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Query LAMOST Quasar Catalog
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about LAMOST Quasar Catalog
Position Constraints
Rectangle
min
ra
dec
(max 10 square degrees)
max
ra
dec
Cone
center
ra
dec
radius
arcsec
solve name:
Solve
Proximity
list of ra,dec[,radius] (max 100 obj)
#ra,dec,sep 0.0032368,11.7076448,2
Default radius
arcsec
or Upload File (
Sample
)
None
No position constraint
Output
Format:
HTML
VOTable
CSV
Options
[ lamost_phase1_v03 ]
Search only in this table
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column
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column
name
value
sample
description
min
max
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