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Alain Spang
Researcher at Centre national de la recherche scientifique
Publications - 63
Citations - 1513
Alain Spang is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Stars & Interferometry. The author has an hindex of 20, co-authored 63 publications receiving 1450 citations. Previous affiliations of Alain Spang include University of Nice Sophia Antipolis & LG Electronics.
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Journal ArticleDOI
VEGA: Visible spEctroGraph and polArimeter for the CHARA array: principle and performance
Denis Mourard,Jean-Michel Clausse,A. Marcotto,Karine Perraut,I. Tallon-Bosc,Ph. Berio,A. Blazit,D. Bonneau,S. Bosio,Yves Bresson,Olivier Chesneau,O. Delaa,François Hénault,Y. Hughes,Stephane Lagarde,G. Merlin,A. Roussel,Alain Spang,Ph. Stee,M. Tallon,P. Antonelli,R. Foy,Pierre Kervella,Romain Petrov,Éric Thiébaut,Farrokh Vakili,Harold A. McAlister,T. ten Brummelaar,J. Sturmann,Laszlo Sturmann,Nils H. Turner,Chris Farrington,P. J. Goldfinger +32 more
TL;DR: The spectro-polarimeter VEGA has been installed and successfully tested on the CHARA Array as mentioned in this paper, and the results depend on the observing conditions (seeing, spectral resolution, etc.).
Journal ArticleDOI
First direct detection of a Keplerian rotating disk around the Be star α Arae using AMBER/VLTI
Anthony Meilland,Philippe Stee,Martin Vannier,Martin Vannier,Martin Vannier,Florentin Millour,Florentin Millour,A. Domiciano de Souza,A. Domiciano de Souza,Fabien Malbet,C. Martayan,Francesco Paresce,Romain Petrov,Andrea Richichi,Alain Spang +14 more
TL;DR: In this paper, the authors used the AMBER/VLTI instrument operating in the K-band, which provides a gain by a factor of 5 in spatial resolution compared to previous MIDI and VLTI observations, and combined the high angular resolution provided with the (medium) spectral resolution of AMBER to study the kinematics of the inner part of the disk and to infer its rotation law.
Journal ArticleDOI
First direct detection of a Keplerian rotating disk around the Be star $\alpha$ Arae using the VLTI/AMBER instrument
A. Meilland,Philippe Stee,Martin Vannier,Florentin Millour,Armando Domiciano de Souza,Fabien Malbet,Christophe Martayan,Francesco Paresce,Romain Petrov,Andrea Richichi,Alain Spang +10 more
TL;DR: In this paper, the authors used the VLTI/AMBER instrument operating in the K band to study the kinematics of the inner part of the disk and to infer its rotation law.
Journal ArticleDOI
Direct constraint on the distance of $\gamma^2$ Velorum from AMBER/VLTI observations
Florentin Millour,Florentin Millour,Romain Petrov,Olivier Chesneau,D. Bonneau,Luc Dessart,C. Bechet,Isabelle Tallon-Bosc,Michel Tallon,Eric Thiébaut,Farrokh Vakili,Fabien Malbet,Denis Mourard,P. Antonelli,Udo Beckmann,Yves Bresson,Alain Chelli,M. Dugué,Gilles Duvert,Sandro Gennari,L. Glück,P. Kern,Stephane Lagarde,E. Le Coarer,Franco Lisi,Karine Perraut,Pascal Puget,F. Rantakyrö,S. Robbe-Dubois,Alain Roussel,E. Tatulli,E. Tatulli,Gerd Weigelt,G. Zins,M. Accardo,Bram Acke,Bram Acke,K. Agabi,E. Altariba,B. Arezki,Eric Aristidi,Carlo Baffa,J. Behrend,T. Blöcker,S. Bonhomme,S. Busoni,Frédéric Cassaing,Jean-Michel Clausse,J. Colin,C. Connot,A. Delboulbé,A. Domiciano de Souza,A. Domiciano de Souza,Thomas Driebe,P. Feautrier,D. Ferruzzi,T. Forveille,Eric Fossat,R. Foy,Didier Fraix-Burnet,A. Gallardo,Elisabetta Giani,C. Gil,C. Gil,A. Glentzlin,M. Heiden,M. Heininger,O. Hernandez Utrera,Karl-Heinz Hofmann,D. Kamm,Mario Kiekebusch,Stefan Kraus,D. Le Contel,J. M. Le Contel,T. Lesourd,Bruno Lopez,Morgan Lopez,Y. Magnard,Alessandro Marconi,G. Mars,G. Martinot-Lagarde,Philippe Mathias,P. Mège,J.-L. Monin,D. Mouillet,D. Mouillet,E. Nussbaum,Keiichi Ohnaka,J. Pacheco,C. Perrier,Yves Rabbia,S. Rebattu,François Reynaud,Andrea Richichi,A. Robini,M. Sacchettini,Dieter Schertl,Markus Schöller,W. Solscheid,Alain Spang,Philippe Stee,P. Stefanini,D. Tasso,Leonardo Testi,O. von der Lühe,J.-C. Valtier,Martin Vannier,Martin Vannier,Martin Vannier,N. Ventura +109 more
TL;DR: The first AMBER observations of the Wolf-Rayet and O (WR+O) star binary system y² Velorum were presented in this article, with a resolution R = 1500 in the spectral band 1.95-2.17 micron.
Journal ArticleDOI
Kinematics and geometrical study of the Be stars 48 Persei and ψ Persei with the VEGA/CHARA interferometer
O. Delaa,O. Delaa,Ph. Stee,A. Meilland,Juan Zorec,D. Mourard,Ph. Berio,D. Bonneau,Olivier Chesneau,Jean-Michel Clausse,Pierre Cruzalèbes,Karine Perraut,A. Marcotto,A. Roussel,Alain Spang,H. A. McAlister,T. ten Brummelaar,J. Sturmann,L. Sturmann,Neal J. Turner,Chris Farrington,P. J. Goldfinger +21 more
TL;DR: In this article, the authors measured the size, orientation, shape, and kinematics of the disks around 2 Be stars, namely 48 Per and ψ Per, and found that the major axis of 48 Per is parallel to the polarization angle and not perpendicular to it as previously observed for many Be stars.