A multiwavelength study of the Stingray Nebula; properties of the nebula, central star, and dust

11th Pacific Rim Conference on Stellar Astrophysics: Physics and Chemistry of the Late Stages of Stellar Evolution

物理学;天文学

Otsuka, Masaaki^1 ; Parthasarathy, Mudumba^2 ; Tajitsu, Akito^3 ; Hubrig, Swetlana^4

ASIAA, 11F of Astronomy-Mathematics Building, AS/NTU, No.1, Roosevelt Rd, R.O.C., Taipei

10617, Taiwan^1

Indian Institute of Astrophysics, II Block Koramangala, Bangalore, Karnataka

560034, India^2

Subaru Telescope, 650 N Aohoku Place, Hilo

HI

96720, United States^3

Leibniz-Institut fuer Astrophysik Potsdam (AIP), An der Sternwarte 12, Potsdam

14482, Germany^4

关键词: Amorphous silicates;    Chemical abundance;    Elemental abundance;    Gas mass;    Multi-wavelength study;    Recombination lines;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/728/7/072011/pdf
DOI  :  10.1088/1742-6596/728/7/072011

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

We performed a detail chemical abundance analysis and photo-ionization modeling of the Stingray Nebula (Hen3-1357, Parthasarathy et al. 1993[1]) to more characterize this PN. We calculated nine elemental abundances using collisionally excited lines (CELs) and recombination lines (RLs). The RL C/O ratio indicates that this PN is O-rich, which is supported by the detection of the broad amorphous silicate features at 9 and 18 μm By photo-ionization modeling, we investigated properties of the central star and derived the gas and dust masses. The nebular elemental abundances, the core-mass of the central star, and the gas mass are in agreement with the AGB model for the initially 1.5 Mostars with the Z = 0.008.