
           **************************************************
           *  Tables of Brown dwarf and exoplanet evolution *
           **************************************************


CONTENTS OF THE DIRECTORY

This directory contains tables of the evolution of brown dwarfs and exoplanets
based on the model described in Saumon & Marley (2008).  This publication provides 
a detailed description of the physics included in the model as well as a 
comparison with the evolution sequences from other groups.

Several evolution sequences are included, which differ only in the choice of 
the surface boundary condition, which is extracted from model atmospheres.

            Atmosphere model                   File names

     Cloudless             [M/H]=0             nc_solar_***
     Cloudless             [M/H]=+0.3          nc+0.3_***
     Cloudless             [M/H]=-0.3          nc-0.3_***
     Cloudy (Fsed=2)       [M/H]=0             f2_solar_***
     Hybrid (Fsed=2 to nc) [M/H]=0             hybrid_solar_***

The atmosphere models are described in Saumon & Marley (2008) and
Marley et al. (2002).  Fsed is the cloud sedimentation parameter 
(Ackerman & Marley 2001).  The hybrid sequence is a toy model 
of the transformation of the atmosphere from cloudy to clear 
that occurs at the transition between spectral types L and T 
(see Saumon & Marley 2008).

Three tables are provided for each sequence. The evolution is tabulated 
holding the mass, the age or the bolometric luminosity fixed, with file 
names ending with '_mass' (e.g. 'nc_solar_mass'), '_age', or '_Lbol', 
respectively.  There is a total of 5 sequences X 3 tabulations = 15 tables.


CONTENTS OF THE FILES

All files are in ascii and contain the basic evolution parameters.
As an example, the beginning of the file 'nc_solar_mass' is

M/Msun   age(Gyr)  log L/Lsun  Teff(K)  log g  R/Rsun
  15
 0.002    0.0030     -4.698      998.   3.389  0.1496
 0.002    0.0040     -4.853      924.   3.410  0.1459
 0.002    0.0060     -5.066      830.   3.436  0.1417
 0.002    0.0080     -5.226      765.   3.453  0.1389
 0.002    0.0100     -5.348      718.   3.465  0.1370
 0.002    0.0150     -5.561      642.   3.484  0.1340
 0.002    0.0200     -5.718      591.   3.497  0.1321
 0.002    0.0300     -5.928      528.   3.513  0.1297
 0.002    0.0400     -6.077      488.   3.524  0.1281
 0.002    0.0600     -6.273      439.   3.537  0.1261
 0.002    0.0800     -6.415      407.   3.547  0.1247
 0.002    0.1000     -6.522      384.   3.554  0.1237
 0.002    0.1500     -6.707      348.   3.566  0.1219
 0.002    0.2000     -6.845      323.   3.575  0.1207
 0.002    0.3000     -7.035      291.   3.587  0.1191
  17
 0.003    0.0030     -4.318     1221.   3.534  0.1549
 0.003    0.0040     -4.474     1133.   3.561  0.1502
 0.003    0.0060     -4.689     1020.   3.593  0.1448
 0.003    0.0080     -4.850      940.   3.613  0.1415
 0.003    0.0100     -4.975      883.   3.628  0.1392
 0.003    0.0150     -5.196      787.   3.650  0.1357

Column 1: mass is solar mass (adopted Msun=1.989E+33 g)
Column 2: age in Gyr
Column 3: log (Lbol/Lsun) (log Lsun=33.5827 in erg/s/cm^2)
Column 4: Teff in K
Column 5: log of gravity in cm/s^2
Column 6: radius in solar units (Rsun=6.9599E+10 cm)

Each block of lines is for one value of the mass/age/Lbol and 
is preceded by an entry giving the number of lines in the 
following block.

The tables are limited to the following ranges:
  0.002 < M/Msun < 0.085 
  300 < Teff (K) < 2400 
  3 Myr < age < 15 Gyr

Fine grids in mass, age and Lbol are used and, when necessary, an entry 
is provided outside these ranges to aid with interpolation.


CREDITS:

If you use these tables in your research, please cite Saumon & Marley (2008)


REFERENCES:

Ackerman, A.S. & Marley, M.S. 2001, Astrophys. J. 556, 872
Marley, M.S. et al. 2002, Astrophys. J. 568, 335
Saumon, D. & Marley, M.S. 2008, Astrophys. J. 689, 1327


INQUIRIES: 

Please contact 

Didier Saumon
dsaumon@lanl.gov
505-665-3469

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These tables have been approved by LANL for unlimited release (LA-UR-10-07033)

19 October 2010
