0/848.1] Rest-frame EW of narrow Hα in Å (EW_NARROW_HA) (spect.line.eqWidth)

e_EWnHa

0.1nm

⁽ⁿ⁾ [-1/460.4] EWnHa uncertainty (stat.error)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

EWNII

0.1nm

⁽ⁿ⁾ [-683/703.1] Rest-frame EW of [NII]λ6584 in Å (EW_NII_6584) (spect.line.eqWidth)

e_EWNII

0.1nm

⁽ⁿ⁾ [-1/187.6] EWNII uncertainty (stat.error)

EWSII6716

0.1nm

⁽ⁿ⁾ [0/344.2] Rest-frame EW of [SII]λ6716 in Å (EW_SII_6716) (spect.line.eqWidth)

e_EWSII6716

0.1nm

⁽ⁿ⁾ [-1/54.1] EWSII6716 uncertainty (stat.error)

EWSII6731

0.1nm

⁽ⁿ⁾ [0/2.7e+6] Rest-frame EW of [SII]λ6731 in Å (EW_SII_6731) (spect.line.eqWidth)

e_EWSII6731

0.1nm

⁽ⁿ⁾ [-1/88] EWSII6731 uncertainty (stat.error)

EWFeHa

0.1nm

⁽ⁿ⁾ [-2765/1753] Rest-frame equivalent width of Fe within 6000-6500Å in Å (EW_FE_HA) (spect.line.eqWidth)

NHa

⁽ⁿ⁾ [209/241] Number of good pixels for the rest-frame 6400-6765Å (LINE_NPIX_HA) (meta.number)

MedSNHa

⁽ⁿ⁾ [-0/193] Median S/N per pixel for the rest-frame 6400-6765Å (LINE_MED_SN_HA) (stat.snr)

q_Ha

⁽ⁿ⁾ [-9999/0] Flag for the quality in Hα fitting (0=reliable) (LINE_FLAG_HA) (Note 5) (meta.code.qual)

FWHMbHb

km/s

⁽ⁿ⁾ [877/14998] FWHM of broad Hβ (FWHM_BROAD_HB) (spect.line.width)

e_FWHMbHb

km/s

⁽ⁿ⁾ [-1/8968] FWHMbHb uncertainty (stat.error)

EWbHb

0.1nm

⁽ⁿ⁾ [-834730/2.8e+17] Rest-frame EW of broad Hβ in Å (EW_BROAD_HB) (spect.line.eqWidth)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

e_EWbHb

0.1nm

⁽ⁿ⁾ [-1/3.1e+16] EWbHb uncertainty (stat.error)

FWHMnHb

km/s

⁽ⁿ⁾ [0/897] FWHM of narrow Hβ (FWHM_NARROW_HB) (spect.line.width)

e_FWHMnHb

km/s

⁽ⁿ⁾ [-1/669] FWHMnHb uncertainty (stat.error)

EWnHb

0.1nm

⁽ⁿ⁾ [0/5.4e+16] Rest-frame EW of narrow Hβ in Å (EW_NARROW_HB) (spect.line.eqWidth)

e_EWnHb

0.1nm

⁽ⁿ⁾ [-1/1.6e+16] EWnHb uncertainty (stat.error)

FWHMOIII

km/s

⁽ⁿ⁾ [0/3132] FWHM of [OIII]λ5007 (FWHM_OIII_5007) (spect.line.width)

e_FWHMOIII

km/s

⁽ⁿ⁾ [-1/354] FWHMOIII uncertainty (stat.error)

EWOIII

0.1nm

⁽ⁿ⁾ [0/4e+17] Rest-frame EW of [OIII]λ5007 in Å (EW_OIII_5007) (spect.line.eqWidth)

e_EWOIII

0.1nm

⁽ⁿ⁾ [-1/24] EWOIII uncertainty (stat.error)

EWFeHb

0.1nm

⁽ⁿ⁾ [-1.5e+14/1.9e+17] Rest-frame equivalent width of Fe within 4435-4685Å in Å (EW_FE_HB) (spect.line.eqWidth)

NHb

⁽ⁿ⁾ [179/180] Number of good pixels for the rest-frame 4750-4950Å (LINE_NPIX_HB) (meta.number)

