... lines

For the Balmer lines, we list the mean radial velocity derived from the central absorption component for 4 lines (H$\beta$, H$\gamma$, H$\delta$ and H$\epsilon$-H$\beta$ and H$\epsilon$ were not observed by ZSW), while for H$\alpha$ the radial velocity derived for the central absorption ($^{\rm ca}$), the red peak ($^{\rm rp}$), and the blue peak ($^{\rm bp}$) are given.

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... ZSW

This value has been derived by hand from the published spectrum because the digital spectra are not available anymore (Zickgraf, private communication).

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