Snapshots ouputs

Here, we provide a summary of the quantities written in the snapshots, in addition to positions, velocities, masses and particle IDs.

Sink particles

Name	Description	Units	Comments
`NumberOfSinkSwallows`	Number of sink merger events	[-]
`NumberOfGasSwallows`	Number of gas swallowed	[-]
`TargetMass`	Sink target mass to spawn the next star particle	[U_M]	You can use it to determine if the target mass is so huge that the sink’s mass cannot spawn such a star. Such rare behaviour may bias the IMF towards high masses.
`Nstars`	Number of stars created by the the sink particles	[-]
`SwallowedAngularMomentum`	Total angular momentum swallowed by the sink particles	[U_M U_L ^2 U_T ^-1]
`MetalMassFractions`	Mass fraction of each metal element	[-]	Array of length `N` for each particles. The number of elements `N` is determined at compile time by `--with-chemistry=GEAR_N`.

Name	Description	Units	Comments
`BirthScaleFactors`	Scale-factors when the stars were born	[-]	Only used in cosmological runs.
`BirthTimes`	Time when the stars were born	[U_T]	Only used in non-cosmological runs.
`BirthMasses`	Masses of the stars at brith time	[U_M]
`ProgenitorIDs`	ID of the progenitor sinks	[-]
`StellarParticleType`	Type of the stellar particle: 0: (discrete) single star 1: continuous IMF part star 2: single population star	[-]	The last type correspond to star particles in the previous model, i.e. representing the full IMF