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/142/170
  ALFALFA survey: the {alpha}.40 HI source catalog (Haynes+, 2011)
ReadMe+ftp
2011AJ....142..170H
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/142/170/table1Properties of HI detections (15855 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
  UGC/AGC  (i) [7/749512] Entry number in AGC (Note G1)   ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  O (char) link to SDSS counterpart (table 3) ((unassigned);phys.veloc.orbital;arith.diff;pos.geocentric)
  OName (char) Common name of the Optical Counterparts (OCs) ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  RAJ2000 "h:m:s" Hour of right ascension (J2000) (Note 1)   ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  DEJ2000 "d:m:s" Degree of declination (J2000) (Note 1)   ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  RAO "h:m:s" (n) Hour of right ascension (J2000) (Note 2)   ((unassigned);(unassigned);(unassigned);(unassigned))
  DEO "d:m:s" (n) Degree of declination (J2000) (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;(unassigned))
  cz km/s [-470/17823] Heliocentric velocity of the HI profile midpoint ((unassigned);(unassigned);(unassigned);(unassigned);(unassigned);(unassigned))
  W50 km/s [4/885] Observed velocity width at 50% of peak on either side ((unassigned);(unassigned);(unassigned);phys.atmol.element;meta.main)
  e_W50 km/s [1/283] Error on W50 (instr.fov;obs.airMass;arith.factor;time.age;meta.main)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Si(HI) Jy.km/s [0.11/999.9] HI line flux (phot.limbDark;meta.unit;arith;phys.atmol.sWeight.nuclear;(unassigned);phys.angSize.smajAxis;meta.main)
  e_Si(HI) Jy.km/s [0/0.63] Error on Si(HI) (time.expo;phys.atmol.qn.L;arith.grad;time.age;meta.main)
  SNR   [1.2/989.8] Ratio of peak flux to rms noise ((unassigned);(unassigned);(unassigned);meta.id.PI;phot.flux.density;pos.lsr;meta.main)
  RMS mJy [1.37/17.99] The rms noise in the extracted spectrum at 10km/s resolution (time.equinox;(unassigned);arith.factor;meta.id.PI;phot.flux.density)
  Dist Mpc (n) [0.3/259.6] Adopted distance (time.expo;phys.pressure;arith.factor;em.UV.10-50nm;arith;meta.main)
  logM [Msun] (n) [3.76/10.94] HI mass in logarithmic solar units, where distance has been adopted ((unassigned);phys.veloc.orbital;arith.diff;(unassigned))
  HIc  HI source quality code (Note G2)   ((unassigned);(unassigned);(unassigned);pos.cartesian)
  OCc (char) Code for crossreference with SDSS (Note G3)   ((unassigned);(unassigned);(unassigned);pos.cartesian)
  T2 (char) [*] Flag indicating entry in Table 2 (3) (Note)   ((unassigned);(unassigned);(unassigned);pos.eq.dec)
  Simbad  ask the Simbad data-base about this object ((unassigned);(unassigned);(unassigned);pos.geocentric)
  NED  ask the NED data-base about this object ((unassigned);phys.veloc.orbital;arith.diff;pos.geocentric)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
Adapt form
 Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  

The following problems were encountered in this VizieR run:
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846446330 Where phase=3 and catid=51420170
**** 
**** --POSTGRES MSG db=1
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERROR:  invalid page in block 0 of relation base/16403/6104 
****ERROR:  invalid page in block 0 of relation base/16403/6104
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR275056.err (2026-10-27T19:58:47)
-3
-source=J/AJ/142/170/table1
-ref=VIZ6ae1027943270
elapse time 3