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This Is A Custom Widget

This Sliding Bar can be switched on or off in theme options, and can take any widget you throw at it or even fill it with your custom HTML Code. Its perfect for grabbing the attention of your viewers. Choose between 1, 2, 3 or 4 columns, set the background color, widget divider color, activate transparency, a top border or fully disable it on desktop and mobile.

Publications

//Publications

Gamma velorum new stuff!

A long time ago, I published a work on the bright star Gamma Velorum with my colleague and friend O. Chesneau (read the full story following this link). This star is not a weak star. Instead, it is what we call a Wolf-Rayet star, i.e. an extremely hot (70000 degrees celsius) and luminous (one million [...]

By | mars 30th, 2017|News, Publications, Science|Commentaires fermés sur Gamma velorum new stuff!

Outreach papers, press releases

Here are some outreach papers and press releases I have written or contributed to. New astronomy reviews All you ever wanted to know about optical long baseline stellar interferometry, but were too shy to ask your adviser ESO Messenger papers : Catching stellar mergers at work with the VLTI An overview of the MATISSE instrument First [...]

By | janvier 6th, 2017|Enseignement, News, Publications, Science|Commentaires fermés sur Outreach papers, press releases

L’étoile Eta Car dévoilée

Je fais partie d'un article scientifique sur l'étoile Eta Car publié par mon collège Gerd Weigelt. Dans cet article, nous avons résolu le vent proche de l'étoile, dévoilant ainsi la zone de choc avec le compagnon de l'étoile centrale. Source : Image haute résolution d’Eta Carinae - L’interféromètre du VLT détecte l’existence de vents violents au [...]

By | octobre 20th, 2016|News, Publications, Science|Commentaires fermés sur L’étoile Eta Car dévoilée

L’instrument AMBER

L'instrument AMBER du VLTI, c'est ma thèse. Il s'agit d'un des instruments les plus productifs de son domaine Here are a few papers related to AMBER I’ve contributed to. The AMBER instrument  general presentation  optical analysis, in A&A and in SPIE 2004  Differential phases instrument optimization, presented in SPIE 2004  Control software, in SPIE 2004 [...]

By | octobre 9th, 2016|Instruments, Publications, Science|Commentaires fermés sur L’instrument AMBER

A list of optical long-baseline optical/IR interferometry articles with images

Optical/IR stellar long-baseline interferometry (OLBI) has long been considered as a playground for optical engineers rather than a tool for astrophysics. Another frequent say is that OLBI is not useful because it do not produce images. Today, OLBI do produce results far beyond the simple interpretation of few datapoints on a graph (see e.g. Lebouquin et [...]

By | octobre 8th, 2016|Publications, Science|Commentaires fermés sur A list of optical long-baseline optical/IR interferometry articles with images

3D imaging of Phi Persei

I commited again "3D" imaging on visible interferometry data of the Be star Phi Persei After the work on the SgA[e] star HD62623, I updated the self-calibration algorithm to take into account the specificities of the VEGA data. The obtained images are very nice, as they clearly detail the velocity field of the Be star [...]

By | juillet 22nd, 2015|Publications, Science|Commentaires fermés sur 3D imaging of Phi Persei

HD62623

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 and massive star is not expected to host dust in its vicinity. We managed to disentangle the [...]

By | décembre 12th, 2014|Publications, Science|Commentaires fermés sur HD62623

V838 Mon is shrinking !

This paper is part of a series of the two last papers written by my colleague and friend Olivier Chesneau which unfortunately passed away in May 2014. V838 Mon is a famous cool star which suddenly brightened in 2002 in a series of outbursts. It was first thought it was a nova, but the subsequent [...]

By | octobre 14th, 2014|Publications, Science|Commentaires fermés sur V838 Mon is shrinking !

V854 Cen is surrounded by a dusty shell !

This paper is part of a series of the two last papers written by my colleague and friend Olivier Chesneau which unfortunately passed away in May 2014. V854 Cen is an emblematic star of the R Crb spectral type. These stars are helium-rich and occasionally see their light decrease by several magnitudes. It is thought [...]

By | octobre 7th, 2014|Publications, Science|Commentaires fermés sur V854 Cen is surrounded by a dusty shell !

The hyper giant peanut

See also the ESO press release on HR5171A 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 interferometry, far larger than expected with a 1300 solar diameter. We also discovered a companion star, which [...]

By | mars 26th, 2014|Publications, Science|Commentaires fermés sur The hyper giant peanut