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        GAS in Protoplanetary Systems (GASPS) I. First results

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        904549.pdf (PDF, 195Kb)
        Author
        Mathews, G. S.
        Dent, W. R. F.
        Williams, J. P.
        Howard, C. D.
        Meeus, G.
        Riaz, B.
        Roberge, A.
        Sandell, G.
        Vandenbussche, B.
        Duchene, G.
        Kamp, I.
        Menard, 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.
        Mendigutia, 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.
        Attention
        2299/7275
        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 gimel similar to 60-190 mu m using the Photodetector Array Camera and Spectrometer instrument on the Herschel Space Observatory. Results. We detect [OI] 63 mu m 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 mu m. Extensive models are presented in associated papers.
        Publication date
        2010
        Published in
        Astronomy and Astrophysics
        Published version
        https://doi.org/10.1051/0004-6361/201014595
        Other links
        http://hdl.handle.net/2299/7275
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