INVESTIGADORES
MAUAS Pablo Jacobo David
artículos
Título:
The active RS CVn-type system SZ Pictoris
Autor/es:
MARTINEZ, C I; GONZÁLEZ, J.F.; BUCCINO, A P; IBAÑEZ BUSTOS, R.; MAUAS, P. J. D.
Revista:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2019
ISSN:
0035-8711
Resumen:
We study the short and long-term variability of the spectroscopic binary SZ Pictoris, a southern RS CVn-type system. We used mid-resolution echelle spectra obtained at CASLEO spanning 18 years, and photometric data from the ASAS database V-band and from the Optical Robotic Observatory (BVRI-bands) for similar time lapses. We separated the composite spectra into those corresponding to both components, and we were able to determine accurate orbital parameters, in particular an orbital period of 4.95 days. We also observed a photometric modulation with half the orbital period, due to the ellipticity of the stars. We also found cyclic activity with a period of ~ 2030 days, both in the photometry and in the Ca II flux of the secondary star of the system.
