The Daily Brew
Selected astro-ph abstracts for Wednesday April 25
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astro-ph
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Diffuse cosmic gamma-rays at 1-20 MeV: A trace of the dark matter?
Kyle Lawson and Ariel R.Zhitnitsky
arXiv:0704.3064
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XMM-Newton view of galaxy pairs: activation of quiescent black holes?
E. Jimenez-Bailon, N. Loiseau, M. Guainazzi, G. Matt, D.
Rosa-Gonzalez, E. Piconcelli, and M. Santos-Lleo
arXiv:0704.3065
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Ages for illustrative field stars using gyrochronology: viability,
limitations and errors
Sydney A. Barnes
arXiv:0704.3068
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GRB 050826: A Subluminous Event at z = 0.296 Finds its Place in the
Luminosity Distribution of Gamma-Ray Burst Afterglows
N. Mirabal, J. P. Halpern, P. T. O'Brien
arXiv:0704.3069
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Star Formation and the Growth of Stellar Mass
Eric F. Bell (1), Xian Zhong Zheng (1,2), Casey Papovich (3), Andrea
Borch (4), Christian Wolf (5), and Klaus Meisenheimer (1) ((1) MPIA,
Heidelberg, (2) Purple Mountain Observatory, (3) Steward Observatory, (4)
ARI, Heidelberg, (5) Oxford)
arXiv:0704.3077
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Influence of Orbital Behaviour and Chaos on the Shape of Dark Matter
Halos
Andrea V. Maccio'(MPIA), Ioannis Sideris (Zurich), Marco Miranda
(Zurich), Ben Moore (Zurich), Roland Jesseit (Munich Obs.)
arXiv:0704.3078
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The Origin of the Galaxy Mass-Metallicity Relation and Implications for
Galactic Outflows
K. Finlator, R. Dave
arXiv:0704.3100
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The first determination of the actinide Th abundance for a red giant of
the Ursa Minor dwarf galaxy
Wako Aoki, Satoshi Honda, Kozo Sadakane, Nobuo Arimoto
arXiv:0704.3104
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A Surprising Reversal of Temperatures in the Brown-Dwarf Eclipsing
Binary 2MASS J05352184-0546085
Keivan G. Stassun, Robert D. Mathieu, Jeff A. Valenti
arXiv:0704.3106
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The Infrared Extinction Law at Extreme Depth in a Dark Cloud Core
C. Rom\'an-Z\'u\~niga, C. Lada, A. Muench, and J. Alves
arXiv:0704.3203
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