Extinction map of Chamaeleon I molecular cloud with DENIS star counts.
L. Cambresy, N. Epchtein, E. Copet, B. De Batz, S. Kimeswenger, T. Le Bertre, D. Rouan, D. Tiphene;
AaA, 1997, 324, L5
ABSTRACT:Massive, large scale star counts in the J (1.25{mu}m) 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' resolution map of the cloud from J star counts within an area of 1.5{deg}x3{deg} around the centre of the cloud using an adaptive grid method and applying a wavelet decomposition.
Possible contaminating young stellar objects within the cloud are removed, although they are shown to have a negligible effect on the counts.
A comparison of our extinction map with the cold contribution of the IRAS 100{mu}m emission shows an almost perfect matching.
It is shown that J star counts supersede optical counts on Schmidt plate where A_V_>4.
KEYWORDS: ism: clouds, ism: dust, extinction, ism: individual objects: chamaeleon (name chamaeleon 1
PERSOKEY:dust, extinction, optical, iras, fir, ,
CODE: cambresy97