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http://hdl.handle.net/2289/1390| Title: | Stimulated emission of carbon recombination lines from cold clouds in the direction of Cassiopeia A |
| Authors: | Payne, H.E. Anantharamaiah, K.R. Erickson, W.C. |
| Keywords: | carbon cassiopeia A line spectra molecular clouds radio sources (astronomy) recombination reactions stimulated emission H II regions ion production rates quantum numbers |
| Issue Date: | 15-Jun-1989 |
| Publisher: | The University of Chicago Press for the American Astronomical Society |
| Citation: | Astrophysical Journal, 1989, Vol.341, p 890-900 |
| Abstract: | Observations made at 10 frequencies in the 34-325-MHz range provide evidence for stimulated emission of carbon recombination lines in the direction of Cas A. Recombination lines have been detected in absorption below 115 MHz and in emission above 200 MHz. The observed intensities and widths of the lines have been employed to determine the properties of the intervening clouds and to constrain theoretical predictions of level populations in high quantum number states of carbon in cold clouds. |
| URI: | http://hdl.handle.net/2289/1390 |
| ISSN: | 0004-637X 1538-4357 (online) |
| Alternative Location: | http://adsabs.harvard.edu/cgi-bin/bib_query?1989ApJ...341..890P |
| Copyright: | (1989) by the American Astronomical Society. Scanned images provided by the NASA ADS Data System. |
| Appears in Collections: | Research Papers (A&A) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 1989 APJ V341 p890.pdf | 11p. | 2.24 MB | Adobe PDF | View/Open |
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