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Revised spectroscopic parameters of SH$^+$ from ALMA and IRAM 30 m observations
dc.contributor.author | MÜLLER, Holger S. P. | |
dc.contributor.author | GOICOECHEA, Javier | |
hal.structure.identifier | Departamento de Astrofísica Molecular e Infrarroja [DAMIR] | |
dc.contributor.author | CERNICHARO, José | |
dc.contributor.author | AGÚNDEZ, M. | |
hal.structure.identifier | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA] | |
hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
dc.contributor.author | PETY, Jérôme | |
dc.contributor.author | CUADRADO, Sara | |
hal.structure.identifier | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA] | |
dc.contributor.author | GERIN, Maryvonne | |
hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
dc.contributor.author | DUMAS, Gaelle | |
hal.structure.identifier | AMOR 2014 | |
hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
dc.contributor.author | CHAPILLON, E. | |
dc.date.accessioned | 2021-07-07T16:16:07Z | |
dc.date.available | 2021-07-07T16:16:07Z | |
dc.date.created | 2014-09-05 | |
dc.date.issued | 2014 | |
dc.identifier.issn | 0004-6361 | |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/96085 | |
dc.description.abstractEn | Hydrides represent the first steps of interstellar chemistry. Sulfanylium (SH$^+$), 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$^+$ 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$^+$, we expected to detect emission of the two SH$^+$ hyperfine structure (HFS) components of the $N_J = 1_0 - 0_1$ 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 $\sim$15 MHz above the SH$^+$ predictions and with relative intensities and HFS splitting expected for SH$^+$. The rest frequencies of the two newly detected lines are more compatible with the remainder of the SH$^+$ laboratory data than the single line measured in the laboratory near 346 GHz and previously attributed to SH$^+$. Therefore, we assign these new features to the two SH$^+$ HFS components of the $N_J = 1_0 - 0_1$ FS component and re-determine its spectroscopic parameters, which will be useful for future observations of SH$^+$, in particular if its lowest frequency FS components are studied. Our observations demonstrate the suitability of these lines for SH$^+$ 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]/Physique [physics]/Agrégats Moléculaires et Atomiques [physics.atm-clus] | |
dc.identifier.arxiv | 1409.1807 | |
bordeaux.journal | Astronomy and Astrophysics - A&A | |
bordeaux.page | id.L5 | |
bordeaux.volume | 569 | |
bordeaux.hal.laboratories | Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804 | * |
bordeaux.institution | CNRS | |
bordeaux.institution | Université de Bordeaux | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-01062001 | |
hal.version | 1 | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-01062001v1 | |
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&CERNICHARO,%20Jos%C3%A9&AG%C3%9ANDEZ,%20M.&PETY,%20J%C3%A9r%C3%B4me&rft.genre=article |
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