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Browsing by Author "Thevenin, F"

Browsing by Author "Thevenin, F"

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  • Comparative modelling of the spectra of cool giants 
    Lebzelter, T; Heiter, U; Abia, C; Eriksson, K; Ireland, M; Neilson, H; Nowotny, W; Maldonado, J; Merle, T; Peterson, R; Plez, B; Short, C. I; Wahlgren, G. M; Worley, C; Aringer, B; Bladh, S; de Laverny, P; Goswami, A; Mora, A; Norris, R. P; Recio-Blanco, A; Scholz, M; Thevenin, F; Tsuji, T; Kordopatis, G; Montesinos, B; Wing, R. F (EDP Sciences, 2012-11)
    Context. Our ability to extract information from the spectra of stars depends on reliable models of stellar atmospheres and appropriate techniques for spectral synthesis. Various model codes and strategies for the analysis ...
  • New determination of abundances and stellar parameters for a set of weak G-band stars 
    Palacios, A; Jasniewicz, G; Masseron, T; Thevenin, F; Itam-Pasquet, J; Parthasarathy, M (EDP Sciences, 2016-03)
    Context. Weak G -band (wGb) stars are a very peculiar class of red giants; th ey are almost devoided of carbon and often present mild lithium enrichment. Desp ite their very puzzling abundance pa tterns, very few ...
  • The puzzling high velocity G5 supergiant star HD 179821: new insight from Gaia DR2 data 
    Parthasarathy, M; Jasniewicz, G; Thevenin, F (Springer, 2019-01)
    HD 179821 is classified as G5 Ia star. From the IRAS colors and spectral energy distributions it was classified as a post-AGB star. But some studies classify it as a massive (30 to 19 M⊙) post-red supergiant evolving to ...
  • Search for Lithium-Rich Stars Among G-K Giants with IR-excess 
    Jasniewicz, G; Parthasarathy, M; de Laverny, P; Thevenin, F; Mauron, N; Chadid, M (International Astronomical Union, 2000)
    We report here new results about a search for Li- rich stars among 52 G-K giant stars which are known to have near IR excess. Eleven giants have been found to have loge (Li)≥ 1.0. Five are new Li-rich stars. We suspect ...

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