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Published September 2004 | Published
Journal Article Open

A "Starless" Core that Isn't: Detection of a Source in the L1014 Dense Core with the Spitzer Space Telescope


We present observations of L1014, a dense core in the Cygnus region previously thought to be starless, but data from the Spitzer Space Telescope show the presence of an embedded source. We propose a model for this source that includes a cold core, heated by the interstellar radiation field, and a low-luminosity internal source. The low luminosity of the internal source suggests a substellar object. If L1014 is representative, other "starless" cores may turn out to harbor central sources.

Additional Information

© 2004 The American Astronomical Society. Received 2004 March 26, accepted for publication 2004 April 24. Support for this work, part of the Spitzer Legacy Science Program, was provided by NASA through contracts 1224608 and 1230780 issued by the Jet Propulsion Laboratory, California Institute of Technology, under NASA contract 1407. The Leiden c2d legacy team is supported by a Spinoza grant from the Netherlands Foundation for Scientific Research and by a grant from the Netherlands Research School for Astronomy. Observations at the SRAO were supported by the KOSEF R01-2003-000-10513-0 program. The SCUBA data were provided to us as a guest user at the Canadian Astronomy Data Centre, which is operated by the Dominion Astrophysical Observatory for the National Research Council of Canada's Herzberg Institute of Astrophysics. This publication makes use of data products from 2MASS, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, California Institute of Technology, funded by NASA and the NSF. Finally, we thank our anonymous referee for insightful and useful comments.

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