VizieR

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VizieR

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J/A+A/551/L8/cacomp Chromospheric activity of field stars (Pace, 2013)
Ca measurements and parameters (2085 rows)
  recno=788
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ColumnValue  Explain   (UCD)
_RAJ200001 33 15.800 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000-24 10 40.00 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195001 30 53.836 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950-24 26 02.41 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon197.866941 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-80.127339 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
788recno 788  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HD 9540   HD number of the star (Cat. III/135) (meta.id;meta.main)
RAJ200001 33 15.8 "h:m:s" (i) Right Ascension J2000 (pos.eq.ra;meta.main)
DEJ2000-24 10 40 "d:m:s" (i) Declination J2000 (pos.eq.dec;meta.main)
Smin 0.228 0.1nm Lowest measured S-index value (spect.index)
Smax 0.347 0.1nm Highest measured S-index value (spect.index)
SMW  0.1nm S-index mean value for a full cycle (Note 1)   (spect.index)
logRmin-4.734 [-] Conversion of Smin into logR'HK (Note 2)   (spect.index)
logRmax-4.485 [-] Conversion of Smax into logR'HK (Note 2)   (spect.index)
logRMW  [-] Conversion of SMW into logR'HK (Note 2)   (spect.index)
Age 4.20 Gyr Age estimation from GCS (Note 3)   (time.age)
e_Age 4.05 Gyr From the GCS. 2σ error on the Age (Note 3)   (stat.error;time.age)
Teff5460 K Effective temperature from GCS (Note 3)   (phys.temperature.effective)
[Fe/H]-0.07 [Sun] Metallicity from GCS (Note 3)   (phys.abund.Z)

GCSGCS  Data from the Geneva-Copenhagen Survey of Solar neighbourhood catalog (meta.ref.url)
SimbadSimbad  ask the Simbad data-base about this object (meta.ref)

Ref7afjj  References for the S-index measurements (Note G1)   (meta.ref)
  
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