MIPS Observations of the 100 Myr old Blanco 1 Cluster: An Attempt to Determine the Frequency of Vega-Type Disks for a Coeval Population of Stars of Vega's Age

Details MIPS Observations of the 100 Myr old Blanco 1 Cluster: An Attempt to Determine the Frequency of Vega-Type Disks for a Coeval Population of Stars of Vega's Age MIPS Observations of the 100 Myr old Blanco 1 Cluster: An Attempt to Determine the Frequency of Vega-Type Disks for a Coeval Population of Stars of Vega's Age

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30022s&link_type=abstract

Spitzer Proposal ID #30022

Physics

Scientific paper

We propose to obtain MIPS photometry observations of 25 well-established members of the Blanco1 open cluster having spectral types from A0 through G0. Blanco1 is the only reasonably young (age < 150 Myr), reasonably nearby (distance < 250 pc) open cluster that is located both far from the ecliptic plane (beta = -28 degrees) and far from the galactic plane (b = -79 degrees!). It thus offers the best possibility to obtain MIPS photometry capable of detected debris disks at both 24 and 70 microns for a coeval population well beyond the PMS era. Previous Spitzer programs searching for debris disks in open clusters have only obtained good data at 24 microns; if approved, the Blanco 1 observations would be the first dataset capable of placing useful constraints on the incidence of Vega type disks (debris disks only showing excesses longwards of 24 microns) for a cluster whose age is similar to that of Vega and is of order the beginning portion of the era of maximum bombardment in our solar system.

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