Extinction map of the Chamaeleon I molecular cloud with DENIS star counts
Astrophysics
2007-05-23 v1
Abstract
Massive, large scale star counts in the J band provided by the Deep Near Infrared Survey of the Southern Sky (DENIS) are used for the first time to draw out an extinction map of the Chamaeleon I dark cloud. We derived a 2 arcminutes resolution map of the cloud from J star counts within an area of 1.5 x 3 degres around the centre of the cloud using an adaptive grid method and applying a wavelet decomposition. A comparison of our extinction map with the cold contribution of the IRAS 100 microns emission shows an almost perfect matching. It is shown that J star counts supersede optical counts on Schmidt plate where Av > 4.
Keywords
Cite
@article{arxiv.astro-ph/9706035,
title = {Extinction map of the Chamaeleon I molecular cloud with DENIS star counts},
author = {L. Cambresy and N. Epchtein and E. Copet and B. de Batz and S. Kimeswenger and T. Le Bertre and D. Rouan and D. Typhene},
journal= {arXiv preprint arXiv:astro-ph/9706035},
year = {2007}
}
Comments
4 pages, accepted for publication in Astronomy & Astrophysics Letters