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Formation of the First Galaxies
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Title: The Formation of the First Galaxies Authors: Thomas H. Greif The primary concern of this thesis is to understand the formation and properties of the first galaxies, as well as the influence of the first stars in terms of radiative, mechanical and chemical feedback. In particular, we elucida...
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A168 and A1750
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Title: Galaxy Activity in Merging Binary Galaxy Clusters Authors: Ho Seong Hwang (Korea Institute for Advanced Study), Myung Gyoon Lee (Seoul National Univ.) We present the results of a study of galaxy activity in two merging binary clusters (A168 and A1750) using the Sloan Digital Sky Survey (SD...
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Abell 1240
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Title: Internal dynamics of Abell 1240: a galaxy cluster with symmetric double radio relics Authors: R. Barrena, M. Girardi, W. Boschin, M. Dasi We aim to obtain new insights into the internal dynamics of the cluster Abell 1240, showing the presence of two roughly symmetric radio relics, separate...
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SDSS J0924+0219
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Title: The accretion disc in the quasar SDSS J0924+0219 Authors: D. J. E. Floyd, N. F. Bate, R. L. Webster We present single-epoch multi-wavelength optical-NIR observations of the "anomalous" lensed quasar SDSS J0924+0219, made using the Magellan 6.5-metre Baade telescope at Las Ca...
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Segue 2
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Title: Segue 2: A Prototype of the Population of Satellites of Satellites Authors: V. Belokurov (1), M.G. Walker (1), N.W. Evans (1), G. Gilmore (1), M.J. Irwin (1), M. Mateo (2), L. Mayer (3), E. Olszewski (4), J. Bechtold (4), T. Pickering (5) ((1) Cambridge, (2) Univ of Michigan, (3) Zurich, (4) St...
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SDSS160705+533558
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Title: Resolved Dust Emission in a Quasar at z=3.65 Authors: D.L. Clements, