Bibcode
García-Alvarez, D.; Kővári, Zs.; Vida, K.; Kriskovics , L.; Oláh, K.
Bibliographical reference
Astronomische Nachrichten, Vol.334, Issue 9, p.976
Advertised on:
11
2013
Citations
3
Refereed citations
3
Description
We introduce an iterative spectral disentangling technique combined with
Doppler imaging in order to recover surface temperature maps for both
components of double-lined active binary systems. Our method provides an
opportunity to separate spectra of the active components while
minimizing the unwanted disturbances on the given line profile from the
other component. The efficiency of the method is demonstrated on real
data of the double-lined RS CVn-type binary V824 Ara. The resulting
Doppler images reveal cool spots on the polar regions as well as
low-latitude features on both of the stars. Moreover, both components
have hot spots, that are facing each other. This may indicate
interconnection between the stellar magnetic fields.
Related projects
Chemical Abundances in Stars
Stellar spectroscopy allows us to determine the properties and chemical compositions of stars. From this information for stars of different ages in the Milky Way, it is possible to reconstruct the chemical evolution of the Galaxy, as well as the origin of the elements heavier than boron, created mainly in stellar interiors. It is also possible to
Carlos
Allende Prieto