The Daily Brew
Selected astro-ph abstracts for Monday July 23
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Dynamical Friction and Galaxy Merging Timescales
Michael Boylan-Kolchin, Chung-Pei Ma, and Eliot Quataert (UC Berkeley)
arXiv:0707.2960
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A comprehensive study of Cepheid variables in the Andromeda galaxy.
Period distribution, blending and distance determination
F. Vilardell (1), C. Jordi (1 and 3), I. Ribas (2 and 3) ((1)
Universitat de Barcelona, (2) Institut de Ciencies de l'Espai-CSIC, (3)
Institut d'Estudis Espacials de Catalunya)
arXiv:0707.2965
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Microlensing by Cosmic Strings
Konrad Kuijken (1), Xavier Siemens (2,3), Tanmay Vachaspati (4) ((1)
Leiden Observatory, Leiden University (2) LIGO Laboratory, CalTech (3)
Theoretical Astrophysics, CalTech (4) CERCA, Dept of Physics, Case Western
Reserve University)
arXiv:0707.2971
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Revised metallicity classes for low-mass stars: dwarfs (dM), subdwarfs
(sdM), extreme subdwarfs (esdM), and ultra subdwarfs (usdM)
Sebastien Lepine, R. Michael Rich, and Michael M. Shara
arXiv:0707.2993
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Mixing in massive stellar mergers
E. Gaburov (1 and 2), J. C. Lombardi (3), S. Portegies Zwart (1 and 2)
((1) Astronomical Institute 'Anton Pannekoek' University of Amsterdam, the
Netherlands, (2) Section Computational Science, University of Amsterdam, the
Netherlands, (3) Department of Physics, Allegheny College, USA)
arXiv:0707.3021
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Water vapour in the atmosphere of a transiting extrasolar planet
Giovanna Tinetti, Alfred Vidal-Madjar, Mao-Chang Liang, Jean-Philippe
Beaulieu, Yuk Yung, Sean Carey, Robert J. Barber, Jonathan Tennyson, Ignasi
Ribas, Nicole Allard, Gilda E. Ballester, David K. Sing, Franck Selsis
arXiv:0707.3064
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