Detection of warm water vapour in Taurus protoplanetary discs by Herschel
Astronomy and Astrophysics 538 (2012): L3 reproduced with permission from Astronomy & Astrophysics
| Authors: | ; ; ; ; ; ; ; ; ; ; ; ; ; ; |
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| Format: | Article |
| Publication date: | 2012 |
| Country: | España |
| Institution: | Universidad Autónoma de Madrid |
| Repository: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Language: | English |
| OAI Identifier: | oai:repositorio.uam.es:10486/662036 |
| Online Access: | http://hdl.handle.net/10486/662036 https://dx.doi.org/10.1051/0004-6361/201118448 |
| Access Level: | Open access |
| Keyword: | Astrobiology Astrochemistry Line: identification Molecular data Protoplanetary disks Stars: formation Física |
| _version_ | 1878739542881599488 |
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| author | Rivière-Marichalar, Pablo |
| author2 | Ménard, François C. Thi, Wingfai Kamp, Inga Montesinos, Benjamín Meeus, Gwendolyn Woitke, Peter Howard, Christian D. Sandell, Göran H L Dent, William R F Mendigutía, I. Pinte, Christophe White, Glenn J. Podio, L. Barrado, David |
| author2_role | author author author author author author author author author author author author author author |
| author_browse | Barrado, David Dent, William R F Howard, Christian D. Kamp, Inga Meeus, Gwendolyn Mendigutía, I. Montesinos, Benjamín Ménard, François C. Pinte, Christophe Podio, L. Rivière-Marichalar, Pablo Sandell, Göran H L Thi, Wingfai White, Glenn J. Woitke, Peter |
| author_facet | Rivière-Marichalar, Pablo Ménard, François C. Thi, Wingfai Kamp, Inga Montesinos, Benjamín Meeus, Gwendolyn Woitke, Peter Howard, Christian D. Sandell, Göran H L Dent, William R F Mendigutía, I. Pinte, Christophe White, Glenn J. Podio, L. Barrado, David |
| author_role | author |
| collection | Biblos-e Archivo. Repositorio Institucional de la UAM |
| description | Astronomy and Astrophysics 538 (2012): L3 reproduced with permission from Astronomy & Astrophysics |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_c37d7a2e5122f8bbd28995e0c4f1c4ce |
| institution | Universidad Autónoma de Madrid |
| instname_str | Universidad Autónoma de Madrid |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:repositorio.uam.es:10486/662036 |
| publishDate | 2012 |
| publishDateSort | 2012 |
| publisher | ESO |
| publisherStr | ESO |
| reponame_str | Biblos-e Archivo. Repositorio Institucional de la UAM |
| spelling | Detection of warm water vapour in Taurus protoplanetary discs by Herschel Rivière-Marichalar, Pablo Ménard, François C. Thi, Wingfai Kamp, Inga Montesinos, Benjamín Meeus, Gwendolyn Woitke, Peter Howard, Christian D. Sandell, Göran H L Dent, William R F Mendigutía, I. Pinte, Christophe White, Glenn J. Podio, L. Barrado, David Astrobiology Astrochemistry Line: identification Molecular data Protoplanetary disks Stars: formation Física Astronomy and Astrophysics 538 (2012): L3 reproduced with permission from Astronomy & Astrophysics Line spectra of 68 Taurus T Tauri stars were obtained with the Herschel-PACS (Photodetector Array Camera and Spectrometer) instrument as part of the GASPS (GAS evolution in Protoplanetary Systems) survey of protoplanetary discs. A careful examination of the linescans centred on the [OI] 63.18 μm fine-structure line unveiled a line at 63.32 μm in some of these spectra.We identify this line with the 818 → 707 transition of ortho-water. It is detected confidently (i.e., >3σ) in eight sources, i.e., ∼24% of the sub-sample with gas-rich discs. Several statistical tests were used to search for correlations with other disc and stellar parameters such as line fluxes of [Oi] 6300 Å and 63.18 μm; X-ray luminosity and continuum levels at 63 μm and 850 μm. Correlations are found between the water line fluxes and the [O i] 63.18 μm line luminosity, the dust continuum, and possibly with the stellar X-ray luminosity. This is the first time that this line of warm water vapour has been detected in protoplanetary discs. We discuss its origins, in particular whether it comes from the inner disc and/or disc surface or from shocks in outflows and jets. Our analysis favours a disc origin, with the observed water vapour line produced within 2–3 AU from the central stars, where the gas temperature is of the order of 500–600 K. This research has been funded by Spanish grants AYA 2010-21161-C02-02, CDS2006-00070 and PRICIT-S2009/ESP-1496. In France we thank ANR (contracts ANR-07-BLAN-0221 and ANR-2010-JCJC-0504-01); CNES; PNPS of CNRS/INSU. The Millennium Science Initiative (ICM) of the Chilean ministry of Economy (Nucleus P10-022-F) and an EC-FP7 grant (PERG06-GA-2009-256513) are also acknowledged. ESO http://hdl.handle.net/10486/662036 https://dx.doi.org/10.1051/0004-6361/201118448 |
| spellingShingle | Detection of warm water vapour in Taurus protoplanetary discs by Herschel Rivière-Marichalar, Pablo Astrobiology Astrochemistry Line: identification Molecular data Protoplanetary disks Stars: formation Física |
| title | Detection of warm water vapour in Taurus protoplanetary discs by Herschel |
| title_full | Detection of warm water vapour in Taurus protoplanetary discs by Herschel |
| title_fullStr | Detection of warm water vapour in Taurus protoplanetary discs by Herschel |
| title_full_unstemmed | Detection of warm water vapour in Taurus protoplanetary discs by Herschel |
| title_short | Detection of warm water vapour in Taurus protoplanetary discs by Herschel |
| title_sort | Detection of warm water vapour in Taurus protoplanetary discs by Herschel |
| topic | Astrobiology Astrochemistry Line: identification Molecular data Protoplanetary disks Stars: formation Física |
| topic_facet | Astrobiology Astrochemistry Line: identification Molecular data Protoplanetary disks Stars: formation Física |
| url | http://hdl.handle.net/10486/662036 https://dx.doi.org/10.1051/0004-6361/201118448 |