The Perseus Molecular Cloud: Towards a COMPLETEr Understanding

Details The Perseus Molecular Cloud: Towards a COMPLETEr Understanding The Perseus Molecular Cloud: Towards a COMPLETEr Understanding

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jrasc..99q.138k&link_type=abstract

Journal of the Royal Astronomical Society of Canada, Vol. 99, No. 4, p.138

Astronomy and Astrophysics

Astronomy

Scientific paper

We present results of an analysis of the Perseus molecular cloud using a combination of 850um continuum data to trace small-scale structure and near-IR extinction data to trace the large-scale structure of the cloud. We analyze the structure in both maps, including fitting "clumps" found in the sub-millimetre to Bonnor-Ebert spheres. The cumulative mass distribution of the sub-millimetre clumps is shown to be dominated by low-mass clumps, with a slope similar to that of the stellar Initial Mass Function. We also demonstrate that the submillimetre clumping is only found toward the higher column density regions. This is similar to the extinction-threshold recently discovered for star-forming regions in the Ophiuchus molecular cloud. We conclude by presenting 2-micron molecular-hydrogen images of the Perseus B1 region indicating that some of the sub-millimetre clumps, which are often assumed to be prestellar, are powering jets and thus contain deeply embedded young protostars.

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