THREE-DIMENSIONAL RADIATION TRANSFER IN YOUNG STELLAR OBJECTS

Effects of Energetic Radiation in Young Stellar Objects

Radiative transfer in the clumpy environment of young stellar objects

We developed a Monte-Carlo code for the treatment of the radiative transfer in arbitrary clumpy dust configurations. Both the radiation of the (central) energy source(s) and the thermal emission of the dust are considered. Intensity and polarization maps of the modelled objects can be computed. As the first application of our code we studied the radiative transfer in a spherical two-phase clump...

High Energy Processes in Young Stellar Objects

In this paper, I present background knowledge for high energy processes in Young Stellar Objects(YSO), including observation results, theoretical model. In addition, I also summarize the recent development in the field of high energy processes in YSO, especially the relationship between X-ray luminosity and rotational period. 1. Young Stellar Objects(YSO) Pierre-Simon Laplace in his Expositiond...

Accretion in Young Stellar/Substellar Objects

We present a study of accretion in a sample of 45 young, low mass objects in a variety of star forming regions and young associations, about half of which are likely substellar. Based primarily on the presence of broad, asymmetric Hα emission, we have identified 13 objects (∼30% of our sample) which are strong candidates for ongoing accretion. At least 3 of these are substellar. We do not detec...

Magnetospheric outflows in young stellar objects

Different classes of outflows are associated with the magnetospheric activity of accreting T Tauri protostars. Stellar winds are accelerated along the open field lines anchored in the stellar surface; disk winds (extended or X-type) can be launched along the open magnetic surfaces threading the accretion disk; another type of ejection can arise from the region of interaction of the closed magne...