G
G. Blanc
Researcher at DSM
Publications - 5
Citations - 296
G. Blanc is an academic researcher from DSM. The author has contributed to research in topics: Gravitational microlensing & Dark matter. The author has an hindex of 5, co-authored 5 publications receiving 291 citations.
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Journal ArticleDOI
Limits on Galactic dark matter with 5 years of EROS SMC data
C. Afonso,C. Afonso,C. Afonso,J. N. Albert,Johannes Andersen,R. Ansari,Éric Aubourg,P. Bareyre,P. Bareyre,Jean-Philippe Beaulieu,G. Blanc,X. Charlot,F. Couchot,Ch. Coutures,Roger Ferlet,P. Fouque,J. F. Glicenstein,Bertrand Goldman,Bertrand Goldman,Bertrand Goldman,Andrew Gould,Andrew Gould,David S. Graff,M. Gros,J. Haissinski,C. Hamadache,J. de Kat,Thierry Lasserre,L. Le Guillou,É. Lesquoy,É. Lesquoy,C. Loup,Christophe Magneville,J. B. Marquette,E. Maurice,Anaëlle Maury,A. Milsztajn,M. Moniez,Nathalie Palanque-Delabrouille,O. Perdereau,L. Prevot,Y. R. Rahal,J. Rich,Michel Spiro,P. Tisserand,Alfred Vidal-Madjar,L. Vigroux,S. Zylberajch +47 more
TL;DR: In this article, the authors used EROS data towards the Small Magellanic Cloud (SMC) to search for gravitational microlensing events, using a new, more accurate method to assess the impact of stellar blending on the efficiency.
Journal ArticleDOI
Bulge microlensing optical depth from EROS 2 observations
C. Afonso,C. Afonso,C. Afonso,J. N. Albert,C. Alard,Johannes Andersen,Reza Ansari,Éric Aubourg,P. Bareyre,P. Bareyre,F. Bauer,Jean-Philippe Beaulieu,G. Blanc,A. Bouquet,S. Char,X. Charlot,F. Couchot,Ch. Coutures,F. Derue,F. Derue,Roger Ferlet,P. Fouque,J. F. Glicenstein,Bertrand Goldman,Bertrand Goldman,Bertrand Goldman,Andrew Gould,Andrew Gould,David S. Graff,M. Gros,J. Haissinski,C. Hamadache,Jean-Christophe Hamilton,D. Hardin,J. de Kat,A. Kim,Thierry Lasserre,L. LeGuillou,É. Lesquoy,É. Lesquoy,C. Loup,Christophe Magneville,B. Mansoux,J. B. Marquette,E. Maurice,Anaëlle Maury,A. Milsztajn,Marc Moniez,Nathalie Palanque-Delabrouille,O. Perdereau,L. Prevot,N. Regnault,J. Rich,Michel Spiro,P. Tisserand,Alfred Vidal-Madjar,L. Vigroux,S. Zylberajch +57 more
TL;DR: In this article, a measurement of the microlensing optical depth toward the Galactic bulge based on the analysis of 15 contiguous1 square degrees fields centered on (l=2.5 deg, b=-4.0 deg) and containing 1.42 million clump-giant stars (belonging to the extended clump area) monitored during almost three bulge seasons by EROS (Experience de Recherche d'Objets Sombres).
Journal ArticleDOI
EROS 2 proper motion survey: Constraints on the halo white dwarfs ?
Bertrand Goldman,Bertrand Goldman,Bertrand Goldman,C. Afonso,C. Afonso,C. Afonso,C. Alard,J. N. Albert,Alexis Amadon,Johannes Andersen,R. Ansari,Éric Aubourg,P. Bareyre,P. Bareyre,F. Bauer,J. Ph. Beaulieu,G. Blanc,A. Bouquet,X. Charlot,F. Couchot,Ch. Coutures,F. Derue,Roger Ferlet,P. Fouque,J. F. Glicenstein,Andrew Gould,Andrew Gould,D. Graff,M. Gros,J. Haissinski,C. Hamadache,J.-Ch. Hamilton,D. Hardin,J. de Kat,A. Kim,T. Lasserre,L. Le Guillou,É. Lesquoy,É. Lesquoy,C. Loup,C. Magneville,B. Mansoux,J. B. Marquette,E. Maurice,Anaëlle Maury,A. Milsztajn,M. Moniez,Nathalie Palanque-Delabrouille,O. Perdereau,L. Prevot,N. Regnault,J. Rich,Michel Spiro,P. Tisserand,Alfred Vidal-Madjar,L. Vigroux,S. Zylberajch +56 more
TL;DR: In this paper, the authors conducted a proper motion survey in the V and I bands in order to determine the cool white dwarf contribution to the Galactic dark matter, using the 250 2 for which they possess three epochs, and applying selection criteria designed to isolate halo-type objects.
Journal ArticleDOI
Photometric constraints on microlens spectroscopy of EROS-BLG-2000-5
C. Afonso,J. N. Albert,Johannes Andersen,Reza Ansari,Éric Aubourg,P. Bareyre,P. Bareyre,F. Bauer,G. Blanc,A. Bouquet,S. Char,X. Charlot,F. Couchot,Ch. Coutures,F. Derue,Roger Ferlet,P. Fouque,J. F. Glicenstein,Bertrand Goldman,Andrew Gould,Andrew Gould,David S. Graff,David S. Graff,M. Gros,J. Haissinski,Jean-Christophe Hamilton,D. Hardin,J. de Kat,A. Kim,T. Lasserre,L. LeGuillou,É. Lesquoy,É. Lesquoy,C. Loup,Christophe Magneville,B. Mansoux,J. B. Marquette,E. Maurice,A. Milsztajn,Marc Moniez,Nathalie Palanque-Delabrouille,O. Perdereau,L. Prevot,N. Regnault,J. Rich,Michel Spiro,Alfred Vidal-Madjar,L. Vigroux,S. Zylberajch +48 more
TL;DR: In this paper, the authors apply EROS photometric data to interpret previously published Keck and VLT spectra of the binary-microlens caustic-crossing event EROS-BLG-2000-5.
Journal ArticleDOI
Blue irregular variable stars in the Small Magellanic Cloud from EROS2 : Herbig Ae/Be or classical Be stars ?
J. P. Beaulieu,W. J. de Wit,W. J. de Wit,H. J. G. L. M. Lamers,J. B. Marquette,Ch. Coutures,P. Leisy,S. Totor,Nathalie Palanque-Delabrouille,C. Afonso,C. Alard,J. N. Albert,Johannes Andersen,Reza Ansari,Éric Aubourg,P. Bareyre,F. Bauer,G. Blanc,X. Charlot,F. Couchot,F. Derue,Roger Ferlet,Pascal Fouqué,J. F. Glicenstein,Bertrand Goldman,David S. Graff,M. Gros,J. Haissinski,Jean-Christophe Hamilton,D. Hardin,J. de Kat,T. Lasserre,É. Lesquoy,É. Lesquoy,C. Loup,Christophe Magneville,B. Mansoux,E. Maurice,A. Milsztajn,Marc Moniez,O. Perdereau,L. Prevot,N. Regnault,J. Rich,Michel Spiro,Alfred Vidal-Madjar,L. Vigroux,S. Zylberajch +47 more
TL;DR: In this article, the discovery of two blue objects with irregular photometric behaviour of V 0:1{0:4 mag on time scales of 20 to 200 days using data from the EROS2 microlensing survey.