Haubois Xavier

Pós-doutorado

Idiomas

Áreas de atuação

Produções bibliográficas

• Chiavassa, A. ; LACOUR, S. ; Millour, F. ; Driebe, T. ; Wittkowski, M. ; Plez, B. ; Thiébaut, E. ; Josselin, E. ; Freytag, B. ; Scholz, M. ; Haubois, X. . VLTI/AMBER spectro-interferometric imaging of VX Sagittarii's inhomogenous outer atmosphere. Astronomy & Astrophysics (Berlin. Print) , v. 511, p. A51, 2010.

• Chiavassa, A. ; Haubois, X. ; Young, J. S. ; Plez, B. ; Josselin, E. ; PERRIN, G. ; Freytag, B. . Radiative hydrodynamics simulations of red supergiant stars. Astronomy & Astrophysics (Berlin. Print) , v. 515, p. A12, 2010.

• Dodds-Eden, K. ; Porquet, D. ; Trap, G. ; Quataert, E. ; Haubois, X. ; GILLESSEN, S. ; Grosso, N. ; Pantin, E. ; Falcke, H. ; Rouan, D. ; GENZEL, R. ; Hasinger, G. ; Goldwurm, A. ; Yusef-Zadeh, F. ; Clenet, Y. ; Trippe, S. ; Lagage, P.-O. ; Bartko, H. ; EISENHAUER, F. ; Ott, T. ; PAUMARD, T. ; PERRIN, G. ; Yuan, F. ; Fritz, T.K. ; Mascetti, L. . EVIDENCE FOR X-RAY SYNCHROTRON EMISSION FROM SIMULTANEOUS MID-INFRARED TO X-RAY OBSERVATIONS OF A STRONG Sgr A* FLARE. The Astrophysical Journal , v. 698, p. 676-692, 2009.

• Haubois, X. ; PERRIN, G. ; LACOUR, S. ; Verhoelst, T. ; Meimon, S. ; Mugnier, L. ; Thiébaut, E. ; Berger, J. P. ; Ridgway, S. T. ; Monnier, J. D. ; Millan-Gabet, R. ; Traub, W. . Imaging the spotty surface of Betelgeuse in the band. Astronomy & Astrophysics (Berlin. Print) , v. 508, p. 923-932, 2009.

• LACOUR, S. ; Thiébaut, E. ; PERRIN, G. ; Meimon, S. ; Haubois, X. ; Pedretti, E. ; Ridgway, S. T. ; Monnier, J. D. ; Berger, J. P. ; Schuller, P. A. ; Woodruff, H. ; Poncelet, A. ; Le Coroller, H. ; Millan-Gabet, R. ; Lacasse, M. ; Traub, W. . THE PULSATION OF ? CYGNI IMAGED BY OPTICAL INTERFEROMETRY: A NOVEL TECHNIQUE TO DERIVE DISTANCE AND MASS OF MIRA STARS. The Astrophysical Journal , v. 707, p. 632-643, 2009.

• Kervella, P. ; Verhoelst, T. ; Ridgway, S. T. ; PERRIN, G. ; LACOUR, S. ; Cami, J. ; Haubois, X. . The close circumstellar environment of Betelgeuse. Astronomy & Astrophysics (Berlin. Print) , v. 504, p. 115-125, 2009.

• Clarke, F. J. ; Hodgkin, S. T. ; Oppenheimer, B. R. ; Robertson, J. ; Haubois, X. . A search for J-band variability from late-L and T brown dwarfs. Monthly Notices of the Royal Astronomical Society , v. 386, p. 2009-2014, 2008.

• LACOUR, S. ; Meimon, S. ; Thiébaut, E. ; PERRIN, G. ; Verhoelst, T. ; Pedretti, E. ; Schuller, P. A. ; Mugnier, L. ; Monnier, J. ; Berger, J. P. ; Haubois, X. ; Poncelet, A. ; Le Besnerais, G. ; Eriksson, K. ; Millan-Gabet, R. ; Ragland, S. ; Lacasse, M. ; Traub, W. . The limb-darkened Arcturus: imaging with the IOTA/IONIC interferometer. Astronomy & Astrophysics (Berlin) , v. 485, p. 561-570, 2008.

• Ivanov, Valentin D. ; Chauvin, G. ; Foellmi, C. ; Hartung, M. ; Huélamo, N. ; Melo, C. ; Nürnberger, D. ; Sterzik, M. ; Haubois, X. . Common Proper Motion Search for Faint Companions Around Early-Type Field Stars Progress Report. Astrophysics and Space Science , v. 304, p. 247-249, 2006.

