Z Vul's donor star shows a C/N ratio of 2.14, lacking the deep carbon depletion expected after mass stripping, and the fitted models favor nearly conservative Case A mass transfer.
The IACOB spectroscopic database of Northern Galactic OB stars
1 Pith paper cite this work. Polarity classification is still indexing.
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abstract
We present the IACOB spectroscopic database, an homogeneous set of high quality, high resolution spectra of Galactic O- and B-type stars obtained with the FIES spectrograph attached to the Nordic Optical Telescope. We also present some results from ongoing projects using the IACOB database.
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Unravelling Mass Transfer in Algols from Surface Abundances. I. Z Vulpeculae
Z Vul's donor star shows a C/N ratio of 2.14, lacking the deep carbon depletion expected after mass stripping, and the fitted models favor nearly conservative Case A mass transfer.