VizieR

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

VizieR

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/ApJ/861/130
  BL Lac objects GTC low resolution spectroscopy (Landoni+, 2018)
ReadMe+ftp
2018ApJ...861..130L
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/861/130/bllacThe Sample of high redshift SDSS BLLac candidates with their observation log obtained at the Gran Telescopio CANARIAS (GTC) and the properties of the optical spectra (tables 1-3) (16 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)
  Ns  (n)Number of spectral line measurements (link to Table 4) (meta.number)
  SDSS (char) (i) Object Name (meta.id;meta.main)
  f_SDSS (char) c = Published in Paiano+ (2017ApJ...844..120P) (meta.code)
  RAJ2000 "h:m:s" (i) [7/17] Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Degree of Declination (J2000) (pos.eq.dec;meta.main)
  GLON deg Galactic longitude, decimal degrees (pos.galactic.lon)
  GLAT deg Galactic latitude, decimal degrees (pos.galactic.lat)
  Vmag mag [17.3/19.9] Magnitude from catalog (phot.mag;em.opt.V)
  E(B-V) mag [0.01/0.2] Reddening (from NED) (phot.color.excess)
  l_z (char) [≤>] Redshift limit flag (meta.code.error;src.redshift)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  z   [0.9/3.4] Redshift (Note 1)   (src.redshift)
  n_z (char) Redshift type (T=Tentative; LL=Lower limit from intervening systems) (meta.note)
  ExpB s [300/7200] Exposure time for R1000B grism (time.duration;obs.exposure)
  DateB "Y:M:D" (n)Date of observation of R1000B grism (time.epoch)
  SeeB arcsec [0.9/2.8] Seeing during acquisition of R1000B grism (instr.obsty.seeing)
  ExpR s [700/7200] Exposure time for R1000R grism (time.duration;obs.exposure)
  DateR "Y:M:D" (n)Date of observation of R1000R grism (time.epoch)
  SeeR arcsec [0.8/2.4] Seeing during acquisition of R1000R grism (instr.obsty.seeing)
  rmag mag [17/19.8] Magnitude measured from acquisition image in r band (phot.mag;em.opt.R)
  SNR   [20/100] Average GTC S/N of the spectrum (stat.snr)
  b_EWmin 0.1nm [0.2/1] Lower range of the minimum equivalent width (Note 1)   (spect.line.eqWidth;stat.min)
  B_EWmin 0.1nm [0.8/1.5] Upper range of the minimum equivalent width (Note 1)   (spect.line.eqWidth;stat.min;stat.max)
  l_zspec (char) [≤>] Redshift limit flag (meta.code.error)
  zspec   [0.3/3.4] Proposed redshift from this work (src.redshift)
  f_zspec (char) Flags on proposed redshift (Note 2)   (meta.code)
  Class (char) Class of the object (B=BLL or Q=FSRQ) (meta.code.class)
  Sloan  Display the online SDSS data for the nearest object (meta.ref.url)
  Simbad  ask the Simbad data-base about this object (meta.ref.url)
  NED  ask the NED data-base about this object (meta.ref.url)

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