Publications of the Astronomical Society of the Pacific

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ISSN / EISSN : 0004-6280 / 1538-3873
Published by: IOP Publishing (10.1088)
Total articles ≅ 17,492
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Shilong Liao, QiQi Wu, Zhaoxiang Qi, Zhenghong Tang, Hao Luo, Zihuang Cao
Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/ac1eeb

Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/ac20ab

Abstract:
In this work, we propose a proper plasma analysis practice (PPAP), an updated procedure of plasma diagnostics in the era of spatially resolved spectroscopy. In particular, we emphasize the importance of performing both of the extinction correction and the direct method of plasma diagnostics simultaneously as an integrated process. This approach is motivated by the reciprocal dependence between critical parameters in these analyses, which can be resolved by iteratively seeking a converged solution. The use of PPAP allows us to eliminate unnecessary assumptions that prevent us from obtaining an exact solution at each element of the spectral imaging data. Using a suite of Hubble Space Telescope/WFC3 narrowband images of the planetary nebula, NGC 6720, we validate PPAP by (1) simultaneously and self-consistently deriving the extinction, c(Hβ), and electron density/temperature distribution, (ne([S ii]), Te([N ii])), maps that are consistent with each other, and (2) obtaining identical metal abundance distribution maps, (n(N+)/n(H+), n(S+)/n(H+)), from multiple emission line maps at different wavelengths/transition energies. We also determine that the derived c(Hβ) consists both of the interstellar medium and circumsource components and that the ionized gas-to-dust mass ratio in the main ring is at least 437 and as high as about 1600. We find that, unless we deliberately seek self-consistency, uncertainties at tens of % can easily arise in outcomes, making it impossible to discern actual spatial variations that occurs at the same level, defeating the purpose of conducting spatially resolved spectroscopic observations.
Harrison J. Abbot, Josephine Munro, Tony Travouillon, Christopher Lidman, Bradley E. Tucker
Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/ac1f3b

V. Dobos, S. Charnoz, , A. Roque-Bernard, Gy. M. Szabó
Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/abfe04

Jayke Nguyen, S. Mark Ammons, Kaitlin Dennison, E. Victor Garcia, , Stephen McMillan, Maissa Salama
Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/ac17e3

S Davini, I Risso, M Scodeggio, L Paganin, S Caprioli, M Bonici, A Caminata, S Di Domizio, G Testera, S Tosi, et al.
Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/ac102e

Diane M. Pyper, Saul J. Adelman
Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/ac1ac0

Lu Feng, Kai Jin, Hong-Yang Li, Bo-Tian Sun, Min Li, Rui-Tao Wang, Qi Bian, Chen Wang, Ming Wang, Yue Liang, et al.
Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/ac1c60

Atila Poro, Ehsan Paki, Golnaz Mazhari, Soroush Sarabi, Filiz Kahraman Alicavus, Farzaneh Ahangarani Farahani, Hamidreza Guilani, Alexander A. Popov, Alexandra M. Zubareva, Behjat Zarei Jalalabadi, et al.
Publications of the Astronomical Society of the Pacific, Volume 133; https://doi.org/10.1088/1538-3873/ac12dc

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