A survey of circumstellar structure around young low mass stars
Abstract
We present results from a near-infrared array, CO interferometer, and H₂O maser interferometer survey of the circumstellar environments of 26 young low-luminosity embedded stars located in nearby molecular clouds. About 75% of the sample show evidence for stellar winds/outflows in the near-infrared or CO data indicating that most of these sources are in the early wind clearing phase of their evolution. Close to 15% are multiple on the scale of 20", suggesting that fragmentation of their surrounding dense cloud cores is important before or during gravitational collapse. Roughly 10% have H₂O maser emission and the kinematics imply the masers arise in gravitation ally unbound gas (i.e., a stellar wind or outflow) rather than in a circumstellar disk.
Additional Information
© Springer Science+Business Media Dordrecht 1991. This paper is dedicated to the memory of Gary Bailey who died on January 26. 1990. Gary pioneered the use of infrared arrays for astronomical use and was a good friend who will be sorely missed. Thanks to the Palomar crew for their usual good cheer as the new camera was installed and debugged. CAB thanks J. Bahcall for the hospitality of the Institute of Advanced Study during his sabbatical leave. Palomar Observatory is supported by a grant from the National Science Foundation. This work was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. This work was also supported by NASA grant 188-44-24-10. NSF grant AST 84-12473, and by a grant from the Caltech President's fund. The junctions used in the SIS receivers at OVRO were provided by R. E. Miller of AT&T Bell Labs.Additional details
- Eprint ID
- 106820
- DOI
- 10.1007/978-94-011-3384-5_35
- Resolver ID
- CaltechAUTHORS:20201124-174614869
- NASA/JPL/Caltech
- 188-44-24-10
- NASA
- AST 84-12473
- NSF
- Caltech President's Fund
- Created
-
2020-12-03Created from EPrint's datestamp field
- Updated
-
2023-04-25Created from EPrint's last_modified field
- Series Name
- International Astronomical Union Symposium (IAUS)
- Series Volume or Issue Number
- 147