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Tracking down R Coronae Borealis stars from their mid-infrared WISE colours
Patrick Tisserand
R Coronae Borealis stars (RCBs) are hydrogen-deficient and carbon-rich supergiant stars. They are very rare, as only are actually known in our Galaxy. Interestingly, RCBs…
Long Period Variables in the Large Magellanic Cloud from the EROS-2 survey
M. Spano, N. Mowlavi, L. Eyer +4
Context. The EROS-2 survey has produced a database of millions of time series from stars monitored for more than six years, allowing to classify some of their sources into differen…
The OGLE View of Microlensing towards the Magellanic Clouds. IV. OGLE-III SMC Data and Final Conclusions on MACHOs
L. Wyrzykowski, J. Skowron, S. Kozlowski +9
In this fourth part of the series presenting the Optical Gravitational Lensing Experiment (OGLE) microlensing studies of the dark matter halo compact objects (MACHOs) we describe r…
SkyMapper Filter Set: Design and Fabrication of Large Scale Optical Filters
Michael Bessell, Gabe Bloxham, Brian Schmidt +3
The SkyMapper Southern Sky Survey will be conducted from Siding Spring Observatory with u, v, g, r, i and z filters that comprise glued glass combination filters of dimension 309x3…
Oxygen- and carbon-rich variable red giant populations in the Magellanic Clouds from EROS, OGLE, MACHO, and 2MASS photometry
M. Wisniewski, J. B. Marquette, J. P. Beaulieu +3
The carbon-to-oxygen (C/O) ratio of asymptotic giant branch (AGB) stars constitutes an important index of evolutionary and environment/metallicity factor. We develop a method for m…