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    • Bertelsen, R.; Kamp, I.; Van der Plas, Gerrit; Van der Ancker, M. E.; Waters, L. B. F. M.; Thi, W. F.; Woitke, P. (EDP Sciences, 2016)
      Aims. The CO ro-vibrational lines observed from Herbig group II discs are often seen to be broad, while the same lines observed from group I discs are often narrow. This difference is not well understood. In this paper we ...
    • Hein Bertelsen, Rosina P.; Kamp, I.; Van der Plas, Gerrit; Van den Ancker, M. E.; Waters, L. B. F. M.; Thi, W.-F.; Woitke, P. (Oxford Univ Press, 2016)
      We present for the first time a direct comparison of multi-epoch (2001-2002 and 2012) CO ro-vibrational emission lines from HD 163296. We find that both the line shapes and the FWHM (full width at half-maximum) differ ...