A dataset provided by the European Space Agency

Name SDP_bdent_3
Title Gas in Protoplanetary Systems. (GASPS)


DOI https://doi.org/10.5270/esa-sssgeot
Author European Space Agency
Description We propose the first extensive, systematic survey of gas in
circumstellar disks over the critical transition from gas-rich
protoplanetary through to gas-poor debris system. The brightest
spectral lines from disks lie in the far-infrared and arise from
radii virgul10-500 AU, where giant planets are expected to form.
Herschel is uniquely able to observe this wavelength regime with
the sensitivity to allow a large scale survey.

We will carry out a 2-phase PACS study, surveying the fine
structure lines of [CII]157um and [OI]63um in 274 objects,
and following up the brightest sources with observations of
H2O and [OI]145um. The gas mass sensitivity, a few 1e-5 Msun,
will be more than an order of magnitude lower than achieved by
ISO and Spitzer and expected for SOFIA. We will also measure
the dust continuum to an equivalent mass sensitivity. Team
members include experts in the modeling of disk structure,
chemistry, and radiative transfer necessary to interpret these

We will observe nearby clusters in the age range 1-30Myr,
encompassing disk masses 1e-2 - 1e-5 Msun, and stellar
luminosity 1-100 Lsun. This covers the dominant epoch of
planet formation and the mass from protoplanetary through
to young debris disk. Furthermore our sample is chosen to
include a wide range of X-ray & UV flux, and SED shape, from
classical SED Class II, through transition disks with inner dust
holes, to disks with small IR excesses. With this extensive
dataset, our program will:

- Trace gas and dust in the planet formation region across an
extensive multivariate parameter space

- Provide the first definitive measurement of the gas dissipation
timescale in disks

- Study the evolutionary link between protoplanetary and debris

- Investigate the extent and evolution of warm H2O in the
planet-forming re...gions of disks, with implications for the
volatile content of developing planets

- Provide an extensive database of disk observations and
models with long-lasting legacy value for followup observations
Publication GASPS—A Herschel Survey of Gas and Dust in Protoplanetary Disks: Summary and Initial Statistics . Dent W. R. F. et al. . Publications of the Astronomical Society of the Pacific, Volume 125, Issue 927, pp. 477-505 (2013). . 125 . 10.1086\/670826 . 2013PASP..125..477D ,
GAS in Protoplanetary Systems (GASPS). I. First results . Mathews G. S. et al. . Astronomy and Astrophysics, Volume 518, id.L127, 5 pp. . 518 . 10.1051\/0004-6361\/201014595 . 2010A&A...518L.127M ,
Herschel-PACS observations of far-IR lines in young stellar objects. I. [OI] and H2O at 63 μm . Riviere-Marichalar P. et al. . Astronomy & Astrophysics, Volume 594, id.A59, 25 pp. . 594 . 10.1051\/0004-6361\/201527829 . 2016A&A...594A..59R ,
The Herschel view of GAS in Protoplanetary Systems (GASPS). First comparisons with a large grid of models . Pinte C. et al. . Astronomy and Astrophysics, Volume 518, id.L126, 5 pp. . 518 . 10.1051\/0004-6361\/201014591 . 2010A&A...518L.126P ,
Gas in the protoplanetary disc of HD 169142: Herschel.s view . Meeus G. et al. . Astronomy and Astrophysics, Volume 518, id.L124, 5 pp. . 518 . 10.1051\/0004-6361\/201014557 . 2010A&A...518L.124M ,
The far-infrared behaviour of Herbig Ae/Be discs: Herschel PACS photometry . Pascual N. et al. . Astronomy & Astrophysics, Volume 586, id.A6, 17 pp. . 586 . 10.1051\/0004-6361\/201526605 . 2016A&A...586A...6P ,
Instrument PACS_PacsRangeSpec_point, PACS_PacsPhoto_largeScan, PACS_PacsLineSpec_point
Temporal Coverage 2009-10-26T07:20:35Z/2010-02-11T10:29:57Z
Version SPG v14.2.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/h®erschel/
Date Published 2010-03-23T10:02:17Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2010, Gas In Protoplanetary Systems. Openpargaspsclosepar, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-sssgeot