OpenUCT :: Browsing by Author "Höfner, S"

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Open Access
Aperture synthesis imaging of the carbon AGB star R Sculptoris: Detection of a complex structure and a dominating spot on the stellar disk
(2017) Wittkowski, M; Hofmann, K-H; Höfner, S; Le Bouquin, J B; Nowotny, W; Paladini, C; Young, J; Berger, J-P; Brunner, M; de Gregorio-Monsalvo, I; Eriksson, K; Hron, J; Humphreys, E M L; Lindqvist, M; Maercker, M; Mohamed, S; Olofsson, H; Ramstedt, S; Weigelt, G
Aims. We present near-infrared interferometry of the carbon-rich asymptotic giant branch (AGB) star R Sculptoris (R Scl).
Open Access
Near-infrared spectro-interferometry of Mira variables and comparisons to 1D dynamic model atmospheres and 3D convection simulations
(2016) Wittkowski, M; Chiavassa, A; Freytag, B; Scholz, M; Höfner, S; Karovicova, I; Whitelock, P A
Aims. We aim at comparing spectro-interferometric observations of Mira variable asymptotic giant branch (AGB) stars with the latest 1D dynamic model atmospheres based on self-excited pulsation models (CODEX models) and with 3D dynamic model atmospheres including pulsation and convection (CO5BOLD models) to better understand the processes that extend the molecular atmosphere to radii where dust can form.