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Last name: NOELS
First name: A.
Astrophysics and Space Science, 316, pp. 219-229, http://dx.doi.org./10.1007/s10509-008-9803-x
We present ground-based high-resolution high S /N spectra of the slowly pulsating B star HD 147394. Two frequencies are clearly found in the moments of the Si II 4128-4130 doublet: f 1 = 0.8008 c d −1 and f 2 = 0.7813 c d −1. The frequency f 1 is also found in the HIPPARCOS data. A third frequency is also present in our spectroscopic data: f 3...
Communications in Asteroseismology, 158, p. 277 (2009)
Context. The Sun constitutes an excellent laboratory of fundamental physics. With the advent of helioseismology, we were able to probe its internal layers with unprecendented precision and thoroughness. However, the current state of solar modelling is still stained by tedious issues. One of these central problems is related to the disagreement...
We report the discovery of a group of apparently young CoRoT red-giant stars exhibiting enhanced [α/Fe] abundance ratios (as determined from APOGEE spectra) with respect to solar values. Their existence is not explained bystandard chemical evolution models of the Milky Way, and shows that the chemical-enrichment history of the Galactic disc is...
Context. The active star-forming region W33B is a source of OH and H 2 O maser emission located in distinct zones around the central object. Aims. The aim was to obtain the complete Stokes pattern of polarised OH maser emission and to trace its variability and to investigate flares and long-term variability of the H 2 O maser and evolution of...
We introduce the main lines and specificities of the CoRoT Seismology Core Programme. The development and consolidation of this programme has been made in the framework of the CoRoT Seismology Working Group. With a few illustrative examples, we show how CoRoT data will help to address various problems associated with present open questions of...
Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high-resolution chrono-chemo-kinematical maps of the Galaxy. Data from large-scale astrometric and spectroscopic surveys will soon provide us with a well-defined view of the current chemo-kinematical structure of the Milky Way,...