2007/08/21 by P. S. Teixeira, Paula S. Teixeira, Luis A. Zapata +2
Chemistry · Physics and Astronomy · #Angular resolution (graph drawing) #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Cluster (spacecraft) #Fragmentation (computing) #Geology #High resolution #Infrared #Molecular Spectroscopy and Structure #Molecular cloud #Physics #Protostar #Remote sensing #Star formation #Stars #Stellar, planetary, and galactic studies #Submillimeter Array #astro-ph
paper · pdf · doi:10.1086/522494
Accepted for publication in the Astrophysical Journal Letters
arxiv created 2007/08/21 · openalex publication_date 2007/09/17 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
We present sensitive and high angular resolution (~1'') 1.3 mm continuum observations of the dusty core D-MM1 in the Spokes cluster in NGC 2264 using the Submillimeter Array. A dense microcluster of seven Class 0 sources was detected in a 20'' × 20'' region with masses between 0.4 and 1.2 M ☉ and deconvolved sizes of ~600 AU. We interpret the 1.3 mm emission as arising from the envelopes of the Class 0 protostellar sources. The mean separation of the 11 known sources (SMA Class 0 and previously known infrared sources) within D-MM1 is considerably smaller than the characteristic spacing between sources in the larger Spokes cluster and is consistent with hierarchical thermal fragmentation of the dense molecular gas in this region.