Stellar Model Parameters
The &model
namelist group defines stellar model parameters, as
follows:
model_type
Type of model to use; one of:
'HOM'
: Homogeneous compressible model'POLY'
: Polytropic model read from external file'ANAPOLY_0'
: Analytic polytropic model with \(\npoly=0\)'ANAPOLY_1'
: Analytic polytropic model with \(\npoly=1\)'ANAPOLY_5'
: Analytic polytropic model with \(\npoly=5\)'ANAPOLY_5_1'
: Analytic polytropic model with \(\npoly=5,1\)'EVOL'
: Evolutionary model read from external file
file
Name of file (when
model_type
='POLY'
|'EVOL'
)file_format
Format of file (when
model_type
='EVOL'
); one of'AMDL'
: AMDL-format binary file'B3'
: B3-format HDF5 file'FAMDL'
: FAMDL-format text file'FGONG'
: FGONG-format text file'GSM'
: GSM-format HDF5 file'LOSC'
: LOSC-format text file'MESA'
: MESA/GYRE-format text file'OSC'
: OSC-format text file'WDEC'
: WDEC-format text file
data_format
(default''
, indicates auto-select)Fortran format specifier for data read from OSC-, FGONG- and FAMDL-format files
deriv_type
(default'MONO'
)Cubic interpolation derivatives type (when
model_type
='EVOL'
andinterp_type
='CUBIC'
); One'SPLINE'
: Spline (non-local) derivatives'FINDIFF'
: Finite-difference derivatives'MONO'
: Monotonized derivatives (default)
Gamma_1
(default5/3
)First adiabatic exponent (when
model_type
='HOM'
|'ANAPOLY_*'
)theta_s
(default0
)Surface value of polytropic dependent variable (when
model_type
='ANAPOLY_0'
|'ANAPOLY_1'
|'ANAPOLY_5'
)x_match
(default0.5
)Radial coordinate of match point between inner and outer regions (when
model_type
='ANAPOLY_5_1'
)grid_type
(default'UNI'
)Model grid type (when
model_type
='HOM'
|'ANAPOLY_*'
); one of'UNI'
: Uniform spacing'GEO'
: Geometric spacing'LOG'
: Logarithmic spacing
n
(default10
)Number of points in model grid (when
model_type
='HOM'
|'ANAPOLY_*'
)s
(default1
)Skewness parameter for model grid (when
model_type
='HOM'
|'ANAPOLY_*'
andgrid_type
='GEO'
|'LOG'
)x_i
(default0
)Inner boundary coordinate of model grid (when
model_type
='HOM'
|'ANAPOLY_*'
)x_o
(default1
)Outer boundary coordinate of model grid (when
model_type
='HOM'
|'ANAPOLY_*'
)dx_snap
(default0
)Threshold for snapping model points together, when
model_type
is'EVOL'
. If a pair of points are separated by less thandx_snap
, they are snapped together.add_center
(default.TRUE.
)Flag to add a center point to the model (when
model_type
='EVOL'
|'POLY'
). If a point does not already exist at the origin, then one is addedinterp_type
(default'CUBIC'
)Interpolation type (when
model_type
='EVOL'
|'POLY'
); one of'CUBIC'
: Piecewise cubic'LINEAR'
: Piecewise linear
repair_As
(default.FALSE.
)Flag to repair inaccuracies in the dimensionless Brunt-Väisälä frequency at density discontinuities
constrain_derivs
(default.TRUE.
)Flag to constrain first derivatives of \(V_2\), \(U\) and \(c_1\) structure coefficients, in accordance with equations (20) and (21) of Takata (2006a) and the hydrostatic equilibrium equation (when
model_type
='EVOL'
)