Composite Spectra in Young Stars: Accretion or Close Companions?

Details Composite Spectra in Young Stars: Accretion or Close Companions? Composite Spectra in Young Stars: Accretion or Close Companions?

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...440..764k&link_type=abstract

Astrophysical Journal v.440, p.764

Astronomy and Astrophysics

Astronomy

9

Accretion, Accretion Disks, Stars: Binaries: Close, Stars: Pre-Main-Sequence

Scientific paper

Three young low-mass stars which exhibit composite optical spectra were imaged at high angular resolution in the near-infrared to determine whether their spectral peculiarities are due to the presence of close binary companions. Companions to two of the three stars were found to be capable of producing the observed spectra, but only if they are much younger than their primaries. If the inferred age differences are real, they suggest that a mechanism must exist which can perturb the evolution of a young star in a binary system from its Hayashi track.

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