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Martínez Arnáiz, R. ; Maldonado, J. ; Montes Gutiérrez, David ; Eiroa, C. ; Montesinos, B. | EDP Sciencies | 2010-09Context. Chromospheric activity produces both photometric and spectroscopic variations that can be mistaken as planets. Large spots crossing the stellar disc can produce planet-like periodic variations in the light curve of a star. These spots c[...]texto impreso
Martínez Arnáiz, R. ; López Santiago, J. ; Crespo Chacón, I. ; Montes Gutiérrez, David | Wiley | 2011-07We present a homogeneous study of chromospheric and coronal flux–flux relationships using a sample of 298 late-type dwarf active stars with spectral types F to M. The chromospheric lines were observed simultaneously in each star to avoid spread [...]texto impreso
Golovin, A. ; Gálvez Ortiz, M. C. ; Hernán Obispo, M. ; Andreev, M. ; Barnes, J. R. ; Montes Gutiérrez, David ; Pavlenko, E. ; Pandey, J. C. ; Martínez Arnáiz, R. ; Medhi, B. J. ; Parihar, P. S. ; Henden, A. ; Sergeev, A. ; Zaitsev, S. V. ; Karpov, N. | Wiley | 2012-03This paper is part of a multiwavelength study aimed at using complementary photometric, polarimetric and spectroscopic data to achieve an understanding of the activity process in late-type stars. Here, we present the study of FR Cnc, a young, ac[...]
