What's newΒΆ

Following is an brief list of important updates to the COMPAS code. A complete record of changes can be found in the file changelog.h.


02.34.01 Dec 7, 2022

  • Fixed Time<MT in BSE_RLOF, which previously was identical with Time>MT.

02.33.00 Aug 28, 2022

  • Added simplified (constant per stellar type) critical mass ratios from Claeys+ 2014 for determining if MT is unstable

02.32.00 Aug 27, 2022

  • Added 'record type' functionality to all standard log files. Note: This changes default behaviour: only Detailed Output log files affected in this release

  • Added/rationalised Detailed Output records printed for binary systems

  • Added new program option for each standard log file to allow specification of which record types to print. See e.g. '--logfile-detailed-output-record-types'

  • Changed case on column header strings for switch log files (SSE and BSE. SWITCHING_FROM, SWITCHING_TO, and STAR_SWITCHING are now Switching_From, Switching_To, and Star_Switching respectively). Note: This could affect post-processig code that consumes the switch log files - users should check that their code will recognise the new header strings.

  • Added new section to online documentation: 'What's new'

02.31.10 Aug 12, 2022

  • Added option to set the Temperature boundary between convective/radiative giant envelopes

02.31.09 Aug 9, 2022

  • Max evolution time and max number of timesteps now read in from gridline as well as commandline

02.31.08 Aug 3, 2022

  • Added Accretion Induced Collapse (AIC) of ONeWD as another type of SN

02.31.07 Aug 1, 2022

02.31.06 Aug 2, 2022

  • Added stellar merger to default BSE_RLOF output

02.31.05 July 25, 2022

  • Renamed program option --allow-H-rich-ECSN to allow-non-stripped-ECSN

  • Fixed check for non-interacting ECSN progenitors to consider MT history instead of H-richness

02.31.04 Jun 10, 2022

  • Changed MT_TRACKER values to be clearer and complementary to each other

  • Updated the relevant section in the detailed plotter that uses MT_TRACKER values

  • Removed end states from detailed plotter (Merger, DCO, Unbound) so that they don't over compress the rest

02.31.03 May 20, 2022

  • Fixed MS+MS unstable MT not getting flagged as a CEE

02.31.00 May 14, 2022

  • Added new program option --retain-core-mass-during-caseA-mass-transfer to preserve a larger donor core mass following case A MT, set equal to the expected core mass of a newly formed HG star with mass equal to that of the donor, scaled by the fraction of its MS lifetime

02.30.00 May 8, 2022

  • Added MACLEOD_LINEAR specific angular momentum gamma loss prescription for stable mass transfer (see --mass-transfer-angular-momentum-loss-prescription)

02.29.00 May 5, 2022

  • Added new program option to allow for H-rich ECSN (--allow-H-rich-ECSN, defaults to FALSE). When the option is TRUE, non-interacting ECSN progenitors do not contribute to the single pulsar population. Addresses issue https://github.com/TeamCOMPAS/COMPAS/issues/596

02.28.00 May 11, 2022

  • Added new remnant mass prescription: Fryer+ 2022

  • Added new program options --fryer-22-fmix and --fryer-22-mcrit

02.27.09 Apr 25, 2022

  • Added new program option --muller-mandel-sigma-kick

02.27.08 Apr 12, 2022

02.27.07 Apr 5, 2022

02.27.06 Apr 5, 2022

  • Fixed StarTrack PPISN prescription: previously it was doing the same thing as the COMPAS PPISN prescription

02.27.05 Feb 17, 2022

  • Added new program option --hmxr-binaries, which tells COMPAS to store high-mass x-ray binaries in BSE_RLOF output file

  • Added columns for pre- and post-timestep ratio of stars to Roche Lobe radius to BSE_RLOF output file (addressing issue https://github.com/TeamCOMPAS/COMPAS/issues/746)

02.27.04 Feb 15, 2022

02.27.03 Feb 8, 2022

v02.27.02 Feb 3, 2022

v02.27.01 Feb 3, 2022

  • Fixed condition for envelope type when using ENVELOPE_STATE_PRESCRIPTION::FIXED_TEMPERATURE (previously, almost all envelopes were incorrectly declared radiative)

v02.27.00 Jan 12, 2022

  • Added enhanced Nanjing lambda option that continuously extrapolates beyond radial range

  • Added Nanjing lambda option to switch between calculation using rejuvenated mass and true birth mass

  • Added Nanjing lambda mass and metallicity interpolation options

  • No change in default behaviour