J/ApJS/215/21 Hydrogen and Helium EOS in brown dwarfs (Becker+, 2014)
Ab initio equations of state for hydrogen (H-REOS.3) and helium (He-REOS.3) and
their implications for the interior of brown dwarfs.
Becker A., Lorenzen W., Fortney J.J., Nettelmann N., Schottler M.,
Redmer R.
<Astrophys. J. Suppl. Ser., 215, 21 (2014)>
=2014ApJS..215...21B 2014ApJS..215...21B (SIMBAD/NED BibCode)
ADC_Keywords: Models ; Planets
Keywords: brown dwarfs; dense matter; equation of state;
planets and satellites: individual: Jupiter; plasmas; stars: low-mass
Abstract:
We present new equations of state (EOSs) for hydrogen and helium
covering a wide range of temperatures from 60K to 107K and densities
from 10-10g/cm3 to 103g/cm3. They include an extended set of
ab initio EOS data for the strongly correlated quantum regime with an
accurate connection to data derived from other approaches for the
neighboring regions. We compare linear mixing isotherms based on our
EOS tables with available real mixture data. A first important
astrophysical application of this new EOS data is the calculation of
interior models for Jupiter and comparison with recent results.
Second, mass-radius relations are calculated for Brown Dwarfs (BDs)
which we compare with predictions derived from the widely used EOS of
Saumon, Chabrier, and van Horn. Furthermore, we calculate interior
models for typical BDs with different masses, namely, Corot-3b,
Gliese-229b, and Corot-15b, and the giant planet KOI-889b. The
predictions for the central pressures and densities differ by up to
10% dependent on the EOS used.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 52 4410 The H-REOS.3 table
table3.dat 52 2156 The He-REOS.3 table
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See also:
J/ApJ/750/52 : Jupiter model with improved EOS (Nettelmann+, 2012)
J/ApJ/726/L19 : Gunn r photometry of WASP-30 (Anderson+, 2011)
J/A+A/491/889 : CoRoT-Exo-3b observations (Deleuil+, 2008)
Byte-by-byte Description of file: table[23].dat
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Bytes Format Units Label Explanations
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1- 12 E12.6 g/cm3 rho Density ρ
14- 25 E12.6 K T [60/1.e7] Temperature
27- 38 E12.6 GPa P Pressure
40- 52 E13.6 kJ/g u [-1843/367628] Specific internal energy
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-Feb-2015