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The rotation and coma profiles of comet C/2004 Q2 (Machholz)
Maarten Reyniers, Pieter Degroote, Dennis Bodewits +2
Aims. Rotation periods of cometary nuclei are scarce, though important when studying the nature and origin of these objects. Our aim is to derive a rotation period for the nucleus…
A Spectroscopic and Photometric Study of the Metal-Poor, Pulsating, Post-AGB Binary HD 46703
Bruce J. Hrivnak, Hans Van Winckel, Maarten Reyniers +3
The metal-poor post-AGB star HD 46703 is shown to be a single-line spectroscopic binary with a period of 600 days, a high velocity of -94 km/s, and an orbital eccentricity of 0.3.…
METIS - the Mid-infrared E-ELT Imager and Spectrograph
Bernhard R. Brandl, Rainer Lenzen, Eric Pantin +19
METIS, the Mid-infrared ELT Imager and Spectrograph (formerly called MIDIR), is a proposed instrument for the European Extremely Large Telescope (E-ELT), currently undergoing a pha…
MWC 297: a young high-mass star rotating at critical velocity
B. Acke, T. Verhoelst, M. E. van den Ancker +9
MWC 297 is a young massive nearby B[e] star. The central star has a large projected rotational velocity of 350 km/s. Despite the wealth of published observations, the nature of thi…
Probing the Early Evolution of Young High-Mass Stars
E. Puga, A. Bik, L. B. M. F. Waters +22
Near-infrared imaging surveys of high-mass star-forming regions reveal an amazingly complex interplay between star formation and the environment (Churchwell et al. 2006; Alvarez et…