Optical classification of 3 Swift southern hard X-ray sources

Details Optical classification of 3 Swift southern hard X-ray sources Optical classification of 3 Swift southern hard X-ray sources

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006atel..785....1m&link_type=abstract

The Astronomer's Telegram, #785

Astronomy and Astrophysics

Astronomy

7

Optical, X-Ray, Agn

Scientific paper

In order to identify the nature of 3 hard X-ray sources recently discovered by Swift (see ATels #669 and #677), we acquired optical spectra of their counterparts at the 1.5m telescope of the Cerro Tololo Interamerican Observatory (Chile) using the R-C spectrograph on the nights of March 21 and 22, 2006. Total exposure times ranged from 15 to 40 minutes, depending on the object brightness.

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