Zobrazeno 1 - 10
of 75
pro vyhledávání: '"LeBouquin, J. B."'
Autor:
Reggiani, M., Rainot, A., Sana, H., Almeida, L. A., Caballero-Nieves, S., Kratter, K., Lacour, S., LeBouquin, J. -B., Zinnecker, H.
Publikováno v:
A&A 660, A122 (2022)
Almost all massive stars are part of a binary system. Given the wide range of separations at which these companions are found, several observational techniques have been adopted to characterize them, but contrasts greater than 4 in the H-band have ne
Externí odkaz:
http://arxiv.org/abs/2112.10831
Autor:
Anderson, R. I., Mérand, A., Kervella, P., Breitfelder, J., LeBouquin, J. -B., Eyer, L., Gallenne, A., Palaversa, L., Semaan, T., Saesen, S., Mowlavi, N.
Baade-Wesselink-type (BW) techniques enable geometric distance measurements of Cepheid variable stars in the Galaxy and the Magellanic clouds. The leading uncertainties involved concern projection factors required to translate observed radial velocit
Externí odkaz:
http://arxiv.org/abs/1511.07089
Symbiotic stars are eccellent laboratories to study a broad range of poorly understood physical processes, such as mass loss of red giants, accretion onto compact objects, and evolution of nova-like outbursts. As their evolution is strongly influence
Externí odkaz:
http://arxiv.org/abs/1106.1384
Context. With the arrival of the next generation of ground-based imaging interferometers combining from 4 to possibly 6 telescopes simultaneously, there is also a strong need for a new generation of fringe trackers able to cophase such arrays. These
Externí odkaz:
http://arxiv.org/abs/1104.1934
Autor:
Berger, J. -P., Zins, G., Lazareff, B., Lebouquin, J. -B., Jocou, L., Kern, P., Millan-Gabet, R., Traub, W., Haguenauer, P., Absil, O., Augereau, J. -C., Benisty, M., Blind, N., Bonfils, X., Delboulbe, A., Feautrier, P., Germain, M., Gillier, D., Gitton, P., Kiekebusch, M., Knudstrup, J., Lizon, J. -L, Magnard, Y., Malbet, F., Maurel, D., Menard, F., Micallef, M., Michaud, L., Morel, S., Moulin, T., Popovic, D., Perraut, K., Rabou, P., Rochat, S., Roussel, F., Roux, A., Stadler, E., Tatulli, E.
PIONIER is a 4-telescope visitor instrument for the VLTI, planned to see its first fringes in 2010. It combines four ATs or four UTs using a pairwise ABCD integrated optics combiner that can also be used in scanning mode. It provides low spectral res
Externí odkaz:
http://arxiv.org/abs/1008.5352
Autor:
Benisty, M., Natta, A., Isella, A., Berger, J-P., Massi, F., LeBouquin, J-B., Merand, A., Duvert, G., Kraus, S., Malbet, F., Olofsson, J., Robbe-Dubois, S., Testi, L., Vannier, M., Weigelt, G.
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,
Externí odkaz:
http://arxiv.org/abs/0911.4363
Autor:
Stefl, S., Rivinius, Th., Carciofi, A. C., LeBouquin, J. B., Baade, D., Bjorkman, K. S., Hesselbach, E., Hummel, C. A., Okazaki, A. T., Pollmann, E., Rantakyrö, F., Wisniewski, J. P.
Emission lines formed in decretion disks of Be stars often undergo long-term cyclic variations, especially in the violet-to-red (V/R) ratio of their primary components. From observations of the bright Be-shell star zeta Tau, the possibly broadest and
Externí odkaz:
http://arxiv.org/abs/0907.2250
Autor:
Tatulli, E., LeBouquin, J. -B.
Publikováno v:
Mon.Not.Roy.Astron.Soc.368:1159-1168,2006
There are several solutions to code the signal arising from optical long baseline multi-aperture interferometers. In this paper,we focus on the {\bf non homothetic spatial coding scheme} (multiaxial) with the fringe pattern coded along one dimension
Externí odkaz:
http://arxiv.org/abs/astro-ph/0602346
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