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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 559341.0, MPI für Astronomie / Publikationen_mpia
GAS in protoplanetary systems (GASPS). I. First results
Authors:Mathews, G. S.; Dent, W. R. F.; Williams, J. P.; Howard, C. D.; Meeus, G.; Riaz, B.; Roberge, A.; Sandell, G.; Vandenbussche, B.; Duchêne, G.; Kamp, I.; Ménard, F.; Montesinos, B.; Pinte, C.; Thi, W. F.; Woitke, P.; Alacid, J. M.; Andrews, S. M.; Ardila, D. R.; Aresu, G.; Augereau, J. C.; Barrado, D.; Brittain, S.; Ciardi, D. R.; Danchi, W.; Eiroa, C.; Fedele, D.; Grady, C. A.; de Gregorio-Monsalvo, I.; Heras, A.; Huelamo, N.; Krivov, A.; Lebreton, J.; Liseau, R.; Martin-Zaidi, C.; Mendigutí­a, I.; Mora, A.; Morales-Calderon, M.; Nomura, H.; Pantin, E.; Pascucci, I.; Phillips, N.; Podio, L.; Poelman, D. R.; Ramsay, S.; Rice, K.; Riviere-Marichalar, P.; Solano, E.; Tilling, I.; Walker, H.; White, G. J.; Wright, G.
Language:English
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Astronomy and Astrophysics
Journal Abbrev.:A&A
Volume:518
Start Page:id.L127
Review Status:Peer-review
Audience:Experts Only
Abstract / Description: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. <BR /> Aims: We aim to detect and characterize the gas content of circumstellar discs in four targets as part of the Herschel science demonstration phase. <BR /> 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. <BR /> 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. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Free Keywords:stars: pre-main sequence; protoplanetary disks; infrared: stars
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2010A%26A...518L.127... [ID No:1]
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