aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 17 10.31059/aat.vol2.iss1.pp26-29 Research articles Influence of the scattering particle shape on the SiO2 silicate feature Petrov Dmitry Zhuzhulina Elena Savushkin Alexander Crimean Astrophysical Observatory, Nauchny, 298409 Crimean Astrophysical Observatory, Nauchny, 298409 Crimean Astrophysical Observatory, Nauchny, 298409 30 09 2021 2 1 26 29 30 09 2021 Copyright (c) 2021 Dmitry Petrov, Elena Zhuzhulina, Alexander Savushkin 2021 Dmitry Petrov, Elena Zhuzhulina, Alexander Savushkin The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Acta Astrophysica Taurica is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

Silicate dust particles are part of many astronomical objects such as comets and circumstellar disks. In a spectrum, silicates exhibit a number of characteristic silicate emission features. To study these features, Mie’s theory is usually used. This theory assumes that the scattering object is an ideal sphere. In this work, we investigated the contribution of non-spherical quartz particles (SiO2) to these features. We studied the influence of the deviation from sphericity on the 10-micron silicate feature of quartz. It is shown that the deviation from sphericity has a significant effect on both the scattered light intensity and the scattering factor Qsca, and this effect increases with increasing scattering particle size. The main peculiarities of the 10-micron silicate feature have been studied for both prolate and oblate spheroids.

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