A photometric and spectroscopic study of the binary V1430 Aql |
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| Authors: | C Lázaro MJ Arévalo JM Almenara MI Carnerero MA Moreno |
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| Institution: | a Departamento de Astrofísica, Universidad de La Laguna, E-38205 La Laguna, Tenerife, Spain
b Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain |
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| Abstract: | We present the first infrared light curves of the binary V1430 Aql, in the bands J and K, plus V, R and I light curves and spectra covering the ranges of Hβ, Hα and Ca II-IRT lines. Our VRIJK data, together with published radial velocity curves, are analyzed to determine the orbital and stellar parameters of the system. Both stellar components present spectroscopic evidence of chromospheric activity, with emission excesses in the Hβ, Hα and Ca II-IRT lines. The measured ratio of the lines Hβ/Hα emission excesses can be interpreted as originated in plages. Our light curves also show photometric evidence of cool spots at least on one of the stars. |
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| Keywords: | Binaries: eclipsing Binaries: RS CVns Stars: fundamental parameters Stars: activity Stars: individual: V1430 Aql Photometry: infrared Spectroscopy |
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