Ages, chemistry, and type 1A supernovae: Clues to the formation of the galactic stellar halo

Details Ages, chemistry, and type 1A supernovae: Clues to the formation of the galactic stellar halo Ages, chemistry, and type 1A supernovae: Clues to the formation of the galactic stellar halo

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..197s&link_type=abstract

In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 199-200 (SEE N93-26706 10-90)

Computer Science

Galactic Halos, Star Formation, Supernovae, White Dwarf Stars, Abundance, Carbon, Chemical Composition, Oxygen

Scientific paper

We endeavor to resolve two conflicting constraints on the duration of the formation of the Galactic stellar halo - 2-3 Gyr age differences in halo stars, and the time scale inferred from the observed constant values of chemical element abundance ratios characteristic of enrichment by Type II supernovae - by investigating the time scale for the onset of Type Ia supernovae (SNIa) in the currently favored progenitor model - mergers of carbon and oxygen white dwarfs (CO WDs).

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