VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

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Simple TargetList Of TargetsFast 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/AJ/124/3042
  Narrow-line Seyfert 1 galaxies from SDSS EDR (Williams+, 2002)
ReadMe+ftp
2002AJ....124.3042W
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/124/3042/table1NLS1s from the SDSS Early Data Release (150 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  SDSS (char) The Sloan Digital Sky Survey Name (Note 1)   (meta.id)
  z  Redshift (src.redshift)
  FWHM km/s The Hβ Full-Width at Half-Maximum (spect.line.width;em.line.Hbeta)
  HR1  (n) The ROSAT Hardness Ratio 1 parameter (Note 2)   (phot.flux;arith.ratio)
  e_HR1  (n) Uncertainty in HR1 (stat.error)
  Gamma  (n) The X-ray photon index (Note 3)   (spect.index)
  e_Gamma  (n) Uncertainty in Gamma (stat.error)
  Note  (n) [1/5] Additional notes (Note 4)   (meta.note)
  _RA deg (i) Position (derived from SDSS name) (right ascension part) (pos.eq.ra;meta.main)
  _DE deg (i) Position (derived from SDSS name) (declination part) (pos.eq.dec;meta.main)

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(n) indicates a possible blank or NULL column(i)indexed column
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