A Study of Extinction and Star Formation in the Chamaeleon I Cloud with DENIS
I present the first massive star count in the J band (1.25 μm) provided by DENIS in the Chamaeleon I dark cloud. These data are used to derive a high resolution map (2’) of an area of 1.5° x 3° around the centre of the cloud using an original processing which involves an adaptive grid for counting and a wavelet decomposition for noise filtering of the extinction map. The maximum extinction in this cloud is found to be 10 Av, using a normal law. Preliminary results on the study of the star formation improve our knowledge about the stellar population of the cloud. In particular, the K s luminosity function allows the estimation of the age of the stellar population of the cloud.
KeywordsStar Formation Wavelet Decomposition Stellar Population Adaptive Grid Dark Cloud
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