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Table 1

High-resolution spectra used in our study.

Star Inst. Date texp (s)
RMC 40 UVES 2000-07-09 1 × 600
UVES 2002-05-06 1 × 360
FEROS 2005-12-12* 2 × 450
FEROS 2006-10-11 2 × 1000
FEROS 2007-10-05* 2 × 450
FEROS 2008-08-04 2 × 1800
FEROS 2014-11-28* 2 × 700
FEROS 2015-12-04* 2 × 500
FEROS 2016-11-02* 2 × 500

RMC 110 FEROS 2005-12-12* 2 × 450
FEROS 2007-02-20 7 × 200
FEROS 2014-12-04* 2 × 400
FEROS 2016-01-13* 2 × 700

Notes. The spectra marked with an asterisk were observed by us and the others were obtained from ESO public data archive. The exposure time is associated with the number of spectra obtained.

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