Formation of chondrules in radiative shock waves

Joham, H.; Dorfi, E. A.

doi:10.1051/0004-6361/201118467

Cited by 2 publications

(1 citation statement)

References 23 publications

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“…For example, 3.3 and ∼2 μm in the reflection nebula NGC 2023 in recent decades have no definite physical separation and chemical carrier certification (Duley 1976;An & Sellgren 2003;Draine 2003). Joham & Dorfi (2012), and Hanine et al (2020) suggested that the Onion−Like (3D Spherical) nano-structures in the ISM are likely to grow through Layer−By−Layer adsorption and evolution. In this article, we do not calculate the chemical reaction and the process of dust structure growth.…”

Section: Introductionmentioning

confidence: 99%

Radiation Spectral Analysis of 3D Dust Molecular Clusters (PAHs) and Peptoids under Ionization and Electric Field in ISM

Wu,

Zhu,

Lü

et al. 2023

Res. Astron. Astrophys.

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The polycyclic aromatic hydrocarbons (PAHs), PANHs, and peptoids dustspectral calculations from the interstellar medium (ISM) is important for dust obser vations and theory. Our goal is to calculate the radiation spectrum of spherical PAHsdust clusters in a vacuum containing ionized and applied in the presence of electricfield. And we propose a new simple computational model to calculate the size of three dimensional (3D) spherical dust clusters formed by different initial dust structures. By Vienna Ab−initio Simulation Package (VASP) code, the density functional theory (DFT) with the generalized approximation (GGA) was used to calculate the electron density gradient and obtain the radiation spectrum of dust. When the radius of spherical dust clusters is ∼ [0.009−0.042] µm, the dust radiation spectrum agrees well with the Z=0.02mMMP stellar spectrums, and the PAHs radiation spectrum of NGC 4676 at wavelengths of (0-5] µm and (5-10] µm, respectively. In the ionized state, the N-PAH, C10H9N, 2(C4H4)1+, and peptoids 4(CHON), (C8H10N2O5)1+ dust clusters at 3.3 µm, while the 2(C22H21N3O2)1+, 4(CHON) dust clusters at 5.2 µm have obvious peaks. There is a characteristic of part of PAHs and peptoids clusters radiation at the near-infrared wavelength of 2 µm. However, especially after applying an electric field to the dust, the emission spectrum of the dust increase significantly in the radiation wavelength range [3-10]µm. Consequently, the dust clusters of PAHs, PANHs, and peptoids of the radius size ∼[0.009−0.042] µm are likely to exist in the ISM.

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