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Modeling of H II region radiation surrounding the starburst knot taking into account the evolution of structures formed by the superwind

  • Extragalactic Astronomy
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Abstract

The method for the multicomponent photoionization modeling of the H II region radiation surrounding the starburst knot is presented. The internal structure of the H II region has been determined using the evolutionary model of the superwind bubble from the starburst center. Models of Chevalier and Clegg (1985) and Weaver et al. (1977) have been used to determine the radial distribution of the gas density, the velocity of gas layers, and the temperature in the region of the superwind free expansion and in the cavity, respectively. The chemical content of the internal components of the bubble has been set by the results of the modeling of the evolutionary population synthesis. External components of our models describe a high-density, thin layer of gas formed by the shock wave of stellar superwind from the surrounding gas and a typical H II region, respectively. Input model parameters have been taken from the precalculated evolutionary starburst models based on three types of evolutionary tracks. Evolutionary grids of multicomponent low-metallicity models are calculated. A comparative analysis of the results of their calculation with the observational data has been carried out.

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Authors and Affiliations

  1. Department of Astrophysics, Ivan Franko National University of Lviv, Lviv, Ukraine

    I. O. Koshmak & B. Ya. Melekh

Authors
  1. I. O. Koshmak
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  2. B. Ya. Melekh
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Correspondence to I. O. Koshmak.

Additional information

Original Russian Text © I.O. Koshmak, B.Ya. Melekh, 2017, published in Kinematika i Fizika Nebesnykh Tel, 2017, Vol. 33, No. 2, pp. 3–23.

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Koshmak, I.O., Melekh, B.Y. Modeling of H II region radiation surrounding the starburst knot taking into account the evolution of structures formed by the superwind. Kinemat. Phys. Celest. Bodies 33, 39–54 (2017). https://doi.org/10.3103/S0884591317020040

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  • DOI: https://doi.org/10.3103/S0884591317020040

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