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/AN/321/81
  Orion Trapezium area ROSAT PSPC obs. II. (Lohother/mann+, 2000)
ReadMe+ftp
2000AN....321...81L
Similar Catalogs
Post annotation 		img(gal)
1.J/AN/321/81/table1(c)Properties of ROSAT PSPC X-ray sources in the Orion Trapezium area (316 rows)
2.J/AN/321/81/notesRemarks on individual sources (table2) (239 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. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
   (ALL)ROS-ORI  (i) [1/316] Sequential number (Note 1)   ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  (1)n_ROS-ORI (char) [*] indicates a note in notes.dat file ((unassigned);(unassigned);(unassigned);phys.veloc.orbital)
  (1)RAJ2000 "h:m:s" Right ascension (J2000.0) (stat.error;src.veloc.gc;arith.factor;(unassigned);arith)
  (1)DEJ2000 "d:m:s" Declination (J2000.0) ((unassigned);instr.background;stat.min;(unassigned);arith)
  (1)phi arcmin Off-axis angle ((unassigned);(unassigned);(unassigned);spect.line.broad.Stark)
  (1)eta ct/ks Source count rate ((unassigned);phys.veloc.orbital;arith.diff;time.duration;(unassigned);(unassigned))
  (1)S/N  Signal to noise ratio ((unassigned);(unassigned);(unassigned);meta.abstract;meta.main)
  (1)RX arcsec Apparent source radius (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;time.period.rotation)
  (1)HR2  Hardness ratio HR2 (Note 3)   ((unassigned);(unassigned);(unassigned);meta.abstract;instr.offset)
  (1)e_HR2  rms uncertainty on HR2 ((unassigned);phys.veloc.orbital;arith.diff;time.age;meta.main)
  (1)Var (char) [PV] Variablity type (Note 4)   ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.orbital)
   (ALL)Rem (char) Remarks (Note 5)   ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.orbital)

ALL cols		    
 (i)indexed column
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usage  Display UCD1+    UCD1  

The following problems were encountered in this VizieR run:
#***ucdid(5467500002652) can't be interpreted in column: RAJ2000
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR528982.err (2026-09-26T12:28:48)
-3
-source=J/AN/321/81
-ref=VIZ6ab7ba8181256
elapse time 3