The formation and evolution of planetary systems: First results from a spitzer legacy science program

A. Moro-Martín, 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, P. Morris, J. NajitaD. 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

Research output: Contribution to journalConference articlepeer-review


We present 3-160 μm photometry obtained with IRAC and MIPS, spectrophotometry from 5-35 μm using IRS low resolution, and IRS high resolution spectrum of HD 105 (GO V, 30 ± 10 Myr, 40±1 pc) and HD 150706 (G3 V, 700±300 Myr, 27±0.4 pc). 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. We place preliminary upper limits on the remnant molecular gas. The disk surrounding HD 150706 also exhibits evidence of a large inner hole. Of the four survey targets (0.03-3 Gyr) without previously detected IR excess, 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.

Original languageEnglish (US)
Pages (from-to)469-470
Number of pages2
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number577
StatePublished - 2005
EventThe Dusty and Molecular Universe - A Prelude to Herschel and ALMA - Paris, France
Duration: Oct 27 2004Oct 29 2004


  • Circumstellar matter
  • Infrared: stars
  • Planetary systems: protoplanetary disks

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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