[Mesa-users] BD deuterium burning

Bear Ealeal ealeal44 at yahoo.com
Wed Aug 6 16:26:50 UTC 2025


Dear Mesa-users,

I am workingon MESA 23.5.1 and I run the example from test -suite named: "make_brown_dwarf" with no changes.

mass andradius are:

mass_in_gm_for_create_initial_model= 1.9892d31 ! 0.01 Msun;  m_jupiter =1.8986d30; msun = 1.9892d33

   radius_in_cm_for_create_initial_model =3.5d10 ! 5 r_jupiter; r_jupiter = 6.9911d9. ok for most brown dwarfs.
The age when the inilist stops is 2Gyr. 
However, I do not get deuterium burning although I get raw_rate_r_h2_pg_he3 up to 1e18, thetemperature at the center is too low also and there is no increase even not in the core in He3.Does someone have experience with BDin MESA, especially how to make the deuterium burn ?
Thanks,

Ealeal

 

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