The Spatial Distribution Of C-2, C-3, And NH In Comet 2P/Encke
| dc.contributor.utaustinauthor | Cochran, Anita L. | en_US |
| dc.creator | Dorman, Garrett | en_US |
| dc.creator | Pierce, Donna M. | en_US |
| dc.creator | Cochran, Anita L. | en_US |
| dc.date.accessioned | 2016-04-28T19:31:51Z | |
| dc.date.available | 2016-04-28T19:31:51Z | |
| dc.date.issued | 2013-12 | en |
| dc.description.abstract | We examine the spatial distribution of C-2, C-3, and NH radicals in the coma of comet Encke in order to understand their abundances and distributions in the coma. The observations were obtained from 2003 October 22-24, using the 2.7 m telescope at McDonald Observatory. Building on our original study of CN and OH, we have used our modified version of the vectorial model, which treats the coma as one large cone, in order to reproduce Encke's highly aspherical and asymmetric coma. Our results suggest that NH can be explained by the photodissociation of NH2, assuming that NH2 is produced rapidly from NH3 in the innermost coma. Our modeling of C-2 and C-3 suggests a multi-generational photodissociation process may be required for their production. Using the results of our previous study, we also obtain abundance ratios with respect to OH and CN. Overall, we find that Encke exhibits typical carbon-chain abundances, and the results are consistent with other studies of comet Encke. | en_US |
| dc.description.department | McDonald Observatory | en_US |
| dc.description.sponsorship | NASA's Planetary Astronomy program grant NNXG04G162G | en_US |
| dc.description.sponsorship | Office of the Vice President for Research and Economic Development at Mississippi State University | en_US |
| dc.identifier | doi:10.15781/T2DN6M | |
| dc.identifier.Filename | 2013_12_spatial.pdf | en_US |
| dc.identifier.citation | Dorman, Garrett, Donna M. Pierce, and Anita L. Cochran. "The Spatial Distribution of C2, C3, and NH in Comet 2P/Encke." The Astrophysical Journal, Vol. 778, No. 2 (Dec., 2013): 140. | en_US |
| dc.identifier.doi | 10.1088/0004-637x/778/2/140 | en_US |
| dc.identifier.issn | 0004-637X | en_US |
| dc.identifier.uri | http://hdl.handle.net/2152/34653 | |
| dc.language.iso | English | en_US |
| dc.relation.ispartof | en_US | |
| dc.relation.ispartofserial | Astrophysical Journal | en_US |
| dc.rights | Administrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University. | en_US |
| dc.rights.restriction | Open | en_US |
| dc.subject | astrochemistry | en_US |
| dc.subject | comets: general | en_US |
| dc.subject | comets: individual (encke) | en_US |
| dc.subject | molecular | en_US |
| dc.subject | processes | en_US |
| dc.subject | outgassing asymmetry | en_US |
| dc.subject | nucleus | en_US |
| dc.subject | encke | en_US |
| dc.subject | atmospheres | en_US |
| dc.subject | halley | en_US |
| dc.subject | bands | en_US |
| dc.subject | astronomy & astrophysics | en_US |
| dc.title | The Spatial Distribution Of C-2, C-3, And NH In Comet 2P/Encke | en_US |
| dc.type | Article | en_US |