Gas kinematics of key prebiotic molecules in GV Tau N revealed with an ALMA, PdBI, and Herschel synergy
| العنوان: | Gas kinematics of key prebiotic molecules in GV Tau N revealed with an ALMA, PdBI, and Herschel synergy |
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| المؤلفون: | Pablo Riviere-Marichalar, R. Le Gal, A. Fuente, M. Rodríguez-Baras, P. Pilleri, D. Navarro-Almaida, S. P. Treviño-Morales |
| المساهمون: | Institut de recherche en astrophysique et planétologie (IRAP), 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) |
| المصدر: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, 2020, 496, pp.5330-5340. ⟨10.1093/mnras/staa1919⟩ |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Astrochemistry, 010504 meteorology & atmospheric sciences, stars: individual (GV Tau N), FOS: Physical sciences, Kinematics, Astrophysics, 01 natural sciences, Planet, Ionization, 0103 physical sciences, Molecule, Primary component, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, stars: variables: T Tauri, Physics, Earth and Planetary Astrophysics (astro-ph.EP), stars: formation, astrochemistry, Near-infrared spectroscopy, Herbig Ae/Be, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, protoplanetary discs, 3. Good health, ISM: jets and outflows, Astrophysics - Solar and Stellar Astrophysics, [SDU]Sciences of the Universe [physics], 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Earth and Planetary Astrophysics, Circumbinary planet, Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | A large effort has been made to detect warm gas in the planet formation zone of circumstellar discs using space and ground-based near infrared facilities. GV Tau N, the most obscured component of the GV Tau system, is an outstanding source, being one of the first targets detected in HCN and the only one detected in CH$_4$ so far. Although near infrared observations have shed light on its chemical content, the physical structure and kinematics of the circumstellar matter remained unknown. We use interferometric images of the HCN 3-2 and $^{13}$CO 3-2 lines, and far-IR observations of $^{13}$CO, HCN, CN and H$_2$O transitions to discern the morphology, kinematics, and chemistry of the dense gas close to the star. These observations constitute the first detection of H$_2$O towards GV Tau N. Moreover, ALMA high spatial resolution (~ 7 au) images of the continuum at 1.1 mm and the HCN 3-2 line resolve different gas components towards GV Tau N, a gaseous disc with R~25 au, an ionized jet, and one (or two) molecular outflows. The asymmetric morphology of the gaseous disc shows that it has been eroded by the jet. All observations can be explained if GV Tau N is binary, and the primary component has a highly inclined individual disc relative to the circumbinary disc. We discuss the origin of the water and the other molecules emission according to this scenario. In particular, we propose that the water emission would come from the disrupted gaseous disc and the molecular outflows. 12 pages, 8 figures. Accepted for publication in MNRAS |
| اللغة: | English |
| تدمد: | 0035-8711 1365-2966 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a41f6b9eb5ea7f9be0141d2a3ec7608aTest http://arxiv.org/abs/2006.15065Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....a41f6b9eb5ea7f9be0141d2a3ec7608a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00358711 13652966 |
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