Close-up of primary and secondary asteroseismic CoRoT targets and the ground-based follow-up observations

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dc.creatorUytterhoeven, K.
dc.creatorPoretti, E.
dc.creatorRainer, M.
dc.creatorMantegazza, L.
dc.creatorZima, W.
dc.creatorAerts, C.
dc.creatorMorel, T.
dc.creatorMiglio, A.
dc.creatorLefever, K.
dc.creatorAmado, P. J.
dc.creatorMartin-Ruiz, S.
dc.creatorMathias, P.
dc.creatorValtier, J. C.
dc.creatorPaparo, M.
dc.creatorBenko, J. M.
dc.creatorCoRoT/SWG, the
dc.date2007-10-22
dc.date2008-11-10
dc.date.accessioned2026-07-07T11:53:43Z
dc.date.available2026-07-07T11:53:43Z
dc.descriptionTo optimise the science results of the asteroseismic part of the CoRoT satellite mission a complementary simultaneous ground-based observational campaign is organised for selected CoRoT targets. The observations include both high-resolution spectroscopic and multi-colour photometric data. We present the preliminary results of the analysis of the ground-based observations of three targets. A line-profile analysis of 216 high-resolution FEROS spectra of the delta Sct star HD 50844 reveals more than ten pulsation frequencies in the frequency range 5-18 c/d, including possibly one radial fundamental mode (6.92 c/d). Based on more than 600 multi-colour photometric datapoints of the beta Cep star HD180642, spanning about three years and obtained with different telescopes and different instruments, we confirm the presence of a dominant radial mode nu1=5.48695 c/d, and detect also its first two harmonics. We find evidence for a second mode nu2=0.3017 c/d, possibly a g-mode, and indications for two more frequencies in the 7-8 c/d domain. From Stromgren photometry we find evidence for the hybrid delta Sct/gamma Dor character of the F0 star HD 44195, as frequencies near 3 c/d and 21 c/d are detected simultaneously in the different filters.
dc.description7 pages, 6 figures, HELAS II International Conference "Helioseismology, Asteroseismology and MHD Connections", 2008, J.Phys.: Conf. Ser. 118, 012077
dc.identifierhttps://arxiv.org/abs/0710.4068
dc.identifierhttp://arxiv.org/abs/0710.4068
dc.identifierJ.Phys.Conf.Ser.118:012077,2008
dc.identifierdoi:10.1088/1742-6596/118/1/012077
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204643
dc.subjectAstrophysics
dc.titleClose-up of primary and secondary asteroseismic CoRoT targets and the ground-based follow-up observations
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