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The Araucaria Project : the Baade-Wesselink projection factor of pulsating stars
N. Nardetto, J. Storm, W. Gieren +2
The projection factor used in the Baade-Wesselink methods of determining the distance of Cepheids makes the link between the stellar physics and the cosmological distance scale. A…
An overlooked brown dwarf neighbour (T7.5 at d~5pc) of the Sun and two additional T dwarfs at about 10pc
Gabriel Bihain, Ralf-Dieter Scholz, Jesper Storm +1
Although many new brown dwarf (BD) neighbours have recently been discovered thanks to new sky surveys in the mid- and near-infrared (MIR, NIR), their numbers are still more than fi…
The Araucaria Project. A Distance Determination to the Local Group Spiral M33 from Near-Infrared Photometry of Cepheid Variables
W. Gieren, M. Gorski, G. Pietrzynski +10
Motivated by an amazing range of reported distances to the nearby Local Group spiral galaxy M33, we have obtained deep near-infrared photometry for 26 long-period Cepheids in this…