A Caltech Library Service

A CSO Search for l-C_3H^+: Detection in the Orion Bar PDR

McGuire, Brett A. and Carroll, P. Brandon and Sanders, James L., III and Widicus Weaver, Susanna L. and Blake, Geoffrey A. and Remijan, Anthony J. (2014) A CSO Search for l-C_3H^+: Detection in the Orion Bar PDR. Monthly Notices of the Royal Astronomical Society, 442 (4). pp. 2901-2908. ISSN 0035-8711. PMCID PMC5166968.

PDF - Published Version
See Usage Policy.

PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper CentralArticle
McGuire, Brett A.0000-0003-1254-4817
Carroll, P. Brandon0000-0002-3191-5401
Blake, Geoffrey A.0000-0003-0787-1610
Remijan, Anthony J.0000-0001-9479-9287
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.
Funding AgencyGrant Number
NSF Graduate Research FellowshipUNSPECIFIED
Emory UniversityUNSPECIFIED
Howard Hughes Medical Institute (HHMI)UNSPECIFIED
Subject Keywords:astrochemistry, ISM: clouds, ISM: molecules
Issue or Number:4
PubMed Central ID:PMC5166968
Record Number:CaltechAUTHORS:20140617-071742273
Persistent URL:
Official Citation:Brett A. McGuire, P. Brandon Carroll, James L. Sanders III, Susanna L. Widicus Weaver, Geoffrey A. Blake, and Anthony J. Remijan A CSO search for l-C3H+: detection in the Orion Bar PDR MNRAS (August 21, 2014) Vol. 442 2901-2908 doi:10.1093/mnras/stu1047 First published online June 26, 2014
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46294
Deposited By: Ruth Sustaita
Deposited On:17 Jun 2014 17:54
Last Modified:09 Mar 2020 13:19

Repository Staff Only: item control page