A dense microcluster of class 0 protostars in NGC 2264 D-MM1

Paula S. Teixeira, Luis A. Zapata, Charles J. Lada

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20 Citations (Scopus)


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 Msolar 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.
Original languageEnglish
Article numberL179
JournalAstrophysical Journal
Issue number2
Early online date17 Sept 2007
Publication statusPublished - 1 Oct 2007


  • Stars: circumstellar Matter
  • Stars: planetary systems: protoplanetary disks
  • Stars: formation
  • Techniques: interferometric


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