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Herschel Observations of the HR 8799 Disk

Published online by Cambridge University Press:  06 January 2014

Brenda C. Matthews ,
Grant Kennedy ,
Bruce Sibthorpe ,
Mark Booth ,
Hannah Broekhoven-Fiene ,
Mark Wyatt ,
Bruce Macintosh  and
Christian Marois
Brenda C. Matthews
Affiliation:
National Research Council of Canada, Herzberg Astronomy & Astrophysics Program, 5071 West Saanich Road, Victoria, BC, V9E E7, Canada, email: brenda.matthews@nrc-cnrc.gc.ca Dept. of Physics & Astronomy, University of Victoria, Elliott Building, 3800 Finnerty Rd, Victoria, BC, V8P 5C2Canada
Grant Kennedy
Affiliation:
Institute of Astronomy, Madingley Rd, Cambridge CB3 0HA, UK
Bruce Sibthorpe
Affiliation:
SRON Netherlands Institute for Space Research, Groningen, The Netherlands
Mark Booth
Affiliation:
National Research Council of Canada, Herzberg Astronomy & Astrophysics Program, 5071 West Saanich Road, Victoria, BC, V9E E7, Canada, email: brenda.matthews@nrc-cnrc.gc.ca Dept. of Physics & Astronomy, University of Victoria, Elliott Building, 3800 Finnerty Rd, Victoria, BC, V8P 5C2Canada
Hannah Broekhoven-Fiene
Affiliation:
National Research Council of Canada, Herzberg Astronomy & Astrophysics Program, 5071 West Saanich Road, Victoria, BC, V9E E7, Canada, email: brenda.matthews@nrc-cnrc.gc.ca Dept. of Physics & Astronomy, University of Victoria, Elliott Building, 3800 Finnerty Rd, Victoria, BC, V8P 5C2Canada
Mark Wyatt
Affiliation:
Institute of Astronomy, Madingley Rd, Cambridge CB3 0HA, UK
Bruce Macintosh
Affiliation:
Lawrence Livermore National Labs
Christian Marois
Affiliation:
National Research Council of Canada, Herzberg Astronomy & Astrophysics Program, 5071 West Saanich Road, Victoria, BC, V9E E7, Canada, email: brenda.matthews@nrc-cnrc.gc.ca
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Abstract

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The HR 8799 four-planet host is known to host a multi-component disk from Spitzer observations. We have obtained Herschel† observations of the disk which provide increased sensitivity and resolution of its outer components: the planetesimal belt and halo. We find that the two components cannot be discerned from the spectral energy distribution alone, but require resolved images to independently identify them. In the resolved images, the halo stands out for its steep radial profile and large radial extent to 2000 AU, a factor of two larger than was estimated from Spitzer data.

Keywords

stars: individual (HR 8799)stars: circumstellar matterplanetary systems
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S299: Exploring the Formation and Evolution of Planetary Systems , June 2013 , pp. 348 - 349
Copyright
Copyright © International Astronomical Union 2013 

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