VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .
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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/other/RAA/19.98
  X-ray activity from different types of stars (He+, 2019)
ReadMe+ftp
2019RAA....19...98H
Similar Catalogs
Post annotation 		img(gal)
1.J/other/RAA/19.98/table1The X-ray information for the sample sources (887 rows)
2.J/other/RAA/19.98/table2(c)Stellar parameters for the sample sources (1001 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)ObsID  Spectral ID in LAMOST catalog (meta.id;meta.main)
  (1)FX mW/m2 Unabsorbed flux in band 0.3-3.5keV (phot.flux;em.X-ray)
  (1)e_FX mW/m2 rms uncertainty on FX (stat.error)
  (1)log(FX/FV) [-] X-ray to optical flux ratio (phot.flux;arith.ratio)
  (1)e_log(FX/FV) [-] rms uncertainty on log(FX/FV) (stat.error)
  (1)HR  (n) EPIC HR using the bands of 0.5-1keV and 1-2keV derived from the 3XMM-DR5 catalog (phot.flux;arith.ratio)
  (1)e_HR  (n) rms uncertainty on HR (stat.error)
  (2)Xdata (char) indicates X-ray information in table1 (meta.ref.url)
  (2)RAJ2000 deg (i) Right ascension (J2000) (pos.eq.ra;meta.main)
  (2)DEJ2000 deg (i) Declination (J2000) (pos.eq.dec;meta.main)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)Type (char) Stellar subclass (src.class)
  (2)Vmag mag V-band magnitude (phot.mag;em.opt.V)
  (2)e_Vmag mag rms uncertainty on Vmag (stat.error;phot.mag;em.opt.V)
  (2)AV mag Extinction in the V band (phys.absorption;em.opt.V)
  (2)NH cm-2 Hydrogen column density converted from optical extinction (phys.columnDensity)
  (2)Teff K Effective temperature (phys.temperature.effective)
  (2)e_Teff K rms uncertainty on Teff (stat.error;phys.temperature.effective)
  (2)logg [cm/s2] Surface gravity (phys.gravity)
  (2)e_logg [cm/s2] rms uncertainty on logg (stat.error)
  (2)[Fe/H] [-] Metallicity (phys.abund.Z)
  (2)e_[Fe/H] [-] rms uncertainty on [Fe/H] (stat.error;phys.abund.Fe)

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