Classification of Four Swift/BAT Hard X-ray Sources with Bright Optical Counterparts
Abstract
Spectroscopic classifications of three sources from the Swift BAT 70-Month Hard X-ray Survey (Baumgartner et al. 2012) were made on 2013 July 4 UT using the MDM Observatory 2.4m Hiltner telescope with the Boller and Chivens CCD spectrograph. The wavelength coverage was 3900-7500 Å at 8 Å resolution. Conditions were partly cloudy.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- July 2013
- Bibcode:
- 2013ATel.5208....1H
- Keywords:
-
- Infra-Red;
- Optical;
- X-ray;
- AGN;
- Binary