Abstract Details
| Name: Rahul Bandyopadhyay Affiliation: SNBNCBS, Kolkata Conference ID: ASI2019_517 Title : Modeling the Morphology and Ionization Structure of Planetary Nebulae Authors and Co-Authors : Rahul Bandyopadhyay, Ramkrishna Das and Soumen Mondal Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : Planetary nebulae (PNe) form around low- to intermediate-mass stars when they shed their outer layers into interstellar space around them during the late phase of evolution. Study of PNe sheds light on the chemical and dynamical evolutionary history of the progenitor. Accurate physical models that theoretically represent the object of study gives a complete picture along with precise determination of the parameters. In this work we construct 3D morphological and photoionization models of PNe PB1 and PC19, for which we use archival (Hubble Space Telescope) HST image and optical spectra obtained using 2 m Himalayan Chandra Telescope (HCT), Hanle, India. We perform multicomponent 3D re-construction of the PNe with reference to the 2D images and determine several important structural parameters (e.g., radii, dimensions, density, orientation). We estimate the elemental abundances of the PNe and significant physical parameters of the central star (e.g., temperature, luminosity) and the nebula (e.g., density) as the result of the photoionization modeling and thus analyze the ionization structure of the PN. We also discuss the implication of the models towards understanding the PNe in chemical and dynamical evolutionary aspects. |