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Formation of CH^{+}: Shock Chemistry in NGC 7027
| dc.contributor.author | ANDERSON, Julie K. | |
| dc.contributor.author | ZIURYS, Lucy M. | |
| hal.structure.identifier | FORMATION STELLAIRE 2013 | |
| dc.contributor.author | HERPIN, Fabrice | |
| dc.date.conference | 2013 | |
| dc.description.abstractEn | The formation of CH^{+} in the interstellar medium has been an enigma for the past 70 years. Emission from the species is found in diffuse material, even though the major pathway leading to the species, C^{+} + H{_2}, is endothermic by 0.40 eV. The barrier for this reaction can be greatly reduced if the H{_2} is vibrationally excited. Using the Heterodyne Instrument for the Far Infrared (HIFI) on board the Herschel Space Observatory, we have mapped CH^{+} (J=1 → 0), CH^{+} (J=2 → 1), and C^{+} (J=3/2 → 1/2) across the face of the young planetary nebula, NGC 7027. Analysis of the spectra has shown that CH^{+}, C^{+}, and vibrationally excited H{_2} apparently trace the same outflow in NGC 7027. Therefore CH^{+} in this nebula likely forms from the activated C^{+} + H{_2} reaction. Spectral maps, temperatures, and abundances of CH^{+} will be presented along with spectral maps of C^{+}. | |
| dc.language.iso | en | |
| dc.subject.en | ASTRONOMICAL SPECIES AND PROCESSES | |
| dc.title.en | Formation of CH^{+}: Shock Chemistry in NGC 7027 | |
| dc.type | Communication dans un congrès | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| bordeaux.conference.title | 68th International Symposium on Molecular Spectroscopy, held 17-21 June, 2013 at Ohio State University. Abstract id. #ETI03 | |
| bordeaux.country | US | |
| bordeaux.conference.city | Ohio | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00858383 | |
| hal.version | 1 | |
| hal.invited | non | |
| hal.proceedings | non | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00858383v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=ANDERSON,%20Julie%20K.&ZIURYS,%20Lucy%20M.&HERPIN,%20Fabrice&rft.genre=unknown |
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