Published August 21, 2014
| Published + Submitted
Journal Article
Open
A CSO Search for l-C_3H^+: Detection in the Orion Bar PDR
Abstract
The results of a Caltech Submillimeter Observatory (CSO) search for l-C_3H^+, first detected by Pety et al. (2012) in observations toward the Horsehead photodissociation region (PDR), are presented. A total of 39 sources were observed in the 1 mm window. Evidence of emission from l-C_3H^+ is found in only a single source - the Orion Bar PDR region, which shows a rotational temperature of 178(13) K and a column density of 7(2) × 10^(11) cm^(−2). In the remaining sources, upper limits of ~10^(11) − 10^(13) cm^(−2) are found. These results are discussed in the context of guiding future observational searches for this species.
Additional Information
© The Authors 2014. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2014 May 27. Received 2014 May 7; in original form 2014 March 31. First published online June 26, 2014. The authors express their sincere gratitude to the staff of the CSO, in particular S. Radford, R. Chamberlin, E. Bufil, B. Force, H. Yoshida, and D. Bisel. We thank the anonymous referee for helpful comments which have improved the quality of this manuscript. BAM is funded by an NSF Graduate Research Fellowship. Support for this work was provided in part by the National Science Foundation. JLS was supported by SLWW's startup funds, provided by Emory University, and by the Emory Summer Undergraduate Research at Emory (SURE) program, which is partially supported by the Howard Hughes Medical Institute. We thank N. Wehres, T. Cross, M. Radhuber, J. Laas, J. Kroll, and B. Hays for assistance in CSO observations and data reduction. We thank M. Sumner, F. Rice, and J. Zmuidzinas for technical support with the prototype receiver and assistance in data collection for the Orion-KL spectrum. We thank D. Lis, M. Emprechtinger, P. Schilke, and C. Comito for helpful discussions regarding the analysis of line surveys and deconvolution of DSB spectra, and T. Phillips for his guidance and support. We also thank the support staff from Caltech and Emory. The CSO is operated by the California Institute of Technology under contract from the National Science Foundation. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.Attached Files
Published - MNRAS-2014-McGuire-2901-8.pdf
Submitted - 1405.7057v1.pdf
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Additional details
- PMCID
- PMC5166968
- Eprint ID
- 46294
- Resolver ID
- CaltechAUTHORS:20140617-071742273
- NSF Graduate Research Fellowship
- Emory University
- Howard Hughes Medical Institute (HHMI)
- AST-0838261
- NSF
- Created
-
2014-06-17Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences