Abstract Details
| Name: Chayan Mondal Affiliation: Indian Institute of Astrophysics Conference ID: ASI2016_737 Title : Star formation in the spiral galaxy NGC 300 Authors and Co-Authors : A. Subramaniam, K. George, Indian Institute of Astrophysics, Bangalore- 560034 Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : NGC 300 is a SA(s)d type galaxy in the sculptor group of galaxies at a distance of 2 MPc. It has a good inclination to study propagation of star formation. Since UV radiation can probe the recent activities, we have used the GALEX data in the FUV and NUV channels for this study. We used the FUV-NUV colour to derive the ages and for this, we generated diagnostic diagrams for GALEX colour with the help of starburst99 model. From the model we created color (FUV-NUV) vs age (1 to 900 Myr) dependency for different metallicities (Z= 0.04, 0.02, 0.001) assuming instantaneous star formation for an IMF 2.35. Considering an interstellar reddening (E(FUV-NUV)= -0.564) and observed metallicity (Z=0.02) of NGC 300 into account we have converted the observed color distribution to an age distribution. The result clearly shows that most of the young stellar populations are present close to the centre of the galaxy and also along the spiral arm. We present the results of this study here. |