Physics
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.577..469m&link_type=abstract
In: Proceedings of the dusty and molecular universe: a prelude to Herschel and ALMA, 27-29 October 2004, Paris, France. Ed. by A
Physics
Circumstellar Matter, Infrared: Stars, Planetary Systems: Protoplanetary Disks
Scientific paper
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 (G0 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.
Backman Dana E.
Beckwith Steve V. W.
Bouwman Jeroen
Brooke Timothy Young
Carpenter John Michael
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