Fig. 7
[Sr/Ba] as a function of [Fe/H] and [Ba/H]. The Sextans stars measured in this study are shown by diamonds with error bars; open diamonds are our target stars observed by Subaru HDS while filled diamonds are re-analyzed stars taken from the VLT archive. Blue symbols show 98 halo RGB stars that have similar metallicity (− 3.22 < [Fe/H] < − 2.65) and [Ba/Fe] (− 1.95 < [Ba/Fe] < − 0.77) to the five stars. Right panel: histogram of [Sr/Ba] for the 98 halo stars. The range of the ratio (0.2 < [Sr/Ba] < 0.6) is shaded in blue, in which we see clumping of [Sr/Ba] with our five Sextans dwarf galaxy stars.
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