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Revised spectroscopic parameters of SH from ALMA and IRAM 30 m observations
hal.structure.identifier | Physikalisches Institut, Universität zu Köln | |
dc.contributor.author | MÜLLER, Holger S. P. | |
hal.structure.identifier | Madrid | |
dc.contributor.author | GOICOECHEA, Javier R. | |
hal.structure.identifier | Madrid | |
dc.contributor.author | CERNICHARO, José | |
hal.structure.identifier | Madrid | |
dc.contributor.author | AGÚNDEZ, Marcelino | |
hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
hal.structure.identifier | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA] | |
hal.structure.identifier | Instrumentation et télédétection | |
hal.structure.identifier | Dynamique des milieux interstellaires et plasmas stellaires | |
dc.contributor.author | PETY, Jérôme | |
hal.structure.identifier | Madrid | |
dc.contributor.author | CUADRADO, Sara | |
hal.structure.identifier | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA] | |
hal.structure.identifier | Instrumentation et télédétection | |
hal.structure.identifier | Dynamique des milieux interstellaires et plasmas stellaires | |
dc.contributor.author | GERIN, Maryvonne | |
hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
dc.contributor.author | DUMAS, Gaëlle | |
hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
dc.contributor.author | CHAPILLON, Edwige | |
dc.date.created | 2014-09-05 | |
dc.date.issued | 2014 | |
dc.identifier.issn | 0004-6361 | |
dc.description.abstractEn | Hydrides represent the first steps of interstellar chemistry. Sulfanylium (SH<SUP> </SUP>), in particular, is a key tracer of energetic processes. We used ALMA and the IRAM 30 m telescope to search for the lowest frequency rotational lines of SH<SUP> </SUP> toward the Orion Bar, the prototypical photo-dissociation region illuminated by a strong UV radiation field. On the basis of previous Herschel/HIFI observations of SH<SUP> </SUP>, we expected to detect emission of the two SH<SUP> </SUP> hyperfine structure (HFS) components of the N<SUB>J</SUB> = 1<SUB>0</SUB>-0<SUB>1</SUB> fine structure (FS) component near 346 GHz. While we did not observe any lines at the frequencies predicted from laboratory data, we detected two emission lines, each ~15 MHz above the SH<SUP> </SUP> predictions and with relative intensities and HFS splitting expected for SH<SUP> </SUP>. The rest frequencies of the two newly detected lines are more compatible with the remainder of the SH<SUP> </SUP> laboratory data than the single line measured in the laboratory near 346 GHz and previously attributed to SH<SUP> </SUP>. Therefore, we assign these new features to the two SH<SUP> </SUP> HFS components of the N<SUB>J</SUB> = 1<SUB>0</SUB>-0<SUB>1</SUB> FS component and re-determine its spectroscopic parameters, which will be useful for future observations of SH<SUP> </SUP>, in particular if its lowest frequency FS components are studied. Our observations demonstrate the suitability of these lines for SH<SUP> </SUP> searches at frequencies easily accessible from the ground. | |
dc.language.iso | en | |
dc.publisher | EDP Sciences | |
dc.title.en | Revised spectroscopic parameters of SH from ALMA and IRAM 30 m observations | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1051/0004-6361/201424756 | |
dc.subject.hal | Physique [physics]/Astrophysique [astro-ph] | |
bordeaux.journal | Astronomy and Astrophysics - A&A | |
bordeaux.page | id.L5 | |
bordeaux.volume | 569 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-03730747 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-03730747v1 | |
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=2014&rft.volume=569&rft.spage=id.L5&rft.epage=id.L5&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=M%C3%9CLLER,%20Holger%20S.%20P.&GOICOECHEA,%20Javier%20R.&CERNICHARO,%20Jos%C3%A9&AG%C3%9ANDEZ,%20Marcelino&PETY,%20J%C3%A9r%C3%B4me&rft.genre=article |
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