IPM Calendar 
Sunday 24 September 2017   Today  
Events for day: Saturday 07 January 2017    
           11:00 - 12:30     Weekly Seminar
Probing the effect of UV radiation on the chemistry around evolved stars


UV radiation fields impact the chemistry of circumstellar envelopes (CSEs) around evolved stars. However, there is little research on the influence of internal UV sources such as chromospheric activity and binary companions on the physical and chemical conditions of CSEs, since previous studies are mostly based on low-resolution single-dish observations which are unable to resolve such effects. The ALMA observations of R Scl, a carbon AGB star, have provided high spatial resolution observations of 12CO, 13CO and H13CN line emission which have deepened our understanding of the effect of UV chemistry around R Scl. In this talk, I will discuss t ...