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Life of a Star

How these connect

Protostar and what it relates to. Every line is an evidence-backed relation, and the arrangement is fixed — this address draws this picture, today and next year.

governs — Position along the main sequence, core temperature, dominant fusion cycle and lifetime are all set principally by initial mass.constrained_by — Below roughly 0.07 to 0.09 solar masses, depending on composition, a contracting object never ignites sustained hydrogen fusion and becomes a brown dwarf.derived_from — A protostar is a collapsed and heated core of a molecular cloud, and no other environment is known to produce one.precedes — Contraction ends and the main sequence begins at the moment core fusion supplies the entire radiated luminosity.Initial stellar massInitial stellar massGiant molecular cloudGiant molecular cloudProtostarProtostarMain sequence (core hydrogen burning)Main sequence (core hydro…
4 drawn · 7 reachable and not drawn · positions derived from object ids, never from a simulation
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Every relation drawn, in words4
  1. Initial stellar mass · governs · Main sequence (core hydrogen burning)

    Position along the main sequence, core temperature, dominant fusion cycle and lifetime are all set principally by initial mass.

  2. Protostar · constrained_by · Initial stellar mass

    Below roughly 0.07 to 0.09 solar masses, depending on composition, a contracting object never ignites sustained hydrogen fusion and becomes a brown dwarf.

  3. Protostar · derived_from · Giant molecular cloud

    A protostar is a collapsed and heated core of a molecular cloud, and no other environment is known to produce one.

  4. Protostar · precedes · Main sequence (core hydrogen burning)

    Contraction ends and the main sequence begins at the moment core fusion supplies the entire radiated luminosity.