The Formation and Evolution of Planetary Systems: First Results from a Spitzer Legacy Science Program

M.R. Meyer, L.A. Hillenbrand, D.E. Backman, S.V.W. Beckwith, J. Bouwman, T.Y. Brooke, J.M. Carpenter, M. Cohen, U. Gorti, T. Henning, D.C. Hines, D. Hollenbach, J.S. Kim, J. Lunine, R. Malhotra, E.E. Mamajek, S. Metchev, A. Moro--Martin, P. Morris, J. Najita, D.L. Padgett, J. Rodmann, M.D. Silverstone, D.R. Soderblom, J.R. Stauffer, E.B. Stobie, S.E. Strom, D.M. Watson, S.J. Weidenschilling, S. Wolf, E. Young, C.W. Engelbracht, K.D. Gordon, K. Misselt, J. Morrison, J. Muzerolle, K. Su 2004, ApJS, 154, 422

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, approx. 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.

[XXX/astro-ph Preprint] [ADS Entry]

ADS Citation Query
# citations = 66
average # citations/year = 9.43 (# years = 7)
# citations vs. year [year=citations]
[2010=2] [2009=8] [2008=12] [2007=12] [2006=18] [2005=10] [2004=4]
[determined from ADS on 10 Sep 2010]