SIMBAD references

1996A&A...310..879B - Astronomy and Astrophysics, volume 310, 879-892 (1996/6-3)

Lithium abundance in binaries of the Hyades open cluster.

BARRADO Y NAVASCUES D. and STAUFFER J.R.

Abstract (from CDS):

We have derived accurate and homogeneous lithium abundances in 49 Main Sequence binary systems belonging to the Hyades open cluster by using a deconvolution method to determine individual magnitudes and colors for the primary and secondary components of the binary. The input parameters of the model are the observed Li equivalent width, the actual distance to the binary, the integrated apparent magnitude and the integrated colors of the binaries -BV(RI)K. We show that the general behavior is the same in binaries and in single stars (Li is depleted faster in K stars than in G stars and there is a deep dip for mid-F stars). However, there is a larger scatter in the abundances of binary systems than in single stars. Moreover, in general, binary systems have an overabundance, which is more conspicuous in close binaries. In fact, there is a cut-off period, which can be estimated as Porb∼9d. This value is in excellent agreement with the theoretical predition of Zahn (1994).

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: binaries: close - stars: late type - open clusters: individual: Hyades

VizieR on-line data: <Available at CDS (J/A+A/310/879): table1 table1.tex>

CDS comments: Table 1: J301 = BD +26 730, J304 = HD 285947, J311 = Cl* Melotte 25 PELS 95

Simbad objects: 51

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2019.11.22-12:21:57

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