Speaker Name:
Dr. Noriyuki Matsunaga
Speaker Affiliation:
Astronomy Department, Kyoto University, Japan
Talk Subject:
Near-IR observations of variable stars in globular clusters
Date:
09/03/2007 - 13:00
We conducted a near-IR survey for variable stars in globular clusters by using the Infrared Survey Facility (IRSF) in Sutherland. Our targets are long-period variables with P > 1 day such as type II Cepheids and Miras. Based on the four-year survey toward 145 globular clusters started in 2002, we obtained a catalogue with 712 listed variables, which is the most extensive and complete catalogue so far. After introducing our observations and the obtained catalogue, I will present some results about the period-luminosity relations of type II Cepheids and red variables.