Published March 1987
| Version v1
Journal article
1E 1048.5 + 5421 - a new 114 minute AM Herculis binary
Creators
- 1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA
- 2. Colorado Univ., Boulder
- 3. Steward Observatory, Tucson, AZ
Description
The discovery of a new AM Herculis binary system, found as a serendipitous Einstein X-ray source, is described. Like the previously discovered mass-transfer binaries involving synchronously rotating magnetic white-dwarf primaries, the system exhibits strong circular polarization, X-ray and optical continuum variations, and optical emission lines, all of which seem to be modulated with these binary periods of 114.5 + or - 0.2 minutes. Although all data are not concurrent, the new system appears to possess the highest ratio of F(x)/F(opt) yet found for an AM Her system. The surprising accumulation of AM Her variables with periods near 114 minute is commented on. 32 references
Additional details
Publishing Information
- Journal Title
- Astrophys. J.
- Journal Volume
- 314
- Series
- Astrophys. J.
- Journal Page Range
- 641-652
- ISSN
- 0004-637X
- CODEN
- ASJOA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18092100
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BINARY STARS; COSMIC X-RAY SOURCES; EMISSION SPECTRA; PHOTOMETRY; POLARIZATION; VARIATIONS; WHITE DWARF STARS; X RADIATION
- Descriptors DEC
- COSMIC RAY SOURCES; DWARF STARS; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; RADIATIONS; SPECTRA; STARS