Jets from young stars : the case of R Monocerotis.
Abstract
Both components of a highly collimated bipolar outflow from the young star R Mon have been discovered, using the 2.2-m telescope of the Calar Alto Observatory (CAO). The reciprocal dispersion of the Cassegrain spectrograph was 26 A per mm near H-alpha with a resolution correponding to about 100 km/s. A coude spectrogram was also obtained with a p.a. of 350 deg through R Mon. The S II line emission regions at 6716 and 6731 A are situated in narrow extensions on the opposite sides of R Mon along a line joining R Mon and HH 39. The situation indicates that outflow to HH 39 is still occurring. The velocities measured for the two flow regions are -74 (+ or 10 km/s), and 168 (+ or - 10 km/s), respectively. It is argued that the flow collimation occurs within 2000 AU from the star.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1984
- DOI:
- 10.1086/184401
- Bibcode:
- 1984ApJ...287L..73B
- Keywords:
-
- Early Stars;
- Herbig-Haro Objects;
- Spectrograms;
- Stellar Spectra;
- Stellar Winds;
- Variable Stars;
- Carbon Monoxide;
- Cassegrain Optics;
- Collimation;
- Molecular Clouds;
- Peculiar Stars;
- Radio Astronomy;
- Shock Waves;
- Astrophysics