X-ray emission from protostars
Abstract
I present the results of our Chandra deep exposure observations on star form- ing regions, rho-Ophiuchi and Orion Molecular Clouds 2 and 3. The results are; (1) class I protostars are found to exhibit higher temperature plasma than those of T Tauri stars, (2) X-ray spectra of protostars often show the 6.4 keV fluorescent iron line, strong evidence of dense gas or accretion disk around the star, (3) heavily absorbed X-rays are discovered from the cloud cores, candi- dates of class 0 protostars, (4) young brown dwarfs emit X-rays similar to those of low-mass young stars.
- Publication:
-
34th COSPAR Scientific Assembly
- Pub Date:
- 2002
- Bibcode:
- 2002cosp...34E1652K