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/ApJ/559/864
  Extragalactic ultracompact H II regions (Johnson+, 2001)
ReadMe+ftp
2001ApJ...559..864J
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/559/864/ngc6946(c)Ultra-dense HII candidates in NGC 6946 (adopted distance: 5.1Mpc) (16 rows)
2.J/ApJ/559/864/m33(c)Ultra-dense HII candidates in M33 (adopted distance: 840kpc) (14 rows)
3.J/ApJ/559/864/ngc0253(c)Ultra-dense HII candidates in NGC 253 (adopted distance: 2.5Mpc) (5 rows)
Help Xmatch is

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. ((unassigned);(unassigned);(unassigned);phys.veloc)
   (ALL)[JKM2001]  Source identification (NGC 6946 NN) ((unassigned);phys.atmol.qn.I;arith.grad;spect.line.veloc;arith)
   (ALL)RAJ2000 "h:m:s" Right ascension (J2000) (Note 1)   ((unassigned);(unassigned);(unassigned);(unassigned);arith)
   (ALL)DEJ2000 "d:m:s" Declination (J2000) (Note 1)   ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  (1)L6cm 10+17W/Hz6cm luminosity ((unassigned);phys.veloc.orbital;arith.diff;(unassigned);stat.interval;(unassigned))
  (1)e_L6cm 10+17W/Hzrms uncertainty on L6cm ((unassigned);phys.veloc.orbital;arith.diff;time.age;meta.main)
  (1)n_L6cm (char) [*] Note on L6cm (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.orbital)
  (1)L20cm 10+17W/Hz20cm luminosity ((unassigned);(unassigned);(unassigned);(unassigned);stat.interval;(unassigned))
  (1)e_L20cm 10+17W/Hzrms uncertainty on L20cm ((unassigned);phys.veloc.orbital;arith.diff;time.age;meta.main)
  (1)n_L20cm (char) [*] Note on L20cm (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.orbital)
   (ALL)QLyc 10+49s-1 Production rate of Lyman continuum photon ((unassigned);(unassigned);(unassigned);time.duration;(unassigned);(unassigned))

ALL cols		    
 (i)indexed column
   (ALL)e_QLyc 10+49s-1 rms uncertainty on QLyc ((unassigned);(unassigned);(unassigned);time.age;meta.main)
   (ALL)SI  Spectral index 20cm to 6cm ((unassigned);(unassigned);(unassigned);phys.abund.Y;(unassigned);(unassigned))
   (ALL)e_SI  rms uncertainty on SI ((unassigned);phys.veloc.orbital;arith.diff;time.age;meta.main)
  (1)R (char) R-band counterpart ? ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.orbital)
  (1+3)Halpha (char) H{alpha} counterpart ? ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.orbital)
  (1)[LDG97]  Lacey et al. (1997ApJS..109..417) number ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  (2)L6cm 10+16W/Hz6cm luminosity ((unassigned);(unassigned);(unassigned);(unassigned);stat.interval;(unassigned))
  (2)e_L6cm 10+16W/Hzrms uncertainty on L6cm ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (2)L20cm 10+16W/Hz20cm luminosity ((unassigned);phys.veloc.orbital;arith.diff;(unassigned);stat.interval;(unassigned))
  (2)e_L20cm 10+16W/Hzrms uncertainty on L20cm ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (2)B (char) B-band counterpart ? ((unassigned);(unassigned);(unassigned);phys.veloc.orbital)
  (2)HII (char) HII counterpart ? (Note 1)   ((unassigned);(unassigned);(unassigned);phys.veloc.orbital)
  (2)[GDK99]  Gordon et al. (1999, Cat. J/ApJS/120/247 number ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc)

ALL cols		    
 (i)indexed column
  (3)L1.3cm 10+17W/Hz1.3cm luminosity ((unassigned);(unassigned);(unassigned);(unassigned);stat.interval;(unassigned))
  (3)e_L1.3cm 10+17W/Hzrms uncertainty on L1.3cm ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (3)L2cm 10+17W/Hz(n) 2cm luminosity ((unassigned);(unassigned);(unassigned);(unassigned);stat.interval;(unassigned))
  (3)e_L2cm 10+17W/Hz(n) rms uncertainty on L2cm ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (3)L3.6cm 10+17W/Hz3.6cm luminosity ((unassigned);(unassigned);(unassigned);(unassigned);stat.interval;(unassigned))
  (3)e_L3.6cm 10+17W/Hzrms uncertainty on L3.6cm ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (3)I (char) I-band counterpart ? ((unassigned);(unassigned);(unassigned);phys.veloc.orbital)
  (3)[AU88] (char) Ulvestad & Antonucci (1997ApJ...488..621U) number ((unassigned);(unassigned);(unassigned);spect.line.veloc)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  

The following problems were encountered in this VizieR run:
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846434589 Where phase=3 and catid=15590864
**** 
**** --POSTGRES MSG db=0
**** 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 
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846434589 Where phase=3 and catid=15590864
**** 
**** --POSTGRES MSG db=0
**** 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/VR82228.err (2026-10-27T16:43:08)
-3
-source=J/ApJ/559/864
-ref=VIZ6ae0d49d14134
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