Towards an Understanding of the λ4000Å Break Behaviour in Old Stellar Populations

Details Towards an Understanding of the λ4000Å Break Behaviour in Old Stellar Populations Towards an Understanding of the λ4000Å Break Behaviour in Old Stellar Populations

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ap%26ss.263..167g&link_type=abstract

Astrophysics and Space Science, v. 263, Issue 1/4, p. 167-170 (1998).

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present new empirical fitting functions describing the behaviour of the discontinuity at λ4000 Å in terms of the stellar atmospheric parameters: effective temperature, metallicity and surface gravity. These calibrations can be easily incorporated into stellar population models, providing, for the first time, accurate predictions of the break amplitud for, relatively old, composite systems.

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