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Discovery of H 2 CCCH + in TMC-1
| dc.contributor.author | SILVA, W. G. D. P. | |
| dc.contributor.author | CERNICHARO, J. | |
| dc.contributor.author | SCHLEMMER, S. | |
| dc.contributor.author | MARCELINO, N. | |
| dc.contributor.author | LOISON, J. -C. | |
| dc.contributor.author | AGÚNDEZ, M. | |
| dc.contributor.author | GUPTA, D. | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| dc.contributor.author | WAKELAM, V. | |
| dc.contributor.author | THORWIRTH, S. | |
| dc.contributor.author | CABEZAS, C. | |
| dc.contributor.author | TERCERO, B. | |
| dc.contributor.author | DOMÉNECH, J. L. | |
| dc.contributor.author | FUENTETAJA, R. | |
| dc.contributor.author | KIM, W. -J. | |
| dc.contributor.author | DE VICENTE, P. | |
| dc.contributor.author | ASVANY, O. | |
| dc.date.issued | 2023-07-25 | |
| dc.identifier.issn | 0004-6361 | |
| dc.description.abstractEn | Based on a novel laboratory method, 14 millimeter-wave lines of the molecular ion H 2 CCCH + have been measured in high resolution, and the spectroscopic constants of this asymmetric rotor determined with high accuracy. Using the Yebes 40 m and IRAM 30 m radio telescopes, we detected four lines of H 2 CCCH + toward the cold dense core TMC-1. With a dipole moment of about 0.55 D obtained from high-level ab initio calculations, we derive a column density of 5.4±1×10 11 cm −2 and 1.6±0.5×10 11 cm −2 for the ortho and para species, respectively, and an abundance ratio N(H 2 CCC)/N(H 2 CCCH + ) = 2.8±0.7. The chemistry of H 2 CCCH + is modeled using the most recent chemical network for the reactions involving the formation of H 2 CCCH + . We find a reasonable agreement between model predictions and observations, and new insights into the chemistry of C 3 -bearing species in TMC-1 were obtained. | |
| dc.language.iso | en | |
| dc.publisher | EDP Sciences | |
| dc.rights.uri | http://creativecommons.org/licenses/by/ | |
| dc.title.en | Discovery of H 2 CCCH + in TMC-1 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1051/0004-6361/202347174 | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA] | |
| dc.identifier.arxiv | 2307.01733 | |
| bordeaux.journal | Astronomy and Astrophysics - A&A | |
| bordeaux.page | L1 | |
| bordeaux.volume | 676 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-04292056 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-04292056v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2023-07-25&rft.volume=676&rft.spage=L1&rft.epage=L1&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=SILVA,%20W.%20G.%20D.%20P.&CERNICHARO,%20J.&SCHLEMMER,%20S.&MARCELINO,%20N.&LOISON,%20J.%20-C.&rft.genre=article |
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