Surface imaging of late - type contact binaries II : H α 6563 Å emission in AE Phoenicis and YY Eridani

Abstract

We present and discuss the Hα (λ = 6563Å) observations of the contact (W UMa type) binaries AE Phoenicis and YY Eridani, obtaineded in 1989, 1990 and 1995 with the CAT/CES telescope of the Southern European Observatory (ESO). In particular, we compare the intrinsic equivalent widths of both components with the NextGen theoretical models and the saturation… (More)

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