A Comparison of the Radio Continuum and Optical Properties of the HH Objects in Cepheus A West (GGD 37)
Abstract
In addition to the previously detected HW object, radio emission is now reported from six Herbig-Haro objects in Cepheus A West (GGD 37). The radio proper motion of one object has been measured. In general, there is a displacement in position of the stronger radio and H-alpha objects, and this, together with H-alpha and H2 observations by others, enables some of the properties of the 'working volume' of the radiative shock producing them to be defined; it also enables a description to be made of the interface where it is suggested the high-velocity (about 1000 km/s) stellar wind is converted to the lower velocity (about 20 km/s) molecular outflow, and to define the direction of origin of the shock. The only other HH objects from which radio emission had been detected previously are HH 1-2, and more recently HH-80-81.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1990
- DOI:
- 10.1086/169109
- Bibcode:
- 1990ApJ...360..215H
- Keywords:
-
- Continuous Spectra;
- Herbig-Haro Objects;
- Radio Sources (Astronomy);
- Cepheus Constellation;
- Stellar Models;
- Stellar Motions;
- Astrophysics;
- NEBULAE: INDIVIDUAL NAME: CEPHEUS A;
- STARS: PRE--MAIN-SEQUENCE;
- STARS: RADIO RADIATION