Asteroseismic Signatures of Stellar Merger Simulations with MESA

Nicholas Z. Rui and collaborators provide simulation data and run files from the 2021 paper 'Asteroseismic Fingerprints of Stellar Mergers'. The dataset includes inlists, history files, and profile data generated using the Modules for Experiments in Stellar Astrophysics (MESA) version r12778. It contains models for single stars and various stellar merger scenarios, such as red giant plus main sequence and main sequence plus main sequence mergers.

Use Cases

• Training or validating models for asteroseismic signatures based on simulated stellar merger profiles.
• Comparing different stellar merger scenarios (e.g., red giant + main sequence vs. main sequence + main sequence) using the provided simulation outputs.
• Reproducing or extending the analysis of merger timing effects using the 'time' subdirectory models.
• Studying post-helium flash evolution in the red clump phase using the 'clump' subdirectory data.

Strengths

• Includes modified run_star_extras.f file for modeling stellar mergers, as detailed in the associated paper's appendix.
• Data is organized into specific subdirectories (e.g., single, rg+ms, ms+ms) corresponding to distinct merger scenarios discussed in the paper.
• Profile data files are captured at specific stellar states, such as at 60 solar luminosities or after the helium flash.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Nicholas Z. Rui, California Institute of Technology

Collection Method

Simulations generated using Modules for Experiments in Stellar Astrophysics (MESA) version r12778.