“Mass Transfer in Binary Systems of a White Dwarf”

  
Ø* Speaker : Prof. Heewon Lee[Sejong University]
Ø* Place : Demonstration Lecture Hall 122,피망 바카라Postech Information Research Laboratories
Ø* Date & Time : Nov,피망 바카라27(Fri)피망 바카라4:00 ~ 5:00 pm

  
ØAbstract
  
Many interesting astrophysical phenomena are known in binary systems containing a
white dwarf when the피망 바카라companion피망 바카라star피망 바카라loses피망 바카라some피망 바카라its피망 바카라mass.피망 바카라White피망 바카라dwarf피망 바카라binary
systems are progenitors of Type Ia supernovae, which피망 바카라are피망 바카라important피망 바카라to피망 바카라probe피망 바카라the
accelerated expansion of the universe.피망 바카라Outward transport of angular momenta leads
to the formation of an accretion disk around the white dwarf. Many details in accretion
flow are known피망 바카라in피망 바카라close피망 바카라binary피망 바카라systems,피망 바카라which are collectively피망 바카라called cataclysmic
variables. Much less is known in the case of wide binaries known as symbiotic stars,
where mass transfer is achieved via gravitational capture of slow stellar wind.피망 바카라In피망 바카라this
talk, a brief introdcution to accretion phenomena in binary systems피망 바카라of피망 바카라awhite피망 바카라dwarf
will be given with some observational results obtained from Mt. Bohyun.
                    

              Contact Person : Prof. Jaemo Park (054-279-2090, jaemo@postech.ac.kr)