GAS in Protoplanetary Systems (GASPS): I. First results
Abstract
Context. Circumstellar discs are ubiquitous around young stars, but rapidly dissipate their gas and dust on timescales of a few Myr. The Herschel Space Observatory allows for the study of the warm disc atmosphere, using far-infrared spectroscopy to measure gas content and excitation conditions, and far-IR photometry to constrain the dust distribution. Aims. We aim to detect and characterize the gas content of circumstellar discs in four targets as part of the Herschel science demonstration phase. Methods. We carried out sensitive medium resolution spectroscopy and high sensitivity photometry at λ ~ 60–190 μm using the Photodetector Array Camera and Spectrometer instrument on the Herschel Space Observatory. Results. We detect [OI] 63 μm emission from the young stars HD 169142, TW Hydrae, and RECX 15, but not HD 181327. No other lines, including [CII] 158 and [OI] 145, are significantly detected. All four stars are detected in photometry at 70 and 160 μm. Extensive models are presented in associated papers.
Additional Information
© 2010 ESO. Received 31 March 2010; accepted 9 May 2010. Published online 16 July 2010. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. We thank the PACS instrument team for their dedicated support. G.S.M., D.R.A., S.D.B., W.D., C.A.G., C.D.H., I.P., B.R., A.R., G.S. and J.P.W. acknowledge NASA/JPL for funding support. C.E., G.M., I.M., and B.M. are partly supported by Spanish grant AYA 2008-01727, and J.M.A. and E.S. by Spanish grant AYA2008-02156. C.P. acknowledges the funding from the EC 7th Framework Program as a Marie Curie Intra-European Fellow (PIEF-GA-2008-220891). E.S. and J.M.A. acknowledge funding from the Spanish MICINN through grant AYA2008-02156. The members of LAOG acknowledge PNPS, CNES and ANR (contract ANR-07-BLAN-0221) for financial support. This work is based on observations made with Herschel, a European Space Agency Cornerstone Mission with significant participation by NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. PACS has been developed by a consortium of institutes led by MPE (Germany) and including UVIE (Austria); KU Leuven, CSL, IMEC (Belgium); CEA, LAM (France); MPIA (Germany); INAF- IFSI/OAA/OAP/OAT, LENS, SISSA (Italy); IAC (Spain). This development has been supported by the funding agencies BMVIT (Austria), ESA-PRODEX (Belgium), CEA/CNES (France), DLR (Germany), ASI/INAF (Italy), and CICYT/MCYT (Spain). HIPE is a joint development by the Herschel Science Ground Segment Consortium, consisting of ESA, the NASA Herschel Science Center, and the HIFI, PACS and SPIRE consortia.Attached Files
Published - Mathews2010p11923Astron_Astrophys.pdf
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Additional details
- Eprint ID
- 20816
- Resolver ID
- CaltechAUTHORS:20101115-152509343
- NASA
- AYA 2008-01727
- Ministerio de Ciencia e Innovación (MICIIN)
- AYA2008-02156
- Ministerio de Ciencia e Innovación (MICIIN)
- PIEF-GA-2008-220891
- EC 7th Framework Program
- AYA2008-02156
- Ministerio de Ciencia e Innovación (MICIIN)
- Centre National d'Études Spatiales (CNES)
- ANR-07-BLAN-0221
- Agence Nationale de la Recherche (ANR)
- Created
-
2010-11-16Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)