Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pasp..114..253b&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 114, Issue 792, pp. 253-256.
Astronomy and Astrophysics
Astronomy
1
Galaxies: Individual: Ngc Number: Ngc 5548, Galaxies: Seyfert, Galaxies: Quasars: General, X-Rays: Galaxies
Scientific paper
New spectrophotometric observations are presented for three blue stellar objects pinpointed as candidate optical identifications of ROSAT X-ray point sources in the field around the Seyfert 1 galaxy NGC 5548. They are shown to be medium-redshift QSOs. In combination with cataloged data on QSOs in several square degrees around NGC 5548, the areal density of QSOs immediately around the galaxy may exceed the average values determined from various surveys. This result, together with the configuration, suggests that these QSOs may be physically associated with NGC 5548.
Burbidge Geoffrey
Burbidge Margaret. E.
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