naa a22 4500 510732259 CHVBK 20180411082957.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1134/S1063772913100065 doi (NATIONALLICENCE)springer-10.1134/S1063772913100065 Hot degenerate dwarfs in a two-phase model [Elektronische Daten] [M. Vavrukh, S. Smerechinskii] The characteristics of degenerate dwarfs-core radius, mass, and energy, thickness of their outer layers-are calculated based on a mechanical-equilibrium equation in a five-parameter, two-phase compositemodel with an isothermal core and a non-degenerate outer region. An accurate equation of state for the partially degenerate, ideal, relativistic electron gas of the core is used together with a polytropic approximation for the outer layers. The model parameters are determined using the known masses, radii, and luminosities of observed DA white dwarfs. A region where dwarfs can exist is identified in a plot of core temperature vs. the relativity parameter at the center of the star, and the dependence of the core temperature on the effective temperature of the photosphere is constructed. Pleiades Publishing, Ltd., 2013 Vavrukh M. Ivan Franko National University of Lvov, Lvov, Ukraine aut Smerechinskii S. Ivan Franko National University of Lvov, Lvov, Ukraine aut Astronomy Reports Springer US; http://www.springer-ny.com 57/12(2013-12-01), 913-983 1063-7729 57:12<913 2013 57 11444 https://doi.org/10.1134/S1063772913100065 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063772913100065 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vavrukh M. Ivan Franko National University of Lvov, Lvov, Ukraine aut NATIONALLICENCE 700 1- Smerechinskii S. Ivan Franko National University of Lvov, Lvov, Ukraine aut NATIONALLICENCE 773 0- Astronomy Reports Springer US; http://www.springer-ny.com 57/12(2013-12-01), 913-983 1063-7729 57:12<913 2013 57 11444 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer