Thermodynamics over the Web

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Дата изменения: Sun May 2 18:15:55 2004
Дата индексирования: Mon Oct 1 21:45:49 2012
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Поисковые слова: comet tail

Get thermodynamics values for any combination of temperature, density and hydrogen mass fraction using MHD, OPAL or ISG equations of state.

Server runs on Dual Celeron 466MHz with 16MB of RAM, so please be patient.

Currently, allowed ranges are as follows:

Temperature 3.0 < lg T < 7.5
Density function -2.0 < lg Q < 1.0
Hydrogen abundance 0.2 < X < 0.8
Heavy elements abundance 0.010 < Z < 0.025
Q is rho/(T/10^6)**3, i.e. lg Q = lg rho + 18.0 - 3.0 * lg T

Proceed to entering input values

References

MHD
1. Hummer, D.G., Mihalas, D., 1988. Ap.J. 331, 794-814.
2. Mihalas, D., Dappen W. and Hummer, D.G., 1988. Ap.J., 331, 815-825.
3. Dappen, W., Mihalas, D., Hummer, D.G. and Mihalas, B.W., 1988. Ap.J., 332, 261-270.
OPAL
1. Rogers, F.J., 1994. in IAU Colloq. 147, The Equation of State in Astrophysics, ed. G.Chabrier & E.L.Schatzman (Cambridge: Cambridge Univ. Press), 16
2. Rogers, F.J., Swenson, F.J., Iglesias, C.A., 1996. Ap.J., 456, 902-908.

Send your comments to Sergey Ayukov

Temperature	3.0 < lg T < 7.5
Density function	-2.0 < lg Q < 1.0
Hydrogen abundance	0.2 < X < 0.8
Heavy elements abundance	0.010 < Z < 0.025