The Daily Brew
Selected astro-ph abstracts for Monday June 18
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Effects of Selection and Covariance on X-ray Scaling Relations of Galaxy
Clusters
B.Nord, R. Stanek, E. Rasia, A.E. Evrard
arXiv:0706.2189
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A wide deep infrared look at the Pleiades with UKIDSS: new constraints
on the substellar binary fraction and the low mass IMF
N. Lodieu (1 and 2), P. D. Dobbie (3 and 2), N. R. Deacon (4), S. T.
Hodgkin (5), N. C. Hambly (6), R. F. Jameson (2) ((1) IAC, Tenerife, (2)
Leicester, UK, (3) AAO, Australia, (4) Radboud University Nijmegen, (5) IoA,
Cambridge, UK, (6) SUPA, ROE, Edinburgh, UK)
arXiv:0706.2234
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MOST photometry and DDO spectroscopy of the eclipsing (white dwarf + red
dwarf) binary V471 Tau
Krzysztof Z. Kaminski, Slavek M. Rucinski, Jaymie M. Matthews, Rainer
Kuschnig, Jason F. Rowe, David B. Guenther, Anthony F. J. Moffat, Dimitar
Sasselov, Gordon A. H. Walker, Werner W. Weiss
arXiv:0706.2278
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The fraction of binary systems in the core of thirteen low-density
Galactic globular clusters
A. Sollima, G. Beccari, F. R. Ferraro, F. Fusi Pecci, A. Sarajedini
arXiv:0706.2288
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The Monitor project: JW 380 -- a 0.26, 0.15 Msol pre main sequence
eclipsing binary in the Orion Nebula Cluster
Jonathan Irwin, Suzanne Aigrain, Simon Hodgkin, Keivan G. Stassun,
Leslie Hebb, Mike Irwin, Estelle Moraux, Jerome Bouvier, Aude Alapini,
Richard Alexander, D.M. Bramich, Jon Holtzman, Eduardo L. Martin, Mark J.
McCaughrean, Frederic Pont, P.E. Verrier, Maria Rosa Zapatero Osorio
arXiv:0706.2325
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The Cosmic Horseshoe: Discovery of an Einstein Ring around a Giant
Luminous Red Galaxy
V. Belokurov (1), N.W.Evans (1), A.Moiseev (2), L.J. King (1), P.C.
Hewett (1), M. Pettini (1), L. Wyrzykowski (1,4), R.G. McMahon (1), G.
Gilmore (1), S.F. Sanchez (3), A. Udalski (4), S. Koposov (5), D.B. Zucker
(1), C.J. Walcher (6) ((1) Cambridge, (2) SAO, (3) Calar Alto, (4) Warsaw,
(5) MPIA, (6) Marseille)
arXiv:0706.2326
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Probing the Relation Between X-ray-Derived and Weak-Lensing-Derived
Masses for Shear-Selected Galaxy Clusters: I. A781
Neelima Sehgal (1), John P. Hughes (1), David Wittman (2), Vera
Margoniner (2), J. Anthony Tyson (2), Perry Gee (2), Ian Dell'Antonio (3)((1)
Rutgers, (2) UC Davis, (3) Brown)
arXiv:0706.2351
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