MedSNHb

⁽ⁿ⁾ [0/100] Median S/N per pixel for the rest-frame 4750-4950Å (LINE_MED_SN_HB) (stat.snr)

q_Hb

⁽ⁿ⁾ [-9999/0] Flag for the quality in Hβ fitting (0=acceptable) (LINE_FLAG_HB) (Note 5) (meta.code.qual)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

FWHMMgII

km/s

⁽ⁿ⁾ [134.9/16576] FWHM of the whole MgII emission line (FWHM_MGII) (spect.line.width)

e_FWHMMgII

km/s

⁽ⁿ⁾ [-1/4756] FWHMMgII uncertainty (stat.error)

EWMgII

0.1nm

⁽ⁿ⁾ [-5699/1.8e+18] Rest-frame equivalent width of the whole MgII in Å (EW_MGII) (spect.line.eqWidth)

e_EWMgII

0.1nm

⁽ⁿ⁾ [-1/1.8e+17] EWMgII uncertainty (stat.error)

FWHMbMgII

km/s

⁽ⁿ⁾ [202/26186] FWHM of the whole broad MgII (FWHM_BROAD_MGII) (spect.line.width)

e_FWHMbMgII

km/s

⁽ⁿ⁾ [-1/15925] FWHMbMgII uncertainty (stat.error)

EWbMgII

0.1nm

⁽ⁿ⁾ [-5276/1.6e+18] Rest-frame equivalent width of the whole broad MgII in Å (EW_BROAD_MGII) (spect.line.eqWidth)

e_EWbMgII

0.1nm

⁽ⁿ⁾ [-1/1.8e+17] EWbMgII uncertainty (stat.error)

FWHMbMgII2

km/s

⁽ⁿ⁾ [202/26186] FWHM of the broad MgIIλ2796 (FWHM_BROAD_MGII_2796) (spect.line.width)

e_FWHMbMgII2

km/s

⁽ⁿ⁾ [-1/18770] FWHMbMgII2 uncertainty (stat.error)

FWHMnMgII2

km/s

⁽ⁿ⁾ [0/897] FWHM of the narrow MgIIλ2796 (FWHM_NARROW_MGII_2796) (spect.line.width)

e_FWHMnMgII2

km/s

⁽ⁿ⁾ [-1/97551] FWHMnMgII2 uncertainty (stat.error)

EWFeMgII

0.1nm

⁽ⁿ⁾ [-876/4.1e+19] Rest-frame equivalent width of Fe within 2200-3090Å in Å (EW_FE_MGII) (spect.line.eqWidth)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

NMgII

⁽ⁿ⁾ [310/311] Number of good pixels for the rest-frame 2700-2900Å (LINE_NPIX_MGII) (meta.number)

MedSNMgII

⁽ⁿ⁾ [0/124] Median S/N per pixel for the rest-frame 2700-2900Å (LINE_MED_SN_MGII) (stat.snr)

q_MgII

⁽ⁿ⁾ [-9999/0] Flag for the quality in MgII fitting (0=acceptable) (LINE_FLAG_MGII) (Note 5) (meta.code.qual)

FWHMCIV

km/s

⁽ⁿ⁾ [215.9/36566] FWHM of the whole CIV (FWHM_CIV) (spect.line.width)

e_FWHMCIV

km/s

⁽ⁿ⁾ [-1/6447] FWHMCIV uncertainty (stat.error)

EWCIV

0.1nm

⁽ⁿ⁾ [-3.9e+6/6159] Rest-frame EW of the whole CIV in Å (EW_CIV) (spect.line.eqWidth)

e_EWCIV

0.1nm

⁽ⁿ⁾ [-1/217] EWCIV uncertainty (stat.error)

FWHMbCIV

km/s

⁽ⁿ⁾ [674/37943] FWHM of the broad CIV (FWHM_BROAD_CIV) (spect.line.width)

e_FWHMbCIV

km/s

⁽ⁿ⁾ [-1/10426] FWHMbCIV uncertainty (stat.error)

EWbCIV

0.1nm

⁽ⁿ⁾ [-3.9e+6/5829] Rest-frame EW of the broad CIV in Å (EW_BROAD_CIV) (spect.line.eqWidth)

e_EWbCIV

0.1nm

⁽ⁿ⁾ [-55395/215] EWbCIV uncertainty (stat.error)

FWHMnCIV

km/s

⁽ⁿ⁾ [0/897] FWHM of the narrow CIV (FWHM_NARROW_CIV) (spect.line.width)

e_FWHMnCIV

km/s

⁽ⁿ⁾ [-1/762] FWHMnCIV uncertainty (stat.error)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

EWnCIV

0.1nm

⁽ⁿ⁾ [-1486/330] Rest-frame EW of the narrow CIV in Å (EW_NARROW_CIV) (spect.line.eqWidth)

e_EWnCIV

0.1nm

⁽ⁿ⁾ [-29/94] EWnCIV uncertainty (stat.error)

NCIV

⁽ⁿ⁾ [280/281] Number of good pixels for the rest-frame 1500-1600Å (LINE_NPIX_CIV) (meta.number)

MedSNCIV

⁽ⁿ⁾ [0/68] Median S/N per pixel for the rest-frame 1500-1600Å (stat.snr)

q_CIV

⁽ⁿ⁾ [-9999/0] Flag for the quality in CIV fitting (0=acceptable) (LINE_FLAG_CIV) (Note 5) (meta.code.qual)

alphaL1

⁽ⁿ⁾ [-2/-0.5] Wavelength power-law index from ∼1300 to 4661Å (ALPHA_LAMBDA_1) (spect.index)

alphaL2

⁽ⁿ⁾ [-0.5/0.5] Wavelength power-law index redward of 4661Å (ALPHA_LAMBDA_2) (spect.index)

rChi2

⁽ⁿ⁾ [3e-5/522002] Reduced chi-square (MODEL_PHOT_REDCHI2) (stat.fit.chi2)

logL5100

[10-7W]

⁽ⁿ⁾ [38.7/47] Monochromatic luminosity at 5100Å in erg/s (phys.luminosity;em.opt)

logL3000

[10-7W]

⁽ⁿ⁾ [28.4/48.7] Monochromatic luminosity at 3000Å in erg/s (phys.luminosity)

f_logL3000

(char)

i: -infinity (meta.code)

logL1350

[10-7W]

⁽ⁿ⁾ [28.3/48.8] Monochromatic luminosity at 1350Å in erg/s (phys.luminosity)

f_logL1350

(char)

i: -infinity (meta.code)

ALL cols

⁽ⁿ⁾ indicates a possible blank or NULL column

⁽ⁱ⁾indexed column

logBHHb

[Msun]

⁽ⁿ⁾ [5.6/10] Virial BH mass based on Hβ (LOGBH_HB) (phys.mass)

logBHMgII

[Msun]

⁽ⁿ⁾ [0.6/10.3] Virial BH mass based on MgII (LOGBH_MGII) (phys.mass)

logBHCIV

[Msun]

⁽ⁿ⁾ [6.4/11] Virial BH mass based on CIV (LOGBH_CIV) (phys.mass)

SDSS

(char)

Name of the quasar in the SDSS quasar catalog (Paris+ 2018, VII/286 ; superseded by VII/289) (Note 6) (meta.id.cross)

2RXS

(char)

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) (meta.id.cross)

Cts

⁽ⁿ⁾ [5.6/729] Background-corrected source counts in 0.1-2.4keV from 2RXS source catalog ( 2RXS_CTS) (phot.count;em.X-ray)

e_Cts

⁽ⁿ⁾ [2.7/29] Cts uncertainty (stat.error)

2RXSExp

⁽ⁿ⁾ [54/1500] Source exposure time from 2RXS (RXS2_EXPTIME) (time.duration;obs.exposure)

Sep2RXS

arcsec

⁽ⁿ⁾ [0.1/30] LAMOST-2RXS separation (LM_2RXS_SEP) (pos.angDistance)

3XMM

(char)

Name of the object in XMM-Newton Serendipitous Source Catalog (3XMM-DR8, Rosen+ 2016, IX/55 ; JHHMMSS.s+DDMMSS) ( 3XMM_NAME) (meta.id.cross)