MIPS 24 micron observations of h & chi Persei: debris disk evolution at 13 Myr

Details MIPS 24 micron observations of h & chi Persei: debris disk evolution at 13 Myr MIPS 24 micron observations of h & chi Persei: debris disk evolution at 13 Myr

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40690k&link_type=abstract

Spitzer Proposal ID #40690

Physics

Scientific paper

We propose to obtain 24 micron images of the 13 Myr-old Double Cluster h & chi Persei. The proposed observations will yield two 13' x 13' maps that include the half-density radius of each cluster. Our target sensitivity, 60 microJy ([24] = 12.7 at 5 sigma), will enable detections of (i) photospheric emission for more than 500 cluster members with B5 or earlier spectral types and (ii) robust detection of IR excess emission from several hundred debris disk candidates with spectral types earlier than K2-K4. In addition to providing improved constraints on the wavelength dependent evolution timescales of evolved circumstellar disks, these data will probe the terrestrial regions of solar-type stars at a time when we expect Earth-like planets to accumulate most of their mass and to produce copious amounts of debris . If terrestrial planet formation is relatively common in the Double Cluster, these data will yield unambiguous detections of the debris disk remnants of this process.

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