INFRARED SPECTRAL ENERGY-DISTRIBUTIONS OF YOUNG STELLAR OBJECTS IN BOK GLOBULES

We present near-infrared photometry from a J, H, and K-band imaging survey towards IRAS sources in Bok globules. Analysis of the photometry provided near-infrared magnitudes, fluxes, and colors of these YSOs. Using the near-infrared colors together with the coordinates of the objects, the most likely near-infrared counterparts to the IRAS far-infrared point sources are identified. Broadband spectral energy distributions (SEDs) for the YSOs were established and the sources were classified according to the shapes of their SEDs. Of the 22 bona fide YSOs found, 10 are Class I. Half of the remaining 12 sources are classified as Class II and the other half as Class II-D. We find that the Class I sources seem to be particularly well identified by the 12/25 μm spectral index. For Class I and Class II sources, the 12/25 μm spectral index and the 2/25 μm spectral index both give the same information about the embeddedness and type of YSO.