Abstract Details
| Name: Ruchi Pandey Affiliation: SNBNCBS, Kolkata Conference ID: ASI2019_240 Title : Analysis of dusty nova using photoionization code CLOUDY Authors and Co-Authors : Ruchi Pandey, Ramkrishna Das Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : Out of a large number of novae discovered, only a few (about 20%-25%) have been found to form dust in the ejecta. The event of formation and destruction of dust grains in the ejecta takes place within few days to ~40 days. This gives a better opportunity to understand the formation and destruction of grains and their properties in a short timescale. As a part of this work, we have studied two dust forming novae, V1280 Sco (Optically thick dust forming Nova), and V476 Scuti (Optically thin dust forming Nova) using the photoionization modelling of the optical and NIR spectra. We used the photoionization code CLOUDY c17.00 for modelling observed optical and near-IR spectra. We generated several spectra by varying associated parameters; the best-fit spectra was chosen by minimization technique. From the best fit model, we estimated various parameters, viz., the temperature and luminosity of the central hot white dwarf, elemental abundances etc. From model output spectra, we also identified the spectral features in more details. |