Abstract Details
| Name: Sindhu N Affiliation: VIT University Conference ID: ASI2015_511 Title : Simulations of old open clusters for UVIT on ASTROSAT Authors and Co-Authors : Sindhu N(1), Annapurni Subramaniam(2), C Anuradha(1) (1) VIT University, Vellore (2) Indian Institute of Astrophysics,Bangalore Abstract Type : Poster Abstract Category : Stars, The Milky Way Galaxy and its neighbours Abstract : We present the simulations for three old open clusters M67, NGC 188 and NGC 6791 for the Ultra Violet Imaging Telescope (UVIT). UVIT is one of the payloads on the first multi wavelength satellite ASTROSAT expected to be launched by ISRO launch vehicle PSLV in the year 2015. The colour magnitude diagrams and spatial appearance of these cluster have been created using 10 filters in FUV (125 - 180 nm) and NUV channels (200 - 300 nm). The CMDs are simulated for different filter combinations and they are used to identify the locii of various evolutionary sequences, white dwarfs, blue stragglers, red giants, sub giants, turn off stars and the main sequence of the clusters. The present work helps in identifying the potential area of study in the case of three old open clusters, by considering the availability of filters and the detection limits of the instrument. We also recommend filter combinations which can be used to detect and study the above mentioned evolutionary stages. We compared our simulations with the GALEX data for two filters and they are found to be similar. The simulations and the results are essential for the optimal use of the UVIT for studies of old open clusters. |