Extended far-infrared emission from the NGC 2264 molecular cloud

Astronomy and Astrophysics – Astrophysics

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Emission Spectra, Far Infrared Radiation, Galactic Clusters, Molecular Clouds, Astronomical Maps, Brightness Distribution, Carbon Monoxide, Stellar Evolution

Scientific paper

A number of sources of far infrared radiation have been detected through large-scale mapping of the molecular cloud associated with the galactic cluster NGC 2264. The luminosity of the known infrared source, NGC 2264IR, is found to be 3.8×103 L_sun;, consistent with the value derived from higher resolution observations. Of the new sources, two can probably be attributed to the effects of nearby stars. The third, NGC 2264FIR, is coincident with a 13CO maximum and may indicate the presence of an embedded object of luminosity ≡1.8×103 L_sun;. The energy available from NGC 2264IR and NGC 2264FIR is probably sufficient to produce the observed gas kinetic temperatures through the usual dust-gas heating mechanisms.

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