IRAC Mapping of IC 2391

Details IRAC Mapping of IC 2391 IRAC Mapping of IC 2391

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30802r&link_type=abstract

Spitzer Proposal ID #30802

Computer Science

Scientific paper

We propose to map the central square degree of the cluster IC 2391 using IRAC. As one of the nearest (145 pc) young (50 Myr) clusters, IC 2391 is a key target for understanding the evolution of debris disks as well as studying the cluster IMF. The proposed IRAC map complements the MIPS map we obtained under the initial GTO program. These IRAC data are important in our analysis of the MIPS data by accurately allowing us to fix the photospheric levels for the later type stars. The IRAC maps will be sufficiently sensitive to detect the photospheres to well below the hydrogen burning limit. By using the IRAC data in conjunction with a large amount of existing ancillary data (2MASS, ground-based visual maps, spectroscopy) we will be able to clearly identify members of the cluster and produce a clean measurement of the IMF in a 50 Myr cluster.

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