• Haubois, X. . Zoom sur le trou noir au centre de la Galaxie. Le Monde, p. 17 - 17, 18 out. 2010.

• Haubois, X. ; GENZEL, R. ; PERRIN, G. ; GILLESSEN, S. ; PAUMARD, T. . The Galactic Center large program. In: Second Kolkata Conference on Observational Evidence for Black Holes in the Universe, 2008, Kolkata. OBSERVATIONAL EVIDENCE FOR BLACK HOLES IN THE UNIVERSE: Proceedings of the 2nd Kolkata Conference on Observational Evidence for Black Holes in the Universe held in Kolkata India. Kolkata: AIP Conference Proceedings, 2008. v. 1053. p. 91.

• EISENHAUER, F. PERRIN, G. Straubmeier, C. Brandner, W. Boehm, A. Cassaing, F. Clenet, Y. Dodds-Eden, K. ECKART, A. Fedou, P. Gendron, E. GENZEL, R. GILLESSEN, S. Graeter, A. Gueriau, C. Hamaus, N. Haubois, X. Haug, M. Henning, T. Hippler, S. Hofmann, R. Hormuth, F. Houairi, K. Kellner, S. Kervella, P. , et al. Klein, R. Kolmeder, J. Laun, W. LENA, P. Lenzen, R. Marteaud, M. Meschke, D. Naranjo, V. Neumann, U. PAUMARD, T. Perger, M. Perret, D. RABIEN, S. Ramos, J. R. Reess, J. M. ; GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLTI. In: A Giant Step: from Milli- to Micro-arcsecond Astrometry, 2007. A Giant Step: from Milli- to Micro-arcsecond Astrometry. v. 248. p. 100-101.

• Haubois, X. ; EISENHAUER, F. ; PERRIN, G. ; RABIEN, S. ; ECKART, A. ; LENA, P. ; GENZEL, R. ; Abuter, R. ; PAUMARD, T. ; Brandner, W. . GRAVITY : Probing Space-Time and Faint Objects in the Infrared. In: Visions for Infrared Astronomy, 2006, Paris. Visions for Infrared Astronomy, Instrumentation, Mesure, Métrologie, 2006. Proc. of the Conference held in Paris, March 20-22, 2006.. Paris: Lavoisier, 2006. v. 6. p. 351.

• Haubois, X. ; PERRIN, G. ; LACOUR, S. ; SCHULLER, P. ; Monnier, J. ; Berger, J. P. ; RIDGWAY, S.T. ; Millan-Gabet, R. ; Pedretti, E. ; Traub, W. . Interferometric study of Betelgeuse in H band. In: SF2A, 2006, Paris. SF2A-2006: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Paris: Eds.: D. Barret, 2006. v. 1. p. 471.

• Haubois, X. ; EISENHAUER, F. ; PERRIN, G. ; RABIEN, S. ; ECKART, A. ; LENA, P. ; GENZEL, R. ; Abuter, R. ; PAUMARD, T. ; Brandner, W. . GRAVITY, Probing Space-time And Faint Objects In The Infrared.. In: Astronomical Facilities of the Next Decade, 26th meeting of the IAU, Special Session 1, 16-17 August, 2006 in Prague, Czech Republic, SPS1, #4, 2006, Prague. IAU-Astronomical Facilities of the Next Decade, 2006. v. 1. p. 4.

• Haubois, X. ; PERRIN, G. ; LACOUR, S. ; Verhoelst, T. ; Meimon, S. ; Mugnier, L. ; Thiébaut, E. ; BERGER, J.-P. ; RIDGWAY, S.T. ; MONNIER, J.D. ; Pedretti, E. ; Millan-Gabet, R. ; Traub, W. . A new portrait of Betelgeuse in H band. Astronomy & Astrophysics (Berlin) , 2009.

• Haubois, X. ; Carciofi, A.C. ; BJORKMAN, J. ; Okazaki, T. A. . The Dynamical Evolution of Be star disks. 2010. (Apresentação de Trabalho/Simpósio).

Projetos de pesquisa

• 2009 - Atual

  Dynamics of Be star disks, Descrição: Circumstellar disks of Be stars, that are formed from matter ejected from the central star, are governed by a very rich physics in which viscosity plays an important role and that could have much in common to other objects such as active galactic nuclei (AGNs) and accretion disks around compact objects (e.g. X-ray binaries). Our group have developed state-of-the-art theoretical tools to analyse the dynamical behaviour of a Be disk fed by non-constant decretion rates. They are mainly based on the computer code HDUST, a fully three-dimensional radiative transfer code that has been succesfully applied to studying several Be systems so far. We study models of the temporal evolution of different types of Be star disks for different dynamical scenarios. By showing the behaviour of a large number of observables (interferometry, polarization, photometry and spectral line profiles), we investigate how it is possible to infer from observations the dynamical status of the disk.. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Haubois Xavier - Coordenador / Alex C. Carciofi - Integrante / Atsuo T. Okazaki - Integrante.

• 2005 - 2009

  GRAVITY : Probing Space-Time and Faint Objects in the Infrared, Descrição: We introduce a new infrared adaptive optics assisted multiple-beam instrument for the VLTI infrastructure. GRAVITY (standing for General Relativity Analysis via VLT InterferometrY) will allow simultaneous observations of two objects by phase-referenced interferometric imaging and narrow angle astrometry with a high sensitivity. For those reasons, GRAVITY is particularly suited for observing various types of faint targets of deep interest in the near-infrared such as AGNs, starclusters, intermediate black holes, substellar objects, planets. Precisely, one of the main goal of GRAVITY is to probe space time around the intermediate mass black hole at the center of our galaxy. We will able to detect relativistic effects at a few Schwarzschild radii of the center of the black hole thanks to an astrometric accuracy of 10 micro arcseconds. We will present the instrumental concept of GRAVITY and discuss some of the future scientific prospects that it will offer.. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Haubois Xavier - Coordenador / Guy Perrin - Integrante / Stefan Gillessen - Integrante / Frank Eisenhauer - Integrante / Sebastian Rabien - Integrante / Sylvestre Lacour - Integrante / J.-P. BERGER - Integrante.

• 2005 - 2005

  Multiplicity of early type stars, Descrição: The multiplicity of early-type stars is still not well established. The derived binary fraction is different for individual star forming regions, suggesting a connection with the age and the environment conditions. The few studies that have investigated this connection do not provide conclusive results. To fill in this gap, we started the first detailed adaptive-optic-assisted imaging survey of early-type field stars to derive their multiplicity in a homogeneous way. The sample has been extracted from the Hipparcos Catalog and consists of 341 BA-type stars within 300 pc from the Sun. We report the current status of the survey and describe a Monte-Carlo simulation that estimates the completeness of our companion detection.. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Haubois Xavier - Coordenador / Ivanov Valentin - Integrante / Chauvin, G. - Integrante / Foellmi, C. - Integrante / Hartung, M. - Integrante / Huélamo, N. - Integrante / Nürnberger, D. - Integrante / Sterzik, M. - Integrante.

• 2005 - Atual

  Infrared interferometric imaging of evolved stars, Descrição: Thanks to interferometric observations made at different wavelengths and to spectral modelling, we aim at studying the mass loss phenomenon in Mira stars and in AGB stars.. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Haubois Xavier - Coordenador / Guy Perrin - Integrante / Sylvestre Lacour - Integrante / J.D. Monnier - Integrante / Steve Ridgway - Integrante / Kervella, P. - Integrante / Verhoelst, T. - Integrante.

• 2004 - 2004

  Brown Dwarfs variability, Descrição: We present J-band photometric observations of eight late-L and T type brown dwarfs designed to search for variability. We detect small amplitude periodic variability from three of the objects on time-scales of several hours, probably indicating the rotation period of the objects. The other targets do not show any variability down to the level of 0.5-5 per cent. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Haubois Xavier - Coordenador / Clarke Fraser - Integrante.

• 2004 - Atual

  The Galactic Center large program, Descrição: We report a multi-epoch and multi-wavelength observation campaign of the Galactic Center. Some results are first presented before stressing more specifically the 8.6 micron observations obtained with VLT/VISIR used in burst mode during three nights in July 2007. The high angular resolution provided by this mode allows diffraction limited imaging and gives access to the sharpest details ever achieved in this zone. These observations were carried out simultaneously to a flare coming from Sgr A* area, detected with VLT/NACO. Their analysis further constrains the SED (spectral energy distribution) of the flares and gives indications on the emitting processes of Sgr A*.. , Situação: Em andamento; Natureza: Pesquisa. , Integrantes: Haubois Xavier - Coordenador / Reinhard Genzel - Integrante / Guy Perrin - Integrante / Stefan Gillessen - Integrante / Frank Eisenhauer - Integrante / Dodds-Eden, K. - Integrante.

• 2003 - 2003

  The frequency of Be Stars, Descrição: I performed an analysis on the frequency of Be stars in different spectral classes.. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Haubois Xavier - Coordenador / Zorec, Juan - Integrante.

Prêmios