The Astrophysical Journal · 1978 · 23 citations · 0 references
Natural SciencesAstronomyPhysicsAstrochemistryAstrophysicsStellar AstronomyMain-sequence StarsStellar EvolutionStellar StructureChemical Composition DiagnosticsChemical Composition LimitsHertzsprung - Russell DiagramHertzsprung-russell DiagramM Dwarf StarsStellar Evolution ObservationsSubdwarf Stars
Measurements of CaH and TiO band strengths are presented for M dwarfs of the old disk population which lie below the main sequence. Their band strengths imply a composition intermediate between that of halo subdwarfs and that of disk dwarfs.