Database containing the simulation data used in 'Dynamical constraints on the S2 (S0-2) star possible companions'

The database contains the output of the N-body code TidyMESS (Boekholt & Correia, 2023) for simulations of S2-companion systems interacting with Sgr A*, the supermassive black hole at the center of the Galaxy. The dataset is provided as a single table encompassing all integration outputs produced by TidyMESS, optimized for use with SQL engines (e.g., PostgreSQL, MySQL) or Python-based equivalents such as SQLAlchemy.

Each row of the table corresponds to single simulation time-step of a given binary + Sgr A* system. The table columns are:

1. the identifier of the binary system (ID);
2. the simulation time (Time (yr));
3. the inertial position and velocity vectors of the SMBH (e.g., Inertial x-position BH (AU), Inertial x-velocity BH (AU/yr), etc.);
4. the inertial position and velocity vectors of the primary component (e.g., Inertial x-position primary (AU), Inertial x-velocity primary (AU/yr), etc.);
5. the inertial position and velocity vectors of the secondary component (e.g., Inertial x-position secondary (AU), Inertial x-velocity secondary (AU/yr), etc.);
6. the binary orbital parameters (Orbital period binary (day), Eccentricity, Cosine Mutual Inclination, and Mass ratio).

Using an SQL engine, users can retrieve specific systems, time intervals, or orbital quantities. For example, the first 10 time-steps of the integration for Binary 1 can be obtained with:

SELECT * FROM simulation
WHERE "ID" = 'Binary 1'
ORDER BY time_step ASC
LIMIT 10; 

The N-body code TidyMESS, together with this dataset, also allows users to extend the dynamical evolution of any system. Surviving binaries can be evolved beyond the final simulation time used in the paper ('Dynamical constraints on the S2 (S0-2) star possible companions')  by setting the flag to_continue = 1 and adjusting t_end in the TidyMESS parameters file. In the case of merged or disrupted binaries, this flag may likewise be enabled to continue the evolution of the merged remnant or unbound components.