Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20711602m&link_type=abstract
American Astronomical Society Meeting 207, #116.02; Bulletin of the American Astronomical Society, Vol. 37, p.1354
Astronomy and Astrophysics
Astronomy
Scientific paper
J170902+641728 is a highly unusual galaxy. In ground-based optical images, it is unresolved (<1″ ) and thus appears to be a fairly faint star. However, sensitive radio continuum observations of the galaxy cluster A2255 associated it with a radio source. Although this would suggest the object is a quasar, its redshift (z=0.0896) derived from its optical spectrum reveals it to lie at the high end of A2255's velocity distribution. Decomposition of the spectrum reveals the presence of a broad line region and an implied black hole mass of ˜ 5 × 105 M&sun;. Similarly, higher resolution radio observations made with the VLA+PT indicate the source is unresolved down to a linear size scale of under 100 pc. The presence of a moderately strong AGN in a compact and low mass galaxy makes J170902+641728 an intriguing object. We present the available data and discuss their implications.
Anderson Kurt S.
Miller Nancy A.
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