The ultraviolet spectrum of the anomalous EUV-source halo star HD 192273.
Abstract
The proposed EUV source HD 192273 was observed with International Ultraviolet Explorer at both low and high resolution. Results of an analysis of the stellar and interstellar spectrum are presented. Strengths of interstellar absorption lines give a value for the column density of neutral hydrogen atoms, NH = 2.0 + or - 0.5 x 10 to the 20th power cm sq, making the proposed EUV identification untenable. The star appears to be a normal B2 V star with eB-V = 0.04 but an approximate distance of 0.5 kpc was derived from the IUE data and this leaves the star 4 magnitudes too faint for Be V.
- Publication:
-
Ultraviolet observations of Quasars
- Pub Date:
- April 1980
- Bibcode:
- 1980ESASP.157..353B
- Keywords:
-
- Astronomy;
- B Stars;
- Binary Stars;
- Dwarf Stars;
- Iue;
- Ultraviolet Astronomy;
- Absorption Spectra;
- Abundance;
- Emission Spectra;
- Flux Density;
- Hydrogen Atoms;
- Interstellar Matter;
- Lyman Alpha Radiation