Abstract
The mixing of metals and redistribution of the relative abundances of chemical elements in the interstellar medium often takes place on a timescale that exceeds the characteristic timescales for many other processes, such as ionization and the establishment of thermal equilibrium. Under these conditions, different regions of interstellar gas can have different thermal, chemical, and spectral properties. The paper considers the ionization kinetics and thermal regime of interstellar gas with variations in the relative elemental abundances. The thermal properties and observational (spectral) characteristics are most sensitive to variations of the relative abundance of carbon, oxygen, neon, and iron. The dynamic consequences of such variations are considered.
Similar content being viewed by others
References
D. Kunth and W. L. W. Sargent, Astrophys. J. 300, 496 (1986).
J.-R. Royand and D. Kunth, Astron. Astrophys. 294, 432 (1995).
M. de Avillez and M. M. Mac-Low, Astrophys. J. 581, 1047 (2002).
B. Edvardsson, J. Andersen, B. Gustafsson, D. L. Lambert, P. E. Nissen, and J. Tomkin, Astron. Astrophys. 275, 101 (1993).
L. Casagrande, R. Schönrich, M. Asplund, S. Cassisi, I. Ramirez, J. Melendez, T. Bensby, and S. Feltzing, Astron. Astrophys. 530, 138 (2011).
R. E. Luck, V. V. Kovtyukh, and S. M. Andrievsky, Astrophys. J. 132, 902 (2006).
E. A. Karitsakaya, N. G. Bochkarev, V. V. Shimansky, and G. A. Galazutdinov, ASP Conf. Ser. 445, 335 (2011).
N. G. Bochkarev, E. A. Karitskaya, V. V. Shimansky, and G. A. Galazutdinov, Astron. Nachr. 334, 835 (2013).
T. J. Satterfield, A. M. Katz, A. R. Sibley, G. M. MacAlpine, and A. Uomoto, Astron. J. 144, 27 (2012).
S. E. Woosley and T. A. Weaver, Astrophys. J. Suppl. 101, 181 (1995).
L. B. van den Hoek and M. A. T. Groenewegen, Astron. Astrophys. Suppl. Ser. 123, 305 (1997).
T. P. Snow and B. J. McCall, Ann. Rev. Astron. Astrophys. 44, 367 (2006).
K. Nomoto, C. Kobayashi, and N. Tominaga, Ann. Rev. Astron. Astrophys. 51, 457 (2013).
E. O. Vasiliev, Mon. Not. R. Astron. Soc. 414, 3145 (2011).
E. O. Vasiliev, Mon. Not. R. Astron. Soc. 431, 638 (2013).
G. J. Ferland, K. T. Korista, D. A. Verner, J. W. Ferguson, J. B. Kingdon, and E. M. Verner, Publ. Astron. Soc. Pacif. 110, 761 (1998).
O. Gnat and A. Sternberg,Astrophys. J. Suppl. 168, 213 (2007).
D. Hollenbach and C. F. McKee, Astrophys. J. 342, 306 (1989).
M. Asplund, N. Grevesse, and A. J. Sauval, in Cosmic Abundances as Records of Stellar Evolution and Nucleosynthesis, Ed. by T. G. Barnes III and F. N. Bash, ASP Conf. Ser. 336, 25 (2005).
J. J. Drake and P. Testa, Nature 436, 525 (2005).
Yu. I. Izotov and T. X. Thuan, Astrophys. J. 500, 188 (1998).
A. J. Fox, B. P. Wakker, B. D. Savage, T. M. Tripp, K. R. Sembach, and J. Bland-Hawthorn, Astrophys. J. 630, 332 (2005).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © E.O. Vasiliev, Yu.A. Shchekinov, 2016, published in Astronomicheskii Zhurnal, 2016, Vol. 93, No. 10, pp. 892–906.
Rights and permissions
About this article
Cite this article
Vasiliev, E.O., Shchekinov, Y.A. The influence of variations of elemental composition on the thermal properties of interstellar gas. Astron. Rep. 60, 924–938 (2016). https://doi.org/10.1134/S1063772916090079
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063772916090079