The Formation and Evolution of Planetary Systems: First Results from a Spitzer Legacy Science Program
Abstract
We present 3-160 micron photometry obtained with the IRAC and MIPS instruments for the first five targets from the Spitzer Legacy Science Program "Formation and Evolution of Planetary Systems" and 4-35 micron spectro-photometry obtained with the IRS for two sources. We discuss in detail our observations of the debris disks surrounding HD 105 (G0V, 30 +- 10 Myr) and HD 150706 (G3V, ~ 700 +- 300 Myr). For HD 105, possible interpretations include large bodies clearing the dust inside of 45 AU or a reservoir of gas capable of sculpting the dust distribution. The disk surrounding HD 150706 also exhibits evidence of a large inner hole in its dust distribution. Of the four survey targets without previously detected IR excess, spanning ages 30 Myr to 3 Gyr, the new detection of excess in just one system of intermediate age suggests a variety of initial conditions or divergent evolutionary paths for debris disk systems orbiting solar-type stars.
Cite
@article{arxiv.astro-ph/0406301,
title = {The Formation and Evolution of Planetary Systems: First Results from a Spitzer Legacy Science Program},
author = {M. R. Meyer and L. A. Hillenbrand and D. E. Backman and S. V. W. Beckwith and J. Bouwman and T. Y. Brooke and J. M. Carpenter and M. Cohen and U. Gorti and T. Henning and D. C. Hines and D. Hollenbach and J. S. Kim and J. Lunine and R. Malhotra and E. E. Mamajek and S. Metchev and A. Moro--Martin and P. Morris and J. Najita and D. L. Padgett and J. Rodmann and M. D. Silverstone and D. R. Soderblom and J. R. Stauffer and E. B. Stobie and S. E. Strom and D. M. Watson and S. J. Weidenschilling and S. Wolf and E. Young and C. W. Engelbracht and K. D. Gordon and K. Misselt and J. Morrison and J. Muzerolle and K. Su},
journal= {arXiv preprint arXiv:astro-ph/0406301},
year = {2009}
}
Comments
Six postscript pages with one additional PDF file. To appear in the ApJ Supplement, Vol. 154, Spitzer Special Issue, September, 2004