Optical classification of 5 Swift hard X-ray sources

Details Optical classification of 5 Swift hard X-ray sources Optical classification of 5 Swift hard X-ray sources

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006atel..735....1m&link_type=abstract

The Astronomer's Telegram, #735

Astronomy and Astrophysics

Astronomy

9

Optical, X-Ray, Agn, Binaries

Scientific paper

Between February 6 and 10, 2006, we used the instrument BFOSC mounted on the `G.D. Cassini' 1.5m telescope of the Astronomical Observatory of Bologna located in Loiano (Italy) to acquire optical spectra of the counterparts to 5 hard X-ray sources recently discovered by Swift (see ATels #669, #677 and #697) in order to assess their nature. Total exposure times ranged from 40 to 80 minutes, depending on the object brightness.

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