A proposed chemical scheme for HCCO formation in cold dense clouds
| hal.structure.identifier | AMOR 2015 | |
| dc.contributor.author | WAKELAM, Valentine | |
| dc.contributor.author | LOISON, J.-C. | |
| dc.contributor.author | HICKSON, K. M. | |
| hal.structure.identifier | AMOR 2015 | |
| dc.contributor.author | RUAUD, M. | |
| dc.date.issued | 2015 | |
| dc.identifier.issn | 1745-3925 | |
| dc.description.abstractEn | The ketenyl radical (HCCO) has recently been discovered in two cold dense clouds with a non-negligible abundance of a few 10-11 (compared to H2). Until now, no chemical network has been able to reproduce this observation. We propose here a chemical scheme that can reproduce HCCO abundances together with HCO, H2CCO and CH3CHO in the dark clouds Lupus-1A and L486. The main formation pathway for HCCO is the OH + CCH → HCCO + H reaction as suggested by Agúndez et al. but with a much larger rate coefficient than used in current models. Since this reaction has never been studied experimentally or theoretically, this larger value is based on a comparison with other similar systems. | |
| dc.language.iso | en | |
| dc.publisher | Wiley-Blackwell | |
| dc.subject.en | astrochemistry | |
| dc.subject.en | ISM: abundances | |
| dc.subject.en | ISM: clouds | |
| dc.subject.en | ISM: molecules | |
| dc.title.en | A proposed chemical scheme for HCCO formation in cold dense clouds | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1093/mnrasl/slv097 | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO] | |
| dc.identifier.arxiv | 1509.00336 | |
| bordeaux.journal | Monthly Notice- Royal Astronomical Society -Letters- | |
| bordeaux.page | L48-L52 | |
| bordeaux.volume | 453 | |
| bordeaux.issue | 1 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01198427 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01198427v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Monthly%20Notice-%20Royal%20Astronomical%20Society%20-Letters-&rft.date=2015&rft.volume=453&rft.issue=1&rft.spage=L48-L52&rft.epage=L48-L52&rft.eissn=1745-3925&rft.issn=1745-3925&rft.au=WAKELAM,%20Valentine&LOISON,%20J.-C.&HICKSON,%20K.%20M.&RUAUD,%20M.&rft.genre=article |
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