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GASPS Photometry of the Tucana-Horologium AssociationThe GASPS Open Time Key Programme on Herschel represents a new opportunity to sensitively probe protoplanetary and debris disks at far-IR wavelengths. We present preliminary PACS 70 and 160 micron photometry of eighteen stars in the 30 Myr-old Tucana-Horologium association. Of these eighteen, eight were detected in the 70 micron band. Four of these eight were also detected in the 160 micron band. We constructed SEDs for these systems using optical data from Hipparcos (B and V), near-IR data from 2MASS (J, H, and K), mid-IR data from IRAS and Spitzer MIPS (12 and 24 microns, respectively), and the new far-IR data from PACS. For the stars showing IR excess emission, we fit simple single-temperature blackbody curves to the IR excess in order to determine the rough dust abundances and temperatures. Dust observations at these wavelengths will also be important for comparison with upcoming Herschel PACS spectra that will search for gas in the disks. Our goal is to determine or limit the ever-allusive gas-to-dust ratio for these disk systems.
Document ID
20100031070
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Roberge, Donaldson J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Roberge, Aki
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
September 6, 2010
Subject Category
Astrophysics
Meeting Information
Meeting: Herschel and the Formation of Stars and Planetary Systems
Location: Gothenburg
Country: Sweden
Start Date: September 6, 2010
End Date: September 9, 2010
Distribution Limits
Public
Copyright
Other

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