A white-dwarf search at the south galactic pole.
Abstract
The Lowell Observatory G and GD stars to visual magnitude 17 and within 10 deg of the south galactic pole have been observed in a modified Stromgren photometric system. Twenty-three white dwarfs were found, including five already known, leading to a number density for these blue degenerates of 1 per 0.001 cu pc. Forty-two of the stars are probably halo objects of spectral types F and G, and the remaining 23 stars include blue stragglers, horizontal-branch stars, and one possible ultrashort-period halo variable.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1978
- DOI:
- 10.1086/156621
- Bibcode:
- 1978ApJ...226..411E
- Keywords:
-
- Astronomical Photometry;
- Southern Hemisphere;
- White Dwarf Stars;
- Astronomical Catalogs;
- Color;
- Halos;
- Astronomy;
- Stellar Statistics:White Dwarfs;
- Stroemgren Photometry:White Dwarfs;
- White Dwarfs: Surveys