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[Observatoire de la Côte d’Azur] Astrophysics
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Astrophysics

My astrophysics work focuses mainly mainly on massive stars.

These stars are among the strangest celestial bodies: nobody knows how they form (although recent works start to raise the blanket), they evolve fast (few million years) and end in a supernova blast. Here, you will find some information on my research work on massive stars.

 
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mercredi 26 mars 2014
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The hyper giant "Peanut"
HR5171 A is a yellow hypergiant star, which was not well studied in the past. In that work, we measured the angular diameter of the star by means of optical long-baseline (...) lire la suite de l'article
jeudi 13 mars 2014
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HD 62623 imaging
HD 62623 is a hot, massive star of spectral type A (i.e. with a temperature around 10 000 Kelvin). It is one of the few stars of its kind which hosts dust in its environment. Such a hot (...) lire la suite de l'article
jeudi 23 décembre 2010
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WR 118
Among Wolf-Rayet stars, few of them have very peculiar properties : though Wolf-Rayet stars are among the hottest and brightest stars, most of the the sub-types WC8 and WC9 stars (...) lire la suite de l'article
mercredi 7 mars 2012
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HD87643
HD 87643 is a member of a very enigmatic class of stellar objects, the so-called class of "stars with the B[e] phenomenon". This B[e] phenomenon is a conjuction of a (...) lire la suite de l'article
mercredi 7 mars 2012
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Gamma² Velorum
Gamma² Velorum is one of the brightest stars in the southern skies. With a Hipparcos-measured distance of 258 pc, it is also the closest Wolf-Rayet star to our solar system, making it a (...) lire la suite de l'article