Time Variability of Young Stellar Objects in the Chamaeleon I Dark Cloud

Details Time Variability of Young Stellar Objects in the Chamaeleon I Dark Cloud Time Variability of Young Stellar Objects in the Chamaeleon I Dark Cloud

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.9406c&link_type=abstract

American Astronomical Society Meeting 203, #94.06; Bulletin of the American Astronomical Society, Vol. 35, p.1360

Astronomy and Astrophysics

Astronomy

Scientific paper

We present new UBVRI and JHKLM photometry and medium resolution optical spectra for a sample of 17 young stellar objects in the Chamaeleon I dark cloud. These data are compared to previous photometry to assess time variability in: 1) the extinction toward the source; 2) stellar luminosity; 3) mass accretion rate onto the star; and 4) the structure of the circumstellar disk inside 1 AU. We also report the identification of a new "infrared companion" system - the pre-main sequence binary SX Cha. We present resolved photometry and spectra for the system and place constraints on the evolutionary state of both components.

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