SIMBAD references

1996A&A...316...57A - Astronomy and Astrophysics, volume 316, 57-78 (1996/12-1)

X-ray observations of five galaxy-quasar associations.


Abstract (from CDS):

Five examples of close associations of quasars with bright, low redshift galaxies have been observed in X-ray wavelengths with ROSAT. In the three cases where the galaxies are detected strongly, the nuclei of the galaxies have X-ray extensions in the direction of the adjacent quasars. In all cases the active galaxies and bright quasars are located at the origin of apparent lines or pairs of X-ray sources, some involving filamentary X-ray connections to fainter quasars or candidate blue stellar objects. A number of X-ray sources in these fields are found to be in excess of average background values. The filaments and connections have measured fluxes of 0.1≲FX≲2x10–13erg/cm2/s and they tend to radiate more strongly in the harder end of the 0.1-2.4keV energy band. Tables of positions and properties of the detected X-ray sources in each field are given and candidates for optical identifications are described.

Abstract Copyright:

Journal keyword(s): galaxies: distances and redshifts - general - interactions - quasars: general - X-rays: galaxies

Nomenclature: Tables 2b: [A96] Mrk 474 NN (Nos 1-25). Table 3: [A96] Mrk 474 a(Nos a-e). Table 5: [A96] NGC 4651 NN (Nos 1-24). Table 6: [A96] NGC 3 067 NN (Nos 1-21). Table 8: [A96] Mrk 205 NN (Nos 1-12, 18). Table 9: [A96] Mrk 2 05 a (Nos a-c). Table 10: [A96] 3C 309.1 N (Nos 1-6). Table 11: [A96] 3C 30 9.1 a (Nos a-f). Table 12: [A96] 3C 232 a (Nos a-f), <%M [A96] 3C 232 a'>

CDS comments: BSOI = QSO 1432+489

Simbad objects: 109

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