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

[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.

[发布机构] 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

[效力级别] 天文学 [学科分类] 天文学(综合)

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