VizieR

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VizieR

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J/ApJS/120/265/table5 HST photometry of M4 (Ibata+, 1999)
The photometry (4708 rows)
  recno=988
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ColumnValue  Explain   (UCD)
_RAJ200016 23 41.4576 "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)
_DEJ2000-26 32 41.460 "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)
_RAB195016 20 37.3698 "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)
_DEB1950-26 25 46.481 "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)
_Glon350.9745011 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+15.9421285 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)
988recno 988  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

IRF 988  Identification number (Cl* NGC 61621 IRF NNNN) (meta.id;meta.main)
Field0   [016] Field number (Note 1)   (obs.field)
Chip4   [1/4] Chip number (Note 2)   (meta.id;instr)
Class0   [0] Visual classification (Note 3)   (src.class.starGalaxy)
xpos779.67 pix x position (Note 4)   (pos.cartesian.x;instr.det)
ypos240.79 pix y position (Note 4)   (pos.cartesian.y;instr.det)
RA2000245.92274 deg (i) Right ascension (2000) (pos.eq.ra;meta.main)
DE2000-26.54485 deg (i) Declination (2000) (pos.eq.dec;meta.main)
F336W 23.986 mag F336W magnitude (phot.mag;em.opt.U)
Umag 23.799 mag U magnitude (phot.mag;em.opt.U)
e_Umag 0.215 mag rms uncertainty on Umag (stat.error)
2_Umag 1.164   χ-value associated to Umag (stat.fit.chi2)
F555W20.941 mag F555W magnitude (phot.mag;em.opt.V)
Vmag20.836 mag Johnson V magnitude (phot.mag;em.opt.V)
e_Vmag 0.025 mag rms uncertainty on Vmag (stat.error)
2_Vmag 1.042  χ-value associated to Vmag (stat.fit.chi2)
F814W19.019 mag F814W magnitude (phot.mag;em.opt.I)
Imag18.958 mag Kron-Cousins I magnitude (phot.mag;em.opt.I)
e_Imag 0.012 mag rms uncertainty on Imag (stat.error)
2_Imag 0.896  χ-value associated to Imag (stat.fit.chi2)
  
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