GAS in Protoplanetary Systems (GASPS) I. First results

G. S. Mathews, W. R. F. Dent, J. P. Williams, C. D. Howard, G. Meeus, B. Riaz, A. Roberge, G. Sandell, B. Vandenbussche, G. Duchene, I. Kamp, F. Menard, B. Montesinos, C. Pinte, W. F. Thi, P. Woitke, J. M. Alacid, S. M. Andrews, D. R. Ardila, G. AresuJ. C. Augereau, D. Barrado, S. Brittain, D. R. Ciardi, W. Danchi, C. Eiroa, D. Fedele, C. A. Grady, I. de Gregorio-Monsalvo, A. Heras, N. Huelamo, A. Krivov, J. Lebreton, R. Liseau, C. Martin-Zaidi, I. Mendigutia, A. Mora, M. Morales-Calderon, H. Nomura, E. Pantin, I. Pascucci, N. Phillips, L. Podio, D. R. Poelman, S. Ramsay, K. Rice, P. Riviere-Marichalar, E. Solano, I. Tilling, H. Walker, G. J. White, G. Wright

    Research output: Contribution to journalArticlepeer-review

    26 Citations (Scopus)
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    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.

    Original languageEnglish
    Article numberL127
    Pages (from-to)-
    Number of pages5
    JournalAstronomy and Astrophysics
    Volume518
    DOIs
    Publication statusPublished - 2010

    Keywords

    • stars: pre-main sequence
    • protoplanetary disks
    • infrared: stars
    • ETA-CHAMAELEONTIS CLUSTER
    • FINE-STRUCTURE LINES
    • HERBIG-AE
    • TW-HYDRAE
    • YOUNG STARS
    • MASS-LOSS
    • ISO-LWS
    • MU-M
    • DISK
    • EMISSION

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