Bibcode
García-Alvarez, D.; Barnes, J. R.; Collier Cameron, A.; Doyle, J. G.; Messina, S.; Lanza, A. F.; Rodonò, M.
Referencia bibliográfica
Astronomy and Astrophysics, v.402, p.1073-1083 (2003)
Fecha de publicación:
5
2003
Revista
Número de citas
17
Número de citas referidas
13
Descripción
We present Doppler Images of the RS CVn binary system HR 1099 (V711 Tau)
from spectra taken in two different sites, KPNO and MSO, during the
MUSICOS 1998 campaign. Contemporaneous APT photometry is used to
constrain the Doppler Images. The resulting maximum entropy
reconstructions based on the least-squares deconvolved profiles, derived
from ~ 2000 photospheric absorption lines, reveal the presence of
starspots at medium-high latitudes. We have obtained maps for both
components of the binary system for the first time. The predominant
structure in the primary component is an off-centered polar spot,
confirming previous works on the same target by using independent codes.
The result is verified by using both data sets independently. The lower
spectral resolution data set gives a less detailed map for the MSO data
set. The images obtained for the secondary component show a low latitude
spot around orbital phase 0.7. This spot seems to mirror the structure
seen on the primary. It might suggest that tidal forces may influence
the spot distribution on this binary system.
Based on observations obtained during the MUSICOS 98 MUlti-SIte
COntinuous Spectroscopic campaign from Kitt Peak National Observatory,
USA, and Mt. Stromlo Observatory, Australia.