Abstract Details

Conference ID: ASI2017_1128
Title : Study of Nitrogen abundance in carbon stars
Authors and Co-Authors : Aruna Goswami Indian Institute of Astrophysics, Bangalore
Abstract Type : Poster
Abstract Category : Stars,ISM and the Galaxy
Abstract : Carbon stars provides a valuable information on the role of low- to intermediate-mass stars of the halo on the early Galactic chemical evolution. Thus a knowledge of the Carbon stellar population in our Galaxy is a critical requirement to build up scenarios of early Galactic chemical evolution.We present a quantitative assessment newly identified carbon star catalogued by Ji et al from Lamost DR2 catalogue. The carbon abundance is well studied but the nitrogen abundance in certain carbon stars are not well known. We study the nitrogen abundances of the carbon star by analysing the CN bands in the stellar spectra at different wavelength regions. We also investigate the reason behind nitrogen abundance of these star based on our analysis and its contribution to the understanding of evolution of our galaxy.