Mass loss and a possible Population II lithium dip

Details Mass loss and a possible Population II lithium dip Mass loss and a possible Population II lithium dip

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...394l..61d&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 394, no. 2, Aug. 1, 1992, p. L61-L64.

Astronomy and Astrophysics

Astrophysics

11

Lithium, Main Sequence Stars, Stellar Mass Ejection, Abundance, Globular Clusters, Stellar Evolution, Stellar Temperature

Scientific paper

It is shown that the recent observation of a subplateau lithium abundance for a high-surface-temperature Population II star relative to the Population II lithium plateau can be explained by main-sequence mass loss. This explanation is identical to a previously proposed explanation for the Population I lithium dip and predicts a similar dip for Population II. It is assumed that the main-sequence mass loss in both cases is associated with the instability strip intersecting the main sequence. This mass-loss process can also decrease globular cluster ages by about 1 Gyr.

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