An emission-line proper-motion star, GD 552.
Abstract
An emission-line blue star of small proper motion, GD 552, has been found among the suspected white dwarfs of the Lowell lists. It has a nearly flat continuum and strong Balmer emission lines, about 2000 km/s in width. Lowell photographs do not show any large variability, yet its spectrum resembles that of an old nova or U Gem star. It is interpreted as a white dwarf with a weak accretion disk, each contributing about one-half the light. Its absolute magnitude is about + 13, considerably fainter than the normally accepted value for U Gem stars.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- August 1978
- DOI:
- 10.1086/130360
- Bibcode:
- 1978PASP...90..460G
- Keywords:
-
- Balmer Series;
- Parallax;
- Stellar Motions;
- Stellar Spectrophotometry;
- White Dwarf Stars;
- Emission Spectra;
- H Lines;
- Stellar Mass Accretion;
- Astrophysics;
- Emission-Line Stars:Proper Motions;
- Emission-Line Stars:White Dwarfs