VizieR

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VizieR

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/AJ/122/1486
  NGC 2451A proper motions and membership (Platais+, 2001)
ReadMe+ftp
2001AJ....122.1486P
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/122/1486/table1(c)Astrometry and photometry for probable cluster members in NGC 2451A (136 rows)
2.J/AJ/122/1486/table3Radial velocities (67 rows)
3.J/AJ/122/1486/spm(c)Catalog of positions, relative proper motions and BV photographic photometry in the region of open cluster NGC 2451 (5868 rows)
4.J/AJ/122/1486/ccd(c)Catalog of CCD BV photometry in the region of open cluster NGC 2451 (14836 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+3)PKB  Running identification number, Cl* NGC 2451 PKB NNNNN in Simbad (meta.id;meta.main)
  (1)Will  (n) The Williams (1967MNSSA..26...30W) number, NGC 2451 NNN in Simbad (meta.id)
  (1)RAJ2000 "h:m:s" (i) Right Ascension (J2000, epoch J2000) (Note 1)   (pos.eq.ra;meta.main)
  (1)DEJ2000 "d:m:s" (i) Declination (J2000, epoch J2000) (Note 1)   (pos.eq.dec;meta.main)
  (1)pmX mas/yr Relative proper motion along X (Note 2)   (pos.pm;pos.cartesian.x)
  (1)pmY mas/yr Relative proper motion along Y (Note 2)   (pos.pm;pos.cartesian.y)
  (1+3+4)Vmag mag The Johnson V band magnitude (phot.mag;em.opt.V)
  (1)r_Vmag (char) [aeu] Source of Vmag (Note 3)   (meta.ref;pos.frame)
  (1+4)B-V mag The (B-V) color (phot.color;em.opt.B;em.opt.V)
  (1+3)o_Vmag  Number of observations for Vmag (meta.number)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Prob % Cluster membership probability (stat)
  (2)HJD d Heliocentric Julian date (time.epoch)
  (2)HRV km/s Heliocentric radial velocity (spect.dopplerVeloc;pos.heliocentric)
  (2)n_HRV (char) [a] indicates a broad cross-correlation peak (meta.note)
  (2)Memb (char) Membership status based on membership probability (Note 2)   (meta.code.member)
  (3)Xpos mm X position (Note 1)   (pos.cartesian.x;instr.plate)
  (3)Ypos mm Y position (Note 1)   (pos.cartesian.y;instr.plate)
  (3)RArad deg (i) Right ascension for the epoch 1991.25 and in the ICRS reference system (i.e. equinox 2000.0) (pos.eq.ra;meta.main)
  (3)DErad deg (i) Declination for the epoch 1991.25 and equinox 2000.0 (pos.eq.dec;meta.main)
  (3)e_RArad mas Estimated standard error in right ascension multiplied by cos(DE) (stat.error)
  (3)e_DErad mas Estimated standard error in declination (stat.error)
  (3)pmRA mas/yr Relative proper motion in right ascension multiplied by cos(DE) (pos.pm;pos.eq.ra)
  (3)pmDE mas/yr Relative proper motion in declination (pos.pm;pos.eq.dec)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)o_Bmag  The number of grating images per star detected on blue plates (grating image pairs are counted as one image) (meta.number)
  (3)e_pmRA mas/yr Estimated standard error in right ascension's proper motion (stat.error;pos.pm;pos.eq.ra)
  (3)e_pmDE mas/yr Estimated standard error in declination's proper motion (stat.error;pos.pm;pos.eq.dec)
  (3)Bmag mag (n) Photographic B-magnitude (if missing then set to 0.00) (phot.mag;em.opt.B)
  (3)e_Bmag mag Estimated standard error of B-magnitude (stat.error;phot.mag;em.opt.B)
  (3+4)e_Vmag mag Estimated standard error of V-magnitude (stat.error;phot.mag;em.opt.V)
  (3)Vmagc mag (n) CCD V-magnitude (if missing then set to -1.000) (phot.mag;em.opt.V)
  (3)B-Vc mag (n) CCD B-V color (if missing then set to -1.000) (phot.color;em.opt.B;em.opt.V)
  (3)e_Vmagc mag IRAF generated error in CCD V-magnitude (stat.error;phot.mag;em.opt.V)
  (3)e_B-Vc mag IRAF generated error in CCD B-V color (stat.error;phot.color;em.opt.B)
  (3+4)Nframe  (n) [0/4] Number of frames per star (Note G1)   (meta.number)
  (3+4)_RA.icrs deg (n)(i) Right ascension (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
  (3+4)_DE.icrs deg (n)(i) Declination (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (4)Seq  Object identifier (Note 1)   (meta.id;meta.main)
  (4)RA1996 deg (i) Right ascension (mean epoch=1996.6, equinox J2000.0) (pos.eq.ra;meta.main)
  (4)DE1996 deg (i) Declination (mean epoch=1996.6, equinox J2000.0) (pos.eq.dec;meta.main)
  (4)e_B-V mag IRAF generated error in CCD B-V color (stat.error;phot.color;em.opt.B)
  (4)DRA arcsec "CCD-USNOA2.0" (I/252) coordinate difference in right ascension multiplied by cos(DE) (stat.fit.residual;pos.eq.ra;arith.diff)
  (4)DDE arcsec "CCD-USNOA2.0" (I/252) coordinate difference in declination (stat.fit.residual;pos.eq.dec;arith.diff)

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