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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/MNRAS/298/332
  Chromospheric activity-age relation (Rocha-Pinto+ 1998)
ReadMe+ftp
1998MNRAS.298..332R
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/298/332/tablea1Stellar data for sample B (730 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)
  HD  HD (Cat. III/135) number
  m_HD (char) [ABC] Multiplicity index on HD
  logR'HK  logR'HK index (measurement of the chromospheric emission)
  [Fe/H] [Sun] Metallicity
  logTeff [K] Effective temperature
  DVMAG mag Differential absolute V magnitude
  logtiso [yr] (n) Isochrone age
  logtce [yr] (n) Chromospheric age (tce=-1.50logR'HK+2.25)
  Dlogt [yr] (n) Age excess (logtis - logtce)
  Simbad  ask the Simbad data-base about this object
  _RA deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
  _DE deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)

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