Dust in the Inner Regions of Debris Disk Systems

Details Dust in the Inner Regions of Debris Disk Systems Dust in the Inner Regions of Debris Disk Systems

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5709a&link_type=abstract

American Astronomical Society, AAS Meeting #211, #57.09; Bulletin of the American Astronomical Society, Vol. 39, p.831

Astronomy and Astrophysics

Astronomy

Scientific paper

We present near-infrared interferometry observations from CHARA of the debris disk systems around two main sequence A stars, beta Leo and zeta Lep. Both of these stars exhibit a substantial mid-infrared excess from material with a characteristic temperature in the range of 100-200 K. We detect a small amount of near-infrared flux in excess of the stellar photosphere for both stars, although the zeta Lep detection is tentative. Models for the excess are given, including scattering and thermal emission, and the results discussed in the context of the previously known mid-infrared excess, which is presumed to arise from a planetesimal belt. This work was conducted at the Michelson Science Center, Caltech.

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