Surface imaging of late-type contact binaries II: Halpha 6563 A emission in AE Phoenicis and YY Eridani

O. Vilhu, C. Maceroni

We present and discuss the Halpha (6563 A) observations of the contact (W UMa type) binaries AE Phoenicis and YY Eridani, obtaineded in 1989, 1990 and 1995 with the CAT/CES telesco…