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Radio Flares in HR 1099 (V711 Tau)

Published online by Cambridge University Press:  12 April 2016

G. Umana ,
G. Trigilio ,
G. Leto ,
S. Catalano  and
M. Rodonò
G. Umana
Affiliation:
Istituto di Radioastronomia del C.N.R., C.P. 169 Noto, Italy
G. Trigilio
Affiliation:
Istituto di Radioastronomia del C.N.R., C.P. 169 Noto, Italy
G. Leto
Affiliation:
Istituto di Radioastronomia del C.N.R., C.P. 169 Noto, Italy
S. Catalano
Affiliation:
Osservatorio Astrofisico di Catania, Viale A. Doria 6, 95125 Catania, Italy
M. Rodonò
Affiliation:
Istituto di Astronomia, Università di Catania, Viale A. Doria 6, 95125 Catania, Italy Osservatorio Astrofisico di Catania, Viale A. Doria 6, 95125 Catania, Italy

Extract

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We present the results of the first three years of a single dish radio monitoring of HR 1099 we are carrying out using the the 32m radiotelescope at the Noto VLBI station of the Istituto di Radioastronomia of the Italian Consiglio Nazionale delle Ricerche (C.N.R.).

These data, together with other observations available from literature, constitute a database which shed light on the radio emission from this system.

HR 1099 tends to undergo extended periods of strong activity, interrupted by periods of low flux density level, as can be seen from the radio behaviour on a timescale of several months. The switching between flaring and quiescent periods is not random and, at the moment, it is not possible to associate a characteristic duration to each phase.

Type
Flares in Late-type Stars: Radio and Optical
Information
International Astronomical Union Colloquium , Volume 151: Flares and Flashes , 1995 , pp. 44
Copyright
Copyright © Springer-Verlag 1995