MALBET , F.

Context. Classical Be stars are hot non-supergiant stars surrounded by a gaseous circumstellar disk that is responsible for the observed infrared (IR) excess and emission lines. The influence of binarity on these phenomena remains controversial.Aims. We followed the evolution of the environment surrounding the binary Be star δ Scorpii one year...

Astrophysics and Space Science, v. 286, n. 1-2, p. 291-296, 2003. http://dx.doi.org/10.1023/A:1026193924949

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Advances in Stellar Interferometry, eds. J. D. Monnier, M. Schoeller and W. C. Danchi, SPIE 6268, p. 626802 (2006)

Advances in Stellar Interferometry, eds. J. D. Monnier, M. Schoeller and W. C. Danchi, SPIE 6268, p. 626802 (2006)

We present here the general formalism and data processing steps used in the data reduction pipeline of the AMBER instrument. AMBER is a three-telescope interferometric beam combiner in J, H and K bands installed at ESO\'s Very Large Telescope Interferometer. The fringes obtained on the 3 pairs of telescopes are spatially coded and spectrally...

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The Messenger, 127, p. 37 (2007)

Astron. & Astrophys., 464, pp. 59-71 (2007)

Context. The putative tori surrounding the accretion disks of active galactic nuclei (AGNs) play a fundamental role in the unification scheme of AGNs. Infrared long-baseline interferometry allows us to study the inner dust distribution in AGNs with unprecedented spatial resolution over a wide infrared wavelength range. Aims: Near- and...

Interferometry for Optical Astronomy II, SPIE Conference 4838, pp. 144-151 (2003)

Astron. & Astrophys., 464, pp. 81-86 (2007)

Astron. & Astrophys., 464, pp. 81-86 (2006)

Aims.We report on spectrally dispersed interferometric AMBER/VLTI observations of the recurrent nova RS Oph five days after the discovery of its outburst on 2006 Feb. 12. Methods: Using three baselines ranging from 44 to 86 m, and a spectral resolution of λ/δλ=1500, we measured the extension of the milliarcsecond-scale emission in the K band...

The sharpest images on Paranal are produced by the beam-combining instruments of the Very Large Telescope Interferometer (VLTI). Currently, the VLTI is close to completing a transitional period, moving away from the first generation of instruments (AMBER, MIDI) and offering new instruments and subsystems to the community. In this article, we...

We present the first high spatial and spectral observations of the circumstellar envelope (CSE) of a B[e] supergiant (CPD$-57 2874$), performed with the Very Large Telescope Interferometer (VLTI). Spectra, visibilities, and closure phase, were obtained using the beam-combiner instruments AMBER (near-IR interferometry with three 8.3 m Unit...

We present new long-baseline spectro-interferometric observations of the HerbigAe star HD163296 obtained in the H and K bands with the AMBER instrument at VLTI. The observations cover a range of spatial resolutions between 3 and 12 milli-arcseconds, with a spectral resolution of ~30. With a total of 1481 visibilities and 432 closure phases,...

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Protostars and Planets V, LPI Contribution 1286, p. 8395 (2005)

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Our Solar System was formed from a cloud of gas and dust. Most of the dust mass is contained in amorphous silicates1, yet crystalline silicates are abundant throughout the Solar System, reflecting the thermal and chemical alteration of solids during planet formation. (Even primitive bodies such as comets contain crystalline silicates2.) Little...

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