The Herbig Be/Ae Star MWC 1080 and Its Associated Molecular Cloud. I. Molecular Line Observations
Abstract
Molecular line and optical observations have been carried out for the Herbig Be/Ae star MWC 1080 as well as its nearby nebulosity and molecular cloud. This paper presents the results of molecular-line mapping observations. An area of 2' times 2' around the star was mapped for the J=1-0 transitions of CO, (13) CO, and CS with a grid spacings of 15('') . The CO observations have revealed the bipolar nature of molecular outflow; (13) CO\ and CS observations have disclosed a disk structure with a cavity or face-on doughnut-like structure. The diameters of the disk and the cavity are about 90({''\) } and 30({''\) } (1.1 pc and 0.36 pc), respectively. The physical parameters of bipolar flow are also derived.
- Publication:
-
Publications of the Astronomical Society of Japan
- Pub Date:
- April 1991
- Bibcode:
- 1991PASJ...43..363Y
- Keywords:
-
- A Stars;
- B Stars;
- Early Stars;
- Molecular Clouds;
- Molecular Flow;
- Nebulae;
- Astronomical Maps;
- Bipolarity;
- Carbon Monoxide;
- Carbon 13;
- Line Spectra;
- Stellar Spectra;
- Astrophysics;
- HERBIG BE/AE STARS;
- MOLECULAR CLOUDS;
- MOLECULAR OUTFLOW