The Daily Brew
Selected astro-ph abstracts for Wednesday November 8
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First stars as a possible origin for the helium-rich population in omega
Centauri
Ena Choi, Sukyoung K. Yi
Comments: 6 pages, 5 figures, accepted for publication of MNRAS
astro-ph/0611193
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The Luminosity Function of Lyman Alpha Emitting Galaxies and Cosmic
Reionisation of Hydrogen
Mark Dijkstra, Stuart Wyithe (Melbourne), Zoltan Haiman (Columbia)
Comments: 7 pages, 5 figures, Submitted to MNRAS
astro-ph/0611195
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How special are Brightest Group and Cluster Galaxies?
Anja von der Linden (MPA Garching), Philip N. Best (IfA Edinburgh),
Guinevere Kauffmann (MPA Garching), Simon D. M. White (MPA Garching)
Comments: 26 pages, 25 figures, submitted to MNRAS. Version with full
resolution figures available at
http://www.mpa-garching.mpg.de/~anja/bcgs_avdl.pdf
astro-ph/0611196
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On the prevalence of radio-loud AGN in brightest cluster galaxies:
implications for AGN heating of cooling flows
P.N.Best (IfA Edinburgh), A. von der Linden (MPA Garching),
G.Kauffmann (MPA Garching), T.M.Heckman (Johns Hopkins), C.R.Kaiser
(Southampton)
Comments: Submitted to MNRAS. LaTeX, 16 pages. Pages 6,7 and 8 contain colour
figures
astro-ph/0611197
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Improved Measurements of the CMB Power Spectrum with ACBAR
C.L. Kuo (1,2), P.A.R. Ade (3), J.J. Bock (1,2), J.R. Bond (4), C.R.
Contaldi (4,5), M.D. Daub (6), J.H. Goldstein (7), W.L. Holzapfel (6), A.E.
Lange (1,2), M. Lueker (6), M. Newcomb (8), J.B. Peterson (9), C. Reichardt
(1), J. Ruhl (7), M.C. Runyan (10), Z. Staniszweski (7), ((1) Caltech, (2)
JPL, (3) Cardiff, (4) CITA, (5) Imperial, (6) Berkeley, (7) CWRU, (8) Yerkes,
(9) CMU, (10) Chicago)
Comments: 19 pages, 9 figures, ApJ
astro-ph/0611198
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The accretion ratios in Seyfert 2 galaxies with and without hidden
broad-line regions
W. Bian (1,2) and Q. Gu (3) ((1)IHEP, (2)NJNU, (3)NJU)
Comments: Accepted by ApJ, 3 Tables, 6 Figures
astro-ph/0611199
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High resolution imaging of the anomalous flux-ratio gravitational lens
system CLASS B2045+265: Dark or luminous satellites?
J.P. McKean (1, 2), L.V.E. Koopmans (3), C.E. Flack (1, 4), C.D.
Fassnacht (1), D. Thompson (5), K. Matthews (5), R.D. Blandford (6), A.C.S.
Readhead (7), B.T. Soifer (5) ((1) UC Davis, (2) MPIfR, (3) Kapteyn
Institute, (4) Bemidji State, (5) Caltech Optical Observatories, (6) KIPAC,
(7) Caltech Astronomy)
Comments: 10 pages, 6 figures, submitted to MNRAS
astro-ph/0611215
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How large is the population of heavily obscured X-ray sources?
Filippo Frontera (1,2), Mauro Orlandini (1), Raffaella Landi (1),
Andrea Comastri (3), Fabrizio Fiore (4), Giancarlo Setti (5,6), Lorenzo Amati
(1), Enrico Costa (7), Nicola Masetti (1), and Eliana Palazzi (1) ((1)
INAF/IASF Bologna, (2) Uni Ferrara, (3) INAF/OA Bologna, (4) INAF/OA Roma,
(5) Uni Bologna, (6) INAF/IRA, (7) INAF/IASF Roma)
Comments: Submitted to Nature Physics. Main article: 13 pages, 2 Tables, 2
Figures. Supplementary Information: 18 pages, 1 Table, 8 Figures
astro-ph/0611228
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A Method to Derive the Absolute Composition of the Sun, the Solar System
and the Stars
L. Piersanti, O. Straniero, S. Cristallo
Comments: 22 pages, 8 figures, accepted by A&A
astro-ph/0611229
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