Aims. We demonstrate that reliable photometric distances of stellar clusters, and more generally of stars, can be obtained using pseudomagnitudes and rough spectral type without having to correct for visual absorption.Methods. We determine the mean absolute pseudomagnitude of all spectral (sub)types between B and K. Distances are computed from...
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November 2018 (v1)Journal articleUploaded on: December 4, 2022
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2004 (v1)Conference paper
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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2011 (v1)Journal article
International audience
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2012 (v1)Journal article
International audience
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2013 (v1)Journal article
Aims: We present aperture-synthesis imaging of the red supergiant Antares (α Sco) in the CO first overtone lines. Our goal is to probe the structure and dynamics of the outer atmosphere. Methods: Antares was observed between 2.28 μm and 2.31 μm with VLTI/AMBER with spectral resolutions of up to 12 000 and angular resolutions as high as 7.2 mas...
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July 3, 2006 (v1)Publication
In long baseline interferometry, the raw fringe contrast must be calibrated to obtain the true visibility and then those observables that can be interpreted in terms of astrophysical parameters. The selection of suitable calibration stars is crucial for obtaining the ultimate precision of interferometric instruments like the VLTI. We have...
Uploaded on: December 3, 2022 -
2011 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
2014 (v1)Journal article
Context. As previously demonstrated on Achernar, one can derive the angular radius, rotational velocity, axis tilt, and orientation of a fast-rotating star from the differential phases obtained by spectrally resolved long baseline interferometry using earth-rotation synthesis. Aims: We applied this method on a small sample of stars for...
Uploaded on: December 3, 2022 -
2020 (v1)Journal article
Context. Surface brightness–colour relations (SBCRs) are used to derive the stellar angular diameters from photometric observations. They have various astrophysical applications, such as the distance determination of eclipsing binaries or the determination of exoplanet parameters. However, strong discrepancies between the SBCRs still exist in...
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September 2020 (v1)Journal article
No abstract available
Uploaded on: December 4, 2022 -
May 2020 (v1)Publication
Photometric and interferometric parameters of 534 late-type stars and the associated references. The stars are separated into four tables, according to their spectral type and luminosity class, leading to F5/K7-II/III, F5/K7-IV/V, M-II/III and M-IV/V samples. Interferometric measurements are taken from the JMMC Measured Diameters Catalog (JMDC,...
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2003 (v1)Conference paper
Interferometry for Optical Astronomy II, SPIE Conference 4838, pp. 144-151 (2003)
Uploaded on: December 3, 2022