Dictionary of Nomenclature of Celestial Objects
(Last update: 02-Nov-2023)

Result of query: info cati WXD99]$

Details on Acronym:   [WXD99]
  
[WXD99] (Wei+Xu+Dong+, 1999)
 Write:<<[WXD99]  JHHMMSS.ss+DDMMSS.s>>
 N:  174
Object:(Opt)  (SIMBAD class: Unknown = Object of Unknown Nature)
  Note:ROSAT RASS observations.
    N=174 possible identifications of 156 X-ray sources.
   Ref:=1999A&AS..139..575W
     byWEI J.Y.
, XU D.W., DONG X.Y., HU J.Y.
 Astron. Astrophys., Suppl. Ser., 139, 575-599 (1999)

    An AGN sample with high x-ray-to-optical flux ratio from RASS. I. The
    optical identification.
oTable 2: <[WXD99] JHHMMSS.ss+DDMMSS.s> N=174.
=E=Catalogue in electronic form as J/A+AS/139/575
 Originof the Acronym: S = Created by Simbad, the CDS Database