Monitoring the Variability of the HD69830 Zodiacal Cloud
Abstract
Examination of our Spitzer/IRS data from 3 epochs (two in 2007 and the discovery observations in 2004) show significant changes in the small grain content of the debris disk surrounding the star HD69830. The dynamical time scale for this disk is of order of 1 yr and the existence of 3 planets within 1 AU, where the debris cloud is located, makes the continuous disruption of large solid bodies likely. HD69830 is the premier laboratory for disk-planet interactions. We request 1.5 hours of IRS/LoRes time to extend the time baseline to allow us to monitor this variability.
- Publication:
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Spitzer Proposal
- Pub Date:
- November 2008
- Bibcode:
- 2008sptz.prop..528B