دورية أكاديمية
Herschel observations of EXtra-Ordinary Sources (HEXOS): Detection of hydrogen fluoride in absorption towards Orion KL
| العنوان: | Herschel observations of EXtra-Ordinary Sources (HEXOS): Detection of hydrogen fluoride in absorption towards Orion KL |
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| المؤلفون: | Phillips, T. G., Bergin, E. A., Lis, D. C., Neufeld, D. A., Bell, T. A., Wang, S., Crockett, N. R., Emprechtinger, M., Blake, G. A., Caux, E., Ceccarelli, C., Cernicharo, J., Comito, C., Daniel, F., Dubernet, M. -L., Encrenaz, P., Gerin, M., Giesen, T. F., Goicoechea, J. R., Goldsmith, P. F., Herbst, E., Joblin, C., Johnstone, D., Langer, W. D., Latter, W. D., Lord, S. D., Maret, S., Martin, P. G., Melnick, G. J., Menten, K. M., Morris, P., Müller, H. S. P., Murphy, J. A., Ossenkopf, V., Pearson, J. C., Pérault, M., Plume, R., Qin, S. -L., Schilke, P., Schlemmer, S., Stutzki, J., Trappe, N., van Der Tak, F. F. S., Vastel, C., Yorke, H. W., Yu, S., Zmuidzinas, J., Boogert, A., Güsten, R., Hartogh, P., Honingh, N., Karpov, A., Kooi, J., Krieg, J. -M., Schieder, R. |
| المساهمون: | Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Grenoble (LAOG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 0004-6361. |
| بيانات النشر: | HAL CCSD EDP Sciences |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | ISM: abundances, ISM: molecules, submillimeter: ISM, [SDU]Sciences of the Universe [physics], [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], phil, envir |
| الوصف: | International audience ; We report a detection of the fundamental rotational transition of hydrogen fluoride in absorption towards Orion KL using Herschel/HIFI. After the removal of contaminating features associated with common molecules (“weeds”), the HF spectrum shows a P-Cygni profile, with weak redshifted emission and strong blue-shifted absorption, associated with the low-velocity molecular outflow. We derive an estimate of 2.9 × 10 13 cm -2 for the HF column density responsible for the broad absorption component. Using our best estimate of the H 2 column density within the low-velocity molecular outflow, we obtain a lower limit of ~1.6 × 10 -10 for the HF abundance relative to hydrogen nuclei, corresponding to ~0.6% of the solar abundance of fluorine. This value is close to that inferred from previous ISO observations of HF J = 2-1 absorption towards Sgr B2, but is in sharp contrast to the lower limit of 6 × 10 -9 derived by Neufeld et al. for cold, foreground clouds on the line of sight towards G10.6-0.4. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | https://hal-insu.archives-ouvertes.fr/insu-03625646/file/aa14570-10.pdfTest; https://hal-insu.archives-ouvertes.fr/insu-03625646Test |
| الإتاحة: | https://doi.org/10.1051/0004-6361/201014570Test https://hal-insu.archives-ouvertes.fr/insu-03625646/file/aa14570-10.pdfTest https://hal-insu.archives-ouvertes.fr/insu-03625646Test |
| حقوق: | undefined |
| رقم الانضمام: | edsbas.BFE5391C |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |