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First detection of cyanamide (NH$_2$CN) towards solar-type protostars
hal.structure.identifier | AMOR 2018 | |
dc.contributor.author | COUTENS, Audrey | |
dc.contributor.author | WILLIS, E. R. | |
hal.structure.identifier | The Ohio State University [Columbus] [OSU] | |
dc.contributor.author | GARROD, R. T. | |
dc.contributor.author | MÜLLER, H. S. P. | |
dc.contributor.author | BOURKE, T. L. | |
dc.contributor.author | CALCUTT, H. | |
dc.contributor.author | DROZDOVSKAYA, M. N. | |
hal.structure.identifier | foreign laboratories [FL] | |
dc.contributor.author | JØRGENSEN, J. K. | |
dc.contributor.author | LIGTERINK, N. F. W. | |
dc.contributor.author | PERSSON, M. V. | |
dc.contributor.author | STÉPHAN, G. | |
dc.contributor.author | VAN DER WIEL, M. H. D. | |
hal.structure.identifier | Leiden Observatory [Leiden] | |
dc.contributor.author | VAN DISHOECK, E. F. | |
hal.structure.identifier | Center for Space and Habitability [CSH] | |
dc.contributor.author | WAMPFLER, S. F. | |
dc.date.issued | 2018 | |
dc.identifier.issn | 0004-6361 | |
dc.description.abstractEn | Searches for the prebiotically-relevant cyanamide (NH$_2$CN) towards solar-type protostars have not been reported in the literature. We here present the first detection of this species in the warm gas surrounding two solar-type protostars, using data from the Atacama Large Millimeter/Submillimeter Array Protostellar Interferometric Line Survey (PILS) of IRAS 16293-2422 B and observations from the IRAM Plateau de Bure Interferometer of NGC1333 IRAS2A. We furthermore detect the deuterated and $^{13}$C isotopologues of NH$_2$CN towards IRAS 16293-2422 B. This is the first detection of NHDCN in the interstellar medium. Based on a local thermodynamic equilibrium analysis, we find that the deuteration of cyanamide ($\sim$ 1.7%) is similar to that of formamide (NH$_2$CHO), which may suggest that these two molecules share NH$_2$ as a common precursor. The NH$_2$CN/NH$_2$CHO abundance ratio is about 0.2 for IRAS 16293-2422 B and 0.02 for IRAS2A, which is comparable to the range of values found for Sgr B2. We explored the possible formation of NH$_2$CN on grains through the NH$_2$ + CN reaction using the chemical model MAGICKAL. Grain-surface chemistry appears capable of reproducing the gas-phase abundance of NH$_2$CN with the correct choice of physical parameters. | |
dc.language.iso | en | |
dc.publisher | EDP Sciences | |
dc.rights.uri | http://creativecommons.org/licenses/by/ | |
dc.subject.en | Astrophysics - Solar and Stellar Astrophysics | |
dc.subject.en | Astrophysics - Astrophysics of Galaxies | |
dc.title.en | First detection of cyanamide (NH$_2$CN) towards solar-type protostars | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1051/0004-6361/201732346 | |
dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO] | |
dc.identifier.arxiv | 1712.09548 | |
bordeaux.journal | Astronomy and Astrophysics - A&A | |
bordeaux.page | id.A107 | |
bordeaux.volume | 612 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-01685042 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-01685042v1 | |
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=2018&rft.volume=612&rft.spage=id.A107&rft.epage=id.A107&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=COUTENS,%20Audrey&WILLIS,%20E.%20R.&GARROD,%20R.%20T.&M%C3%9CLLER,%20H.%20S.%20P.&BOURKE,%20T.%20L.&rft.genre=article |
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