This document presents our very first results on a part of the program: "A study of the Be phenomenon in young open Galactic and Magellanic clusters". It concerns the B stars population in the LMC NGC2004 cluster and its surrounding field observed with the VLT/FLAMES instrumentation with the GIRAFFE spectrograph, at low resolution, in MEDUSA...
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2004 (v1)Conference paperUploaded on: December 3, 2022
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September 13, 2005 (v1)PublicationA study of the B and Be star population in the field of the LMC open cluster NGC2004 with VLT-FLAMES
Observations of hot stars belonging to the young cluster LMC-NGC2004 and its surrounding region have been obtained with the VLT-GIRAFFE facilities in MEDUSA mode. 25 Be stars were discovered; the proportion of Be stars compared to B-type stars is found to be of the same order in the LMC and in the Galaxy fields. 23 hot stars were discovered as...
Uploaded on: December 3, 2022 -
May 31, 2009 (v1)Conference paper
We present different aspects of the ground-based observational counterpart of the CoRoT satellite mission. We give an overview of the selected asteroseismic targets, the numerous instruments and observatories involved, and the first scientific results.
Uploaded on: December 3, 2022 -
2010 (v1)Journal articleCoRoT photometry and high-resolution spectroscopy of the interacting eclipsing binary AU Monocerotis
Analyses of very accurate CoRoT space photometry, past Johnson V photoelectric photometry and high-resolution echelle spectra led to the determination of improved and consistent fundamental stellar properties of both components of AU Monocerotis. We derived new, accurate ephemerides for both the orbital motion (with a period of ) and the...
Uploaded on: December 3, 2022 -
September 25, 2008 (v1)Publication
The Gaia satellite will be launched at the end of 2011. It will observe at least 1 billion stars, and among them several million emission line stars and hot stars. Gaia will provide parallaxes for each star and spectra for stars till V magnitude equal to 17. After a general description of Gaia, we present the codes and methods, which are...
Uploaded on: December 4, 2022 -
July 2019 (v1)Journal article
Context. Exoplanet properties crucially depend on the parameters of their host stars: more accurate stellar parameters yield more accurate exoplanet characteristics. When the exoplanet host star shows pulsations, asteroseismology can be used for an improved description of the stellar parameters. Aims: We aim to revisit the pulsational...
Uploaded on: December 3, 2022