An X-ray active region in Orion : X-rays from a Herbig-Haro object ?
Abstract
The Imaging Proportional Counter on the Einstein X-ray Observatory has observed an approximately 1.0 deg square region in Orion centered near right ascension (1950) = 5 hours 34 min, declination = -6 deg 47 arcmin. This is an area containing a dark cloud with evidence for recent star formation and several Herbig-Haro objects. Some 25 stellar X-ray sources are found, and several are identified with stars which have X-ray luminosities at the upper end of the distribution of X-ray luminosity versus stellar type. In addition there is evidence for X-ray emission associated with HH 1 which can provide support for models which include strong stellar winds interacting with the interstellar medium.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1981
- DOI:
- 10.1086/159184
- Bibcode:
- 1981ApJ...248..591P
- Keywords:
-
- Herbig-Haro Objects;
- Orion Nebula;
- Stellar Radiation;
- X Ray Sources;
- Heao 2;
- Interstellar Matter;
- Main Sequence Stars;
- Molecular Clouds;
- Spaceborne Astronomy;
- Stellar Evolution;
- Stellar Luminosity;
- Stellar Winds;
- Astrophysics