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J/A+A/666/A31
  Sgr B2 UCHII regions in 6, 22.4 and 96GHz (Meng+, 2022)
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2022A&A...666A..31M
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1.J/A+A/666/A31/tableb2Derived physical parameters of UCHII regions (54 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. (meta.record)
  ID   [1/54] Identifier (meta.id;meta.main)
  rcalc 10-3pc Calculated Radius of UCHII regions (phys.angSize;src)
  EM 10+7pc/cm^6Emission measure (phys.emissMeasure)
  log(N'Ly) [s-1] Log of Lyman continuum flux (phot.flux.density;spect.continuum)
  ne 10+4cm-3 Electron number density (meta.id)
  nH2 10+6cm-3 (n) Neutral gas number density in H2 (meta.number;phys.density)
  ri 10-3pc Initial radius of HII regions (phys.angSize;src)
  T 10+4yr Expansion-time of HII regions (time.epoch)

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