4 papers
Coherent radio emission from the magnetic chemically peculiar star CU Virginis
C. Trigilio, P. Leto, F. Leone +2
Radio observations of the magnetic chemically peculiar star CU Vir, carried out with the VLA in three different days, show that the radio emission at 20 cm is characterized by a st…
Resolving the radio nebula around beta Lyrae
G. Umana, P. F. L. Maxted, C. Trigilio +3
In this paper we present high spatial resolution radio images of the puzzling binary system beta Lyrae obtained with MERLIN at 5 GHz. We find a nebula surrounding the binary with a…
On the near infrared variability of chemically peculiar stars
F. A. Catalano, F. Leone
Some CP stars have recently been discovered by Catalano et al. (1991) to be variable also in the near infrared, although with smaller amplitudes than in the visible. Hence an obser…
Helium in Chemically Peculiar Stars
F. Leone
For the purpose of deriving the helium abundances in chemically peculiar stars, the importance of assuming a correct helium abundance has been investigated for determining the effe…