[Mesa-users] Modeling a Low-Mass Gas-Rich Planet

Brian Jackson bjackson at boisestate.edu
Wed Oct 9 19:48:39 EDT 2019


Dear MESA Users,
I'm trying to replicate some results from Chen & Rogers (2016 -
https://ui.adsabs.harvard.edu/abs/2016ApJ...831..180C/abstract), but
I'm having trouble.

I can successfully create the initial gas ball for the planet, but
when I try to insert a core, the code runs for a while and then seems
to hang when the core reaches about 0.2 Earth mass. I've attached a
text file showing the last several lines that keep repeating over and
over again.

I am running MESA version 11701 on Mac OS 10.13.1 (17B1003), and I
believe I'm using the MESA SDK from August 30 2019 (gfortran --version
returns "gcc.exec (GCC) 8.3.0"). I have attached the .mod file
representing the initial gas ball and the inlist I'm using to insert
the core.

(And apologies in advance for forgetting something in my e-mail or
sending the wrong files -- I give it 50-50 odds.)

Thanks for your help,
Brian

---------------------------------------------------
Brian Jackson, Associate Professor
Dept. of Physics
Boise State University
1910 University Drive
Boise ID 83725-1570

E-mail: bjackson at boisestate.edu
URL: http://www.astrojack.com
Phone: (208) 426-3723
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       step    lg_Tcntr    Teff     lg_LH       lg_Lnuc     Mass       H_rich     H_cntr     N_cntr     Y_surf     X_avg     eta_cntr  zones retry
   lg_dt_yr    lg_Dcntr    lg_R     lg_L3a      lg_Lneu     lg_Mdot    He_core    He_cntr    O_cntr     Z_surf     Y_avg     gam_cntr  iters bckup
     age_yr    lg_Pcntr    lg_L     lg_gsurf    lg_Psurf    lg_Dsurf   C_core     C_cntr     Ne_cntr    Z_cntr     Z_avg     v_div_cs     dt_limit
__________________________________________________________________________________________________________________________________________________

       1410   3.836313    283.888 -25.404952 -25.404952   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    660      0
  -1.436501  -1.110590  -0.185956 -99.000000 -26.802816 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547877      3      0
 2.0946E+01  10.423647  -5.605840   0.734375   3.996636  -6.009515   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00    varcontrol

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    1.1550760906728776D+06    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1411   3.836310    276.183 -25.404974 -25.404974   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    660      0
  -1.530693  -1.110600  -0.186127 -99.000000 -26.802838 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547866      3      0
 2.0975E+01  10.423631  -5.653983   0.734718   3.999893  -5.994309   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00    varcontrol

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    9.2986235350481141D+05    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1412   3.836312    281.976 -25.404959 -25.404959   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    641      0
  -1.429412  -1.110594  -0.186013 -99.000000 -26.802824 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547875      3      0
 2.1013E+01  10.423642  -5.617696   0.734490   3.997686  -6.005530   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00    varcontrol

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    1.1740846271683362D+06    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1413   3.836312    281.754 -25.404960 -25.404960   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    660      0
  -1.303275  -1.110594  -0.186003 -99.000000 -26.802824 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547876      3      0
 2.1062E+01  10.423641  -5.619046   0.734469   3.997782  -6.005091   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00    varcontrol

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    1.5697726383627139D+06    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1414   3.836313    283.854 -25.404952 -25.404952   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    641      0
  -1.400185  -1.110590  -0.185931 -99.000000 -26.802816 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547881      3      0
 2.1102E+01  10.423647  -5.606002   0.734326   3.996629  -6.009469   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00  max decrease

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    1.2558181106901711D+06    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1415   3.836315    286.934 -25.404939 -25.404939   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    660      0
  -1.495729  -1.110585  -0.185819 -99.000000 -26.802803 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547889      3      0
 2.1134E+01  10.423656  -5.587029   0.734101   3.994708  -6.016078   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00    varcontrol

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    1.0078193489988719D+06    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1416   3.836311    279.025 -25.404968 -25.404968   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    660      0
  -1.590104  -1.110597  -0.186014 -99.000000 -26.802832 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547874      3      0
 2.1160E+01  10.423636  -5.635971   0.734491   3.998948  -5.999700   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00    varcontrol

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    8.1097505342360109D+05    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1417   3.836314    285.300 -25.404946 -25.404946   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    641      0
  -1.494416  -1.110588  -0.185861 -99.000000 -26.802810 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547887      3      0
 2.1192E+01  10.423651  -5.597032   0.734185   3.995737  -6.012569   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00    varcontrol

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    1.0108707591488528D+06    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1418   3.836314    285.419 -25.404945 -25.404945   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    660      0
  -1.372879  -1.110587  -0.185831 -99.000000 -26.802809 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547888      3      0
 2.1234E+01  10.423651  -5.596247   0.734126   3.995635  -6.012852   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00    varcontrol

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    1.3373119213698863D+06    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06

       1419   3.836311    277.471 -25.404971 -25.404971   0.000084   0.000084   0.730000   0.001008   0.250000   0.730000 -19.999850    660      0
  -1.469789  -1.110599  -0.186033 -99.000000 -26.802836 -99.000000   0.000000   0.250000   0.009360   0.020000   0.250000  15.547875      3      0
 2.1268E+01  10.423633  -5.645714   0.734529   3.999473  -5.996749   0.000000   0.003442   0.002099  2.000E-02  2.000E-02  0.000E+00  max decrease

                           current & target core masses    5.0118723362729166D-07    6.0024130303639664D-05    9.9165023747796144D-01
                            s% dt < relax_core_dt*0.9d0    1.0698495370959090D+06    5.6804669971200004D+06
                                        s% max_timestep    3.1558149984000001D+07
                       s% max_years_for_timestep*secyer    6.3116299968000008D+06


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