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Identification of selected sources from the ROSAT Galactic Plane Survey - I | | C. Motch
; P. Guillout
; F. Haberl
; J. Krautter
; M.W. Pakull
; W. Pietsch
; K. Reinsch
; W. Voges
; F.-J. Zickgraf
; | | Date: |
16 Dec 1997 | | Subject: | astro-ph | | Abstract: | We report on optical searches in the error circles of 93 ROSAT survey sources located at low galactic latitudes (|b| < 20 deg). These sources were extracted from the ROSAT Galactic Plane Survey using various selection criteria on hardness ratio, X-ray and optical brightness and integrated galactic absorption in the direction of the source. We find optical identifications in 76 cases, among which are 25 new AGN, 6 new CVs and a new Be/X-ray binary. In order to illustrate the relevance of the source selections applied here, we cross-correlated the ROSAT all-sky survey bright source list with SIMBAD. Different classes of X-ray emitters populate distinct regions of a multi dimensional parameter space involving flux ratios, galactic latitude and Nh. This relatively good segregation offers the possibility to build source samples with enhanced probability of identification with a given class. Complete optical identification of such subsamples could eventually be used to compute meaningful probabilities of identification for all sources using as basis a restricted set of multi-wavelength information. | | Source: | arXiv, astro-ph/9712208 | | Services: | Forum | Review | PDF | Favorites | |
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