Bibcode
Randich, S.; Martin, E.; Garcia Lopez, R.; Pallavicini, R.
Referencia bibliográfica
ASP Conf. Ser. 154, The Tenth Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, Edited by R. A. Donahue and J. A. Bookbinder, p.2136
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1998
Número de citas
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Número de citas referidas
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Descripción
We present the results from a lithium survey of 23 new alpha Persei
candidates discovered by ROSAT. The log N(Li) vs. T_eff distribution of
these stars is compared with that of previously known members: the
distributions for the two samples are in good agreement, although in the
5000-4700 K T_eff range our sample stars are located on the upper
envelope of previously known members. We think that this is most likely
due to the X-ray selection bias in our sample. This temperature range is
indeed where the rotation-Li connection is most clear. The merged
``old'' + ``new'' sample is then compared both with the Pleiades and the
IC 2602 and IC 4665 clusters. alpha Per stars shows a spread in lithium,
but such a spread starts to be seen at a lower effective temperature
than in the Pleiades. A speculative explanation, connecting the
dispersion in lithium to a spread in the timescale for disk dissipation,
is given.