Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20910519r&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #105.19; Bulletin of the American Astronomical Society,
Other
Scientific paper
We present observations of 10.6 square degrees of the Perseus molecular cloud at 24, 70, and 160 um with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). Of 3950 point sources identified at 24 um, 1141 have 2MASS counterparts. A third of these 1141 sources populate regions of the Ks vs. Ks-[24] diagram that are distinct from background SWIRE galaxies, and thus are likely to be cloud members with infrared excess. Nearly half (46%) of these 24 um excess sources are distributed outside the IC 348 and NGC 1333 clusters. The intercluster region contains several tightly clumped ( 0.1 pc) young stellar aggregates which exhibit a wide variety of infrared spectral energy distributions (SEDs) characteristic of different circumstellar environments. One possible explanation is a significant age spread among the aggregate members. Alternatively, if the members are "coeval," then remarkably rapid circumstellar evolution would be required to produce Class I and Class III sources within close proximity to one another.
C2D Team
Rebull Luisa M.
Stapelfeldt Karl
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