Abstract Details
| Name: Subhankar Patra Affiliation: IIA, Bengaluru Conference ID: ASI2019_410 Title : The atmospheres of cool hydrogen-deficient carbon stars Authors and Co-Authors : Subhankar Patra, Gajendra Pandey Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : Abundance analyses of cool hydrogen-deficient carbon stars are being conducted using the state of art model atmospheres and the LTE radiative transfer code. In the literature, the abundance analyses of these stars are based on spectra recorded on photographic plates combined with the classical curve of growth analysis. Our aim is to measure the accurate surface abundances of these stars based on modern techniques and study their cool atmospheres. High-resolution CCD spectra will be used for determining their stellar parameters and surface composition. The line-blanketed model atmospheres for HdC stars combined with LTE radiative transfer code for line formation calculations will be used. We expect that a detailed study of the surface abundances of these stars would provide us with valuable insights to their origin and evolution including their connection to the other stars like DY Per stars, RCB stars, and EHe stars. |