J
Joseph M. Anderson
Researcher at Purdue University
Publications - 77
Citations - 6044
Joseph M. Anderson is an academic researcher from Purdue University. The author has contributed to research in topics: Globular cluster & Stars. The author has an hindex of 40, co-authored 75 publications receiving 5723 citations. Previous affiliations of Joseph M. Anderson include Rice University & Rush University Medical Center.
Papers
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Journal ArticleDOI
A triple main sequence in the globular cluster NGC 2808
Giampaolo Piotto,Luigi R. Bedin,Joseph M. Anderson,Ivan R. King,Santi Cassisi,Antonino Milone,S. Villanova,Adriano Pietrinferni,Alvio Renzini +8 more
TL;DR: In this paper, the main sequence (MS) of the globular cluster NGC 2808 splits into three separate branches, and the three branches may be associated with the complexities of the cluster's horizontal branch and of its abundance distribution.
Journal ArticleDOI
Omega Centauri: The Population Puzzle Goes Deeper
Luigi R. Bedin,Giampaolo Piotto,Joseph M. Anderson,S. Cassisi,I. R. King,Yazan Momany,Giovanni Carraro +6 more
TL;DR: In this article, the authors present HST observations that show a bifurcation of colors in the middle main sequence of the globular cluster Omega Centauri and suggest various explanations, none of them very conclusive.
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Microlens OGLE-2005-BLG-169 Implies That Cool Neptune-like Planets Are Common
Andrew Gould,Andrzej Udalski,Deokkeun An,David P. Bennett,A. Y. Zhou,Subo Dong,Nicholas J. Rattenbury,B. S. Gaudi,P. C. M. Yock,Ian A. Bond,G. W. Christie,Keith Horne,Joseph M. Anderson,Krzysztof Z. Stanek,Darren L. DePoy,C. Han,Jennie McCormick,Byeong-Gon Park,Richard W. Pogge,Shawn Poindexter,Igor Soszyński,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,O. Szewczyk,Łukasz Wyrzykowski,K. Ulaczyk,Bohdan Paczynski,D. M. Bramich,Colin Snodgrass,Iain A. Steele,Martin Burgdorf,M. F. Bode,C. S. Botzler,Shude Mao,S. C. Swaving +35 more
TL;DR: In this paper, the authors detect a Neptune mass ratio (q 8? 10-5) planetary companion to the lens star in the extremely high magnification (A ~ 800) microlensing event OGLE-2005-BLG-169.
Journal ArticleDOI
Microlens OGLE-2005-BLG-169 Implies Cool Neptune-Like Planets are Common
Andrew Gould,Andrzej Udalski,Deokkeun An,David P. Bennett,A. Y. Zhou,Subo Dong,N. J. Rattenbury,B. S. Gaudi,P. C. M. Yock,Ian A. Bond,G. W. Christie,Keith Horne,Joseph M. Anderson,Krzysztof Z. Stanek,Darren L. DePoy,C. Han,Jennie McCormick,Byeong-Gon Park,Richard W. Pogge,Shawn Poindexter,Igor Soszyński,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,O. Szewczyk,L. Wyrzykowski,K. Ulaczyk,Bohdan Paczynski,D. M. Bramich,Colin Snodgrass,Iain A. Steele,Martin Burgdorf,M. F. Bode,C. S. Botzler,Shude Mao,S. C. Swaving +35 more
TL;DR: In this paper, the authors detect a Neptune mass-ratio (q~8e-5) planetary companion to the lens star in the extremely high-magnification (A~800) microlensing event OGLE-2005-BLG-169.
Journal ArticleDOI
The multiplicity of the subgiant branch of ω centauri : Evidence for prolonged star formation
S. Villanova,Giampaolo Piotto,I. R. King,Joseph M. Anderson,Luigi R. Bedin,R. G. Gratton,S. Cassisi,Yazan Momany,Andrea Bellini,Adrienne M. Cool,Alejandra Recio-Blanco,Alvio Renzini +11 more
TL;DR: In this paper, the authors combine spectroscopic and photometric data for subgiant stars of ω Cen to extract results that neither data set could have provided on its own.