Query LAMOST Quasar Catalog

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Position Constraints

Rectangle min ra dec (max 10 square degrees)
max ra dec
Cone center ra dec radiusarcsec
solve name:
Proximity list of ra,dec[,radius] (max 100 obj)
 Default radius
arcsec
or Upload File (Sample)
None No position constraint
 

Output

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[ lamost_phase1_v03 ] Search only in this table
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column		 name value sample description
minmax
obsid 66604143 Unique Spectra ID
designation 133227.89+151519.1 
ra 203.116208 
dec 15.2553101 
mjd 56393 
planid EG000024N121601B01 Spectroscopic plan name
spid 15 Spectrograph identification
fiberid 16 Spectroscopic fiber number
z_vi 1.6330000162124634 Redshift from visual inspection
zwarning 0 ZWARNING flag from visual inspection
mi_z2 -25.641577597407096 Mi (z = 2), K-corrected to z=2 following Richards et al. (2006)
nspecobs 1 Number of spectroscopic observations
snr_spec 0.0 Median S/N per pixel of the spectrum
bal_flag 0 Flag of broad absorption features
fwhm_broad_ha 0.0 FWHM of broad Hα in km s-1
ew_broad_ha 0.0 Rest-frame equivalent width of broad Hα in Å
fwhm_narrow_ha 0.0 FWHM of narrow Hα in km s-1
ew_narrow_ha 0.0 Rest-frame equivalent width of narrow Hα in Å
ew_nii_6585 0.0 
ew_sii_6718 0.0 
ew_sii_6732 0.0 
ew_fe_ha 0.0 Rest-frame equivalent width of Fe within 6000–6500 Å in Å
line_npix_ha 0 Number of good pixels for the rest-frame 6400–6765 Å
line_med_sn_ha 0.0 Median S/N per pixel for the rest-frame 6400–6765 Å
line_flag_ha -1 Flag for the quality in Hα fitting
fwhm_broad_hb 0.0 FWHM of broad Hβ in km s-1
ew_broad_hb 0.0 Rest-frame equivalent width of broad Hβ in Å
fwhm_narrow_hb 0.0 FWHM of narrow Hβ in km s-1
ew_narrow_hb 0.0 Rest-frame equivalent width of narrow Hβ in Å
fwhm_oiii_5007 -9999.0 FWHM of [O III]λ5007 in km s-1
ew_oiii_5007 0.0 Rest-frame equivalent width of [O III]λ5007 in Å
ew_fe_hb 0.0 Rest-frame equivalent width of Fe within 4435–4685 Å in Å
line_npix_hb 0 Number of good pixels for the rest-frame 4750–4950 Å
line_med_sn_hb 0.0 Median S/N per pixel for the rest-frame 4750–4950 Å
line_flag_hb -1 Flag for the quality in Hβ fitting
fwhm_mgii 2763.1021499635367 FWHM of the whole Mg II emission line in km s-1
ew_mgii 31.818383858502013 Rest-frame equivalent width of the whole Mg II in Å
fwhm_broad_mgii 2970.334811210762 FWHM of the whole broad Mg II in km s-1
ew_broad_mgii 30.96357884675979 Rest-frame equivalent width of the whole broad Mg II in Å
fwhm_broad_mgii_2796 2694.024596214462 FWHM of the broad Mg IIλ2796 in km s-1
fwhm_narrow_mgii_2796 690.7755374907509 FWHM of the narrow Mg IIλ2796 in km s-1
ew_fe_mgii 0.0 Rest-frame equivalent width of Fe within 2200–3090 Å in Å
line_npix_mgii 96 Number of good pixels for the rest-frame 2700–2900 Å
line_med_sn_mgii 0.0 Median S/N per pixel for the rest-frame 2700–2900 Å
line_flag_mgii -1 Flag for the quality in Mg II fitting
fwhm_civ 1519.706182480185 FWHM of the whole C IV in km s-1
ew_civ 73.38796366078054 Rest-frame equivalent width of the whole C IV in Å
fwhm_broad_civ 11190.563707351765 FWHM of the broad C IV in km s-1
ew_broad_civ 57.56768148394976 Rest-frame equivalent width of the broad C IV in Å
fwhm_narrow_civ 1234.5309356265468 FWHM of the narrow C IV in km s-1
ew_narrow_civ 15.820282176830752 Rest-frame equivalent width of the narrow C IV in Å
line_npix_civ 120 Number of good pixels for the rest-frame 1500–1600 Å
line_med_sn_civ 0.0 Median S/N per pixel for the rest-frame 1500–1600 Å
line_flag_civ 0 Flag for the quality in C IV fitting
alpha_lambda_1 -2.0 Wavelength power-law index from ∼1300 to 4661 Å
alpha_lambda_2 -99.0 Wavelength power-law index redward of 4661 Å
model_phot_redchi2 11.915843654011923 Reduced chi-square
logl5100 0.0 Monochromatic luminosity at 5100 Å in erg s-1
logl3000 0.0 Monochromatic luminosity at 3000 Å in erg s-1
logl1350 45.45360565185547 Monochromatic luminosity at 1350 Å in erg s-1
logbh_hb 0.0 Virial BH mass (M☉) based on Hβ
logbh_mgii 0.0 Virial BH mass (M☉) based on Mg II
logbh_civ 9.528115272521973 Virial BH mass (M☉) based on C IV
obs_flag F