X-ray and optical measurements of the cataclysmic variable CH UMa.
Abstract
A program to identify optical counterparts of X-ray sources discovered with the Einstein Observatory has resulted in an independent identification of CH UMa as a cataclysmic variable. Spectrophotometric observations made with the Intensified Image Dissector Scanner on the 2.1-m telescope at KPNO revealed an emission line spectrum from an approximately 15 mag object similar to the spectra of cataclysmic variables. A subsequent search of the Harvard photographic plate collection revealed outbursts of 4 mag in amplitude.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 1982
- DOI:
- 10.1093/mnras/201.2.265
- Bibcode:
- 1982MNRAS.201..265B
- Keywords:
-
- Heao 2;
- Stellar Spectra;
- Stellar Spectrophotometry;
- Variable Stars;
- X Ray Astronomy;
- Astronomical Photography;
- Emission Spectra;
- Line Spectra;
- Astronomy