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Cl 1604 Supercluster
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Title: The Complex Structure of the Cl 1604 Supercluster at z~0.9 Authors: R. R. Gal, B. C. Lemaux, L. M. Lubin, D. Kocevksi, G. K. Squires The Cl1604 supercluster at z=0.9 is one of a small handful of such structures discovered in the high redshift universe, and is the first target observed as part of t...
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IRAS 16552-3050
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Title: VLA observations of the "water fountain" IRAS 16552-3050 Authors: Olga Suárez (1 and 2), J.F. Gómez (2), L.F. Miranda (2) ((1) University of Nice, France, (2) IAA, Granada-Spain) We present Very Large Array (VLA) observations of the water maser emission towards IRAS 16552-305...
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Minimum mass for galaxies
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By analysing light from small, faint galaxies that orbit the Milky Way, UC Irvine scientists believe they have discovered the minimum mass for galaxies in the universe 10 million times the mass of the sun. This mass could be the smallest known "building block" of the mysterious, invisib...
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Merging Galaxies
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Astronomers have caught multiple massive galaxies in the act of merging about 4 billion years ago. This discovery, made possible by combining the power of the best ground- and space-based telescopes, uniquely supports the favoured theory of how galaxies form. How do galaxies form? The most widel...
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2XMM J083026+524133
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ESAs orbiting X-ray observatory XMM-Newton has discovered the most massive cluster of galaxies seen in the distant Universe until now. The galaxy cluster is so big that there can only be a handful of them at that distance, making this a rare catch indeed. The discovery confirms the existence of dark...
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GRB 080822B
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At 21:02:52 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080822B (trigger=321376). Swift did not slew to this burst because of the Moon observing constraint. It will come out of Moon constraint early 26 Aug 08 UT. The BAT on-board calculated location is RA, Dec 63.495, +25.7...
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J1420--0545
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Title: J1420--0545: The radio galaxy larger than 3C236 Authors: J. Machalski, D. Kozie-Wierzbowska, M. Jamrozy, D.J. Saikia We report the discovery of the largest giant radio galaxy, J1420-0545: a FR type II radio source with an angular size of 17.4' identified with an optical galaxy at z=0.3067...
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Antlia cluster II
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Title: Galaxy populations in the Antlia cluster. II. Compact elliptical galaxy candidates Authors: Analia V. Smith Castelli, Favio R. Faifer, Tom Richtler, Lilia P. Bassino We present a photometric analysis of four galaxies classified as compact elliptical (cE) galaxies in the FS90 Antlia Gro...
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RGB J0152+017
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Title: Discovery of VHE gamma-rays from RGB J0152+017 Authors: J.-P. Lenain, D. Nedbal, M. Raue, S. Kaufmann, L. Gérard, M. Hauser, B. Giebels, for the H.E.S.S. collaboration The BL Lac object RGB J0152+017 (z = 0.080) was predicted to be a very high-energy (VHE; > 100 GeV) gamma-ray source, due...
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Primordial Helium Abundance
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Title: On the Primordial Helium Abundance and the DeltaY/DeltaO Ratio
Authors: M. Peimbert (IA-Unam), V. Luridiana (IAA, Csic), A. Peimbert (IA-Unam), L. Carigi (IA-Unam)
We present a review on the determination of the primordial helium abundance, Yp, based on the study...
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Map of the Universe
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Title: A Map of the Universe Authors: Gott, J. Richard, III; Juri, Mario; Schlegel, David; Hoyle, Fiona; Vogeley, Michael; Tegmark, Max; Bahcall, Neta; Brinkmann, Jon We have produced a new conformal map of the universe illustrating recent discoveries, ranging from Kuiper Belt ob...
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Einstein ring
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Astronomers have spotted the most distant Einstein ring ever seen. It gives an insight into both the gravitational lensing galaxy and the more distant magnified galaxy.
Gravitational lensing occurs because massive objects - ranging from stars to entire galaxies - distort the fabric of space-...
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Dark Matter Filament
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Title: The NGC 672 and NGC 784 Galaxy Groups: Evidence for Galaxy Formation and Growth Along a Nearby Dark Matter Filament Authors: Adi Zitrin, Noah Brosch We present U, B, V, R, I, H-alpha and NUV photometry of 14 galaxies in the very local Universe (within 10 Mpc that are dwarf irregular galaxies (dI...
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Balmer-Line Emitters
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Title: A Chandra Look at Five of the Broadest Double-Peaked Balmer-Line Emitters Authors: Iskra V. Strateva (1), W. N. Brandt (2), Michael Eracleous (2), Gordon Garmire (2) ((1) MPE, Germany; (2) Penn State University, USA) We study the 0.5-10keV emission of a sample of five of the broadest double...
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Quasar PG 2130+099
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Title: The Mass of the Black Hole in the Quasar PG 2130+099 Authors: C. J. Grier, B. M. Peterson, M. C. Bentz, K. D. Denney, J. D. Eastman, M. Dietrich, R. W. Pogge, J. L. Prieto, D. L. DePoy, R. J. Assef, D. W. Atlee, J. Bird, M. E. Eyler, M. S. Peeples, R. Siverd, L. C. Watson, J. C. Yee We present the results o...
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