The unique object KR Aurigae
Abstract
Six spectrograms of the peculiar variable star KR Aurigae are evaluated which were obtained over the wavelength range from 3700 to 5000 A with a dispersion of 92 A/mm. The H-beta line profile is found to provide evidence that material is being accreted by the star at a mean velocity of 3200 km/s. Polarization measurements and UBV estimates are reported which indicate that KR Aur might be a black hole. The distance of KR Aur is estimated to be 300 + or - 150 pc in terms of the black-hole model of Bisnovatyi-Kogan and Ruzmaikin (1974).
- Publication:
-
Soviet Astronomy Letters
- Pub Date:
- June 1977
- Bibcode:
- 1977SvAL....3..143P
- Keywords:
-
- Stellar Spectrophotometry;
- Variable Stars;
- Visual Photometry;
- Black Holes (Astronomy);
- H Beta Line;
- H Gamma Line;
- Polarization Characteristics;
- Stellar Mass Accretion;
- Astronomy;
- STELLAR SPECTROPHOTOMETRY;
- VARIABLE STARS;
- VISUAL PHOTOMETRY;
- BLACK HOLES (ASTRONOMY);
- H BETA LINE;
- H GAMMA LINE;
- POLARIZATION CHARACTERISTICS;
- STELLAR MASS ACCRETION