Abstract Details

Name: Rahul Bandyopadhyay
Affiliation: S. N. Bose National Centre for Basic Sciences
Conference ID: ASI2020_414
Title : Morphology and Ionization Characteristics of Planetary Nebulae PB 1 and PC 19
Authors and Co-Authors : Rahul Bandyopadhyay, Ramkrishna Das and Soumen Mondal
Abstract Type : Poster
Abstract Category : Stars, ISM and Galaxy
Abstract : In this work, we present results of our study of two planetary nebulae (PNe), PB1 and PC 19. The study has been done using the optical spectra of these PNe observed at 2 m Himalayan Chandra Telescope (HCT) along with archival and literature data. We use the morpho-kinematic code SHAPE for 3D morphological modeling and the photoionization code CLOUDY for photoionization modeling of the PNe. The 3D model of PB 1 consists of an elongated shell surrounded by a bipolar halo and that of PC 19 consists of an open lobed bipolar structure and a spiral filamentary pair. We study the ionization structure of the PNe by plasma analysis and photoionization modeling. We estimate the elemental abundances of the the elements, He, C, N, O, Ne, S, Ar, Cl, from our analysis, and also estimate different physical parameters of the central stars, viz. effective temperature, luminosity and gravity, and of the nebula, viz. hydrogen density profiles, radii etc from photoionization modeling. We estimate distances to PB 1 as 3.5 kpc and to PC 19 as 5 kpc by fitting the photoionization models to absolute observed fluxes. We estimate progenitor masses, from theoretical evolutionary trajectories, as ∼1.54 solar masses and ∼1.96 solar masses for PB 1 and PC 19, respectively.