This test case checks the creation and evolution of a 0.15 Msun helium white dwarf.
This test case has 3 parts. Click to see a larger version of a plot.
Part 1 (
inlist_to_he_core) creates a 1.5 Msun, Z=0.01 metallicity, pre-main sequence model and evolves the model until the helium core reaches 0.15 Msun:
Part 2 (
inlist_remove_envelope) relaxes the model to a new mass of 0.15 Msun, sheddind the outer 1.35 Msun with a wind whose maximum mass loss rate is 1e-5 Msun/yr, and then evolving the hot He white dwarf for 100 million years:
Part 3 (
inlist_evolve) continues the evolution as the 0.15 Msun helium white dwarf model slides down a white dwarf cooling track for 10 billion years:
pgstar commands used for the plots above:
&pgstar file_white_on_black_flag = .true. ! white_on_black flags -- true means white foreground color on black background !file_device = 'png' ! png !file_extension = 'png' file_device = 'vcps' ! postscript file_extension = 'ps' pgstar_interval = 10 Abundance_win_flag = .true. Abundance_win_width = 12 Abundance_win_aspect_ratio = 0.75 Abundance_txt_scale = 1.0 Abundance_title = 'make_he_wd' Abundance_num_isos_to_show = 6 Abundance_which_isos_to_show(1) = 'h1' Abundance_which_isos_to_show(2) = 'he3' Abundance_which_isos_to_show(3) = 'he4' Abundance_which_isos_to_show(4) = 'c12' Abundance_which_isos_to_show(5) = 'n14' Abundance_which_isos_to_show(6) = 'o16' num_abundance_line_labels = 4 Abundance_line_txt_scale_factor = 1.0 Abundance_legend_max_cnt = 0 Abundance_xaxis_name = 'mass' Abundance_xaxis_reversed = .false. Abundance_xmin = -101d0 Abundance_xmax = -101d0 Abundance_log_mass_frac_min = -3.0 Abundance_log_mass_frac_max = 0.3 Abundance_file_flag = .true. Abundance_file_dir = 'pgstar_out' Abundance_file_prefix = 'abund_' Abundance_file_interval = 10000 HR_win_flag = .true. HR_win_width = 12 HR_win_aspect_ratio = 1.2 ! aspect_ratio = height/width HR_logT_min = 3.4 HR_logT_max = 4.1 HR_logL_min = -5.0 HR_logL_max = -1 ! file output HR_file_flag = .true. HR_file_dir = 'pgstar_out' HR_file_prefix = 'hr' HR_file_interval = 100 ! output when mod(model_number,HR_file_interval)==0 HR_file_width = 15 ! negative means use same value as for window HR_file_aspect_ratio = -1 ! negative means use same value as for window / ! end of pgstar namelist
Last-Updated: 18Jun2021 (MESA e2acbc2) by fxt.