| Name | OT1_bmatthew_4 |
| Title | Testing Planetary Dynamics and Evolutionary History in the HR 8799 Planet/Disc System |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342223848&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-7q2rjb6 |
| Author | European Space Agency |
| Description | We propose to map the debris disc associated with the multi-planet system HR 8799 in order to constrain the current dynamical state of the planetary system and refine models for dust production in the disc, thereby testing models for the origins of the three known giant planets. Herschel.s sensitivity and resolution make it possible to image both the cold planetesimal disc (posited to lie between radii of 90-300 AU) as well as the fainter extended halo (300 - 1000 AU radius) at multiple wavelengths. Direct detection of the edges of the cold belt of dust and an independent measure of the system.s inclination will provide critical constraints on models of the planetary orbits within the system, particularly for the outer-most planet for which mass and orbit information can be constrained by simultaneous fits to the planet and disc. The combination of three massive, coeval, and spectroscopically characterizable planets, together with the dust disc, makes this system a Rosetta Stone for planet formation studies. The disc is also important for differentiating between planet formation scenarios. Models predict variations in resonance structure for migration versus in situ formation, and multi-wavelength variations in observed structure within Herschel.s wavelength range in the case of planetary migration. This proposal is at the very heart of Herschel.s top science goal of understanding the mechanisms involved in the formation of stars and planetary bodies. The resolution, sensitivity and multi-wavelength imaging of Herschel are crucial to this program. |
| Publication | The scattered disc of HR 8799 . Geiler Fabian et al. . Monthly Notices of the Royal Astronomical Society, Volume 483, Issue 1, p.332-341 . 483 . 10.1093\/mnras\/sty3160 . 2019MNRAS.483..332G , VLT/SPHERE Multiwavelength High-contrast Imaging of the HD 115600 Debris Disk: New Constraints on the Dust Geometry and the Presence of Young Giant Planets . Gibbs Aidan et al. . The Astronomical Journal, Volume 157, Issue 1, article id. 39, 11 pp. (2019). . 157 . 10.3847\/1538-3881\/aaf1bd . 2019AJ....157...39G , Debris Disk Results from the Gemini Planet Imager Exoplanet Survey.s Polarimetric Imaging Campaign . Esposito Thomas M. et al. . The Astronomical Journal . null . null . 2020AJ....160...24E , The dust grain size-stellar luminosity trend in debris discs . Pawellek Nicole et al. . Monthly Notices of the Royal Astronomical Society, Volume 454, Issue 3, p.3207-3221 . 454 . 10.1093\/mnras\/stv2142 . 2015MNRAS.454.3207P , Alignment in star-debris disc systems seen by Herschel . Greaves J. S. et al. . Monthly Notices of the Royal Astronomical Society: Letters, Volume 438, Issue 1, p.L31-L35 . 438 . 10.1093\/mnrasl\/slt153 . 2014MNRAS.438L..31G , Resolved Imaging of the HR 8799 Debris Disk with Herschel . Matthews Brenda et al. . The Astrophysical Journal, Volume 780, Issue 1, article id. 97, 12 pp. (2014). . 780 . 10.1088\/0004-637X\/780\/1\/97 . 2014ApJ...780...97M , A search for trends in spatially resolved debris discs at far-infrared wavelengths . Marshall J. P. et al. . Monthly Notices of the Royal Astronomical Society . null . ... |
| Instrument | PACS_PacsPhoto_largeScan, SPIRE_SpirePhoto_small |
| Temporal Coverage | 2011-07-09T22:10:08Z/2011-12-18T11:16:20Z |
| 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 | 2012-06-18T11:13:31Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2012, Testing Planetary Dynamics And Evolutionary History In The Hr 8799 Planet/Disc System, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-7q2rjb6 |