VizieR

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VizieR

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J/ApJ/889/44/stars UKIRT obs. of red supergiants in M31 (Neugent+, 2020)
UKIRT photometry M31 fields A and B (Table 2) and control field (Table 3) (206661 rows)
  recno=40460
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200000 40 28.5700 "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+40 49 50.100 "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)
_RAB195000 37 45.0456 "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+40 33 22.822 "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)
_Glon120.6959165 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-21.9935695 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)
40460recno 40460  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

FieldA  Field A, B or C=control field; column added by CDS (meta.id;obs.field)
RAJ200000 40 28.57 "h:m:s" (i) [0] Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+40 49 50.1 "d:m:s" (i) [40/42] Degree of Declination (J2000) (pos.eq.dec;meta.main)
Jmag19.444 mag [6.3/20.5] Apparent J band magnitude (Note 1)   (phot.mag;em.IR.J)
e_Jmag 0.150 mag [0.001/0.4] The 1σ uncertainty in Jmag (stat.error;phot.mag)
Ksmag17.868 mag [5.3/18.5] Apparent Ks band magnitude (Note 1)   (phot.mag;em.IR.K)
e_Ksmag 0.088 mag [0.001/0.3] The 1σ uncertainty in Ksmag (stat.error;phot.mag)
J-Ks 1.576 mag [0.5/2] The (J-Ks) color index (phot.color;em.IR.J;em.IR.K)
e_J-Ks 0.174 mag [0.001/0.4] The 1σ uncertainty in J-Ks (stat.error;phot.color;em.IR.J)
Mm3   [0/3] Membership flag (Note 2)   (meta.code.error)
  
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