Physical Properties, Abundances and Photoionization Modeling of 12 Galactic PNe

• Autorzy: Aksaker N. , Erzincan N. , Akyuz A. , Temiz U.

Identyfikatory

DOI

10.32023/0001-5237/74.3.2

• Języki publikacji: EN

Abstrakty

EN

In this study, we present the results of an investigation of the the physical properties, abundances, and photoionization modeling of planetary nebula (PN) candidates from the HASH database having small angular sizes (<8'' with one exception) and located in the Northern sky hemisphere. We collected new spectroscopic data of these objects. We confirmed 12 PNe using diagnostic diagrams, emission line ratios and calculated their physical conditions such as extinction coefficient, electron density, and electron temperature. We conducted elemental abundance calculations for the PNe and found that their abundances align with both solar and Galactic values. Additionally, utilizing photoionization models developed with the Cloudy code, we obtained the effective temperatures of central stars, which span from 40 000 K to 250 000 K, along with luminosities ranging from 400 L_⊙ to 10 000 L_⊙. We determined the initial mass values of the PNe to be in the 0.8-4.5 M_⊙ range on the HR diagram with post-AGB evolutionary tracks using their T_eff and luminosity values. Considering the final masses of these PNe, their mass losses were estimated to be approximately between 0.3 M_⊙ and 3.6 M_⊙. Notably, we found that the ages of the PNe, determined from post-AGB evolutionary tracks, varied from 120 to 34 000 yr, consistently with the earlier findings.

Słowa kluczowe

EN

planetary nebulae: general; ISM: abundances; dust; extinction; techniques: spectroscopic

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2024
• Tom: Vol. 74, No. 3
• Strony: 201--229
• Opis fizyczny: Bibliogr. 53 poz., tab., wykr., zdj.

Twórcy

autor

Aksaker N.

• Adana Organised Industrial Zones Vocational School of Technical Science, University of Çukurova, 01410 Adana, Türkiye
• Space Science and Solar Energy Research and Application Center (UZAYMER), University of Çukurova, 01330 Adana, Türkiye

autor

Erzincan N.

• Space Science and Solar Energy Research and Application Center (UZAYMER), University of Çukurova, 01330 Adana, Türkiye
• Astronomy and Astrophysics, University of Çukurova, 01410 Adana, Türkiye

autor

Akyuz A.

• Space Science and Solar Energy Research and Application Center (UZAYMER), University of Çukurova, 01330 Adana, Türkiye
• Department of Physics, University of Çukurova, 01410 Adana, Türkiye

autor

Temiz U.

• Space Science and Solar Energy Research and Application Center (UZAYMER), University of Çukurova, 01330 Adana, Türkiye

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).