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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/ApJ/508/491
  M101 Cepheids (Stetson+, 1998)
ReadMe+ftp
1998ApJ...508..491S
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/508/491/table2(c)Coordinates and mean magnitudes for local standards (139 rows)
Original positions off by -0.4s and +1''
2.J/ApJ/508/491/table3(c)Variable coordinates, periods, and mean magnitudes (255 rows)
Original positions off by -0.4s and +1''
3.J/ApJ/508/491/table5Comparison of ALLFRAME AND DoPHOT for variables (93 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)
  (1+2)Chip   [0/4] WFPC2 chip number (meta.id;instr)
   (ALL)[SSF98]  Identification number ([SSF98] NNNNN in Simbad) (meta.id;meta.main)
  (1+2)Xpos pix X position (pos.cartesian.x;instr.det)
  (1+2)Ypos pix Y position (pos.cartesian.y;instr.det)
  (1)Vmag mag V magnitude (F555W) (phot.mag;em.opt.V)
  (1)e_Vmag mag rms uncertainty on V magnitude (stat.error;phot.mag;em.opt.V)
  (1)Imag mag I magnitude (F814W) (phot.mag;em.opt.I)
  (1)e_Imag mag rms uncertainty on I magnitude (stat.error;phot.mag;em.opt.I)
  (1)o_Vmag  Number of observations in Vmag (meta.number)
  (1)o_Imag  Number of observations in Imag (meta.number)

ALL cols		    
 (i)indexed column
  (1+2)_RA deg (i) Position, recomputed by VizieR (about 2arcsec from original position) (right ascension part) (pos.eq.ra;meta.main)
  (1+2)_DE deg (i) Position, recomputed by VizieR (about 2arcsec from original position) (declination part) (pos.eq.dec;meta.main)
  (2)DoPhot (char) indicates that a comparison DoPHOT-ALLFRAME exists in table5 (meta.ref.url)
  (2+3)Per d Period (time.period)
  (2)e_Per d rms uncertainty on Per (stat.error)
  (2+3)<Vmag> mag Mean V magnitude (F555W) (phot.mag;em.opt.V)
  (2)e_<Vmag> mag rms uncertainty on <Vmag> (stat.error;phot.mag;em.opt.V)
  (2+3)<Imag> mag Mean I magnitude (I814W) (phot.mag;em.opt.I)
  (2)e_<Imag> mag rms uncertainty on <Imag> (stat.error;phot.mag;em.opt.I)
  (3)DlogPer [d] DoPHOT-ALLFRAME log(Per) (stat.error)
  (3)D<Vmag> mag DoPHOT-ALLFRAME <Vmag> (src.var.amplitude)
  (3)e_D<Vmag> mag rms uncertainty on D<Vmag> (stat.error;phot.mag;em.opt.V)
  (3)D<Imag> mag DoPHOT-ALLFRAME <Imag> (src.var.amplitude)

ALL cols		    
 (i)indexed column
  (3)e_D<Imag> mag rms uncertainty on D<Imag> (stat.error;phot.mag;em.opt.I)

ALL cols		    
 (i)indexed column
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