This page describes the input parameters appearing on the submission page. For more detailed information about these parameters, consult the full MESA documentation.
- Initial Properties
- Nuclear Reactions
- Numerical Resolution
- Custom Stopping Condition
- Initial mass of the star, in solar masses. Must lie in the range [0.1,100].
- Initial uniform metallicity of the stellar material, expressed as the mass fraction of metals.
- Rotation Rate (ΩZAMS/Ωcrit)i
- Initial uniform rotation rate of the star, expressed as the ratio between the rotational angular velocity and the critical angular velocity. Must lie in the range [0.0, 1.0].
- Name of the nuclear reaction network. See MESA-Web Nuclear Reaction Networks for further details.
- Custom Nuclear Reaction Rate
- Nuclear reaction to customize, expressed in compact notation.
- Upload Rate
- Name of upload file containing reaction rate data for customized reaction. This file must have the following format:
- Zero or more lines beginning with a hash (#) mark; these are treated as comments and ignored.
- Exactly one line consisting of a single integer, giving the number of subsequent T8/rate lines.
- One or more lines containing a space-separated T8/rate pair, where T8 is the temperature in units of 108 kelvin, and rate is the reaction rate in units of per second.
Interpolation is used to evaluate the rate between the tabulated values.
- Mixing Length Alpha (αMLT)
- Mixing length, in units of the local pressure scale height. Must be greater than or equal to zero.
- Mixing Length Theory Prescription
- Implementation of mixing-length theory for convective energy transport; one of:
- Disable convection, forcing energy transport to be purely radiative
- Prescription described by Chapter 14 of Cox & Giuli (1968)
- Prescription described by Böhm-Vitense (1958)
- Prescription described by Böhm & Cassinelli (1971)
- Prescription described by Mihalas (1978)
- Prescription described by Henyey, Vardya, and Bodenheimer (1965)
- Convective Premixing
- Enable the convective premixing (CPM) algorithm for placement of convective boundaries, as described by Paxton et al. (2019)
- Overshoot f
- Overshoot scale length parameter, as defined in eqn. 2 of Paxton et al. (2011). Must be greater than or equal to zero.
- Overshoot f0
- Overshoot boundary offset parameter, as explained below eqn. 2 of Moravveji et al. (2016). Must be greater than or equal to zero.
- Semi-Convection Alpha (αsemi)
- Semi-convection efficiency parameter, as defined in eqn. 12 of Paxton et al. (2013). Must be greater than or equal to zero.
- Thermohaline Alpha (αth)
- Thermohaline efficiency parameter, as defined in eqn. 14 of Paxton et al. (2013). Must be greater than or equal to zero.
- Thermohaline Mixing Prescription
- Implementation of thermohaline mixing; one of:
- Prescription described by Kippenhahn et al. (1980)
- Prescription described by Traxler et al. (2013)
- Prescription described by Brown et al. (2013)
- Red Giant Branch Wind Prescription
- Implementation of wind mass loss on the red giant branch; one of:
- Prescription described by Reimers (1975)
- Prescription described by Blöcker (1995)
- Prescription described by Kudritzki et al. (1989)
- Prescription described by Nieuwenhuijzen & de Jager (1990)
- Prescription described by Vink et al. (2001)
- Prescription described by Gräfener & Hamann (2008)
- Prescription described by Glebbeek et al. (2009)
- RGB Wind Scaling Factor
- Scaling factor for wind mass loss rate on the red giant branch. Must be greater than or equal to zero.
- Asymptotic Giant Branch Wind Prescription
- Implementation of wind mass loss on the red giant branch; same options as Red Giant Branch Wind Prescription.
- AGB Wind Scaling Factor
- Scaling factor for wind mass loss rate on the asymptotic giant branch. Must be greater than or equal to zero.
Spatial (Mass) Resolution - Global
- Mesh Delta Coefficient
- Spatial grid resolution coefficient. A larger value increases the maximum allowed spacing between grid points, and so decreases the total number of grid points; vice-versa for a smaller value. Doubling the coefficient will roughly (but not exactly) half the number of grid points.
Temporal (Time) Resolution - Global
- Variance Control Target
- Target value for relative model variation between one timestep and the next. A larger value allows for larger timesteps; vice-versa for a smaller value.
- Minimum hydrogen mass fraction at which drops in hydrogen abundance, due to nuclear burning, are monitored when choosing timesteps.
Temporal (Time) Resolution - Hydrogen
- Logarithm of minimum central hydrogen abundance at which delta_lg_XH_cntr_limit and delta_lg_XH_cntr_hard_limit apply.
- Logarithm of maximum central hydrogen abundance at which delta_lg_XH_cntr_limit and delta_lg_XH_cntr_hard_limit apply.
- Limit for change in logarithm of central hydrogen abundance, across a single timestep; timesteps are reduced to attempt to honor this limit.
- Hard limit for change in logarithm of central hydrogen abundance, across a single timestep; timesteps are reduced to guarantee this limit is honored.
Custom Stopping Condition
- Quantity to monitor to decide when to stop the calculation.
- Corresponding value to monitor.
- Detailed Profile Output Frequency
- Number of timesteps between consecutive profile (detailed structure) files.
- MESA Release
- Release (version) of the MESA code to use for calculations. Leave as the default value unless trying to reproduce legacy calculations.
- Email Address
- Email address to send Zip archive to, upon job completion (either through the stopping condition being met, or the 2-hour time limit being reached; whichever comes first). See the MESA-Web Output page for details of the contents of the archive.
Updated 2021-08-04 20:59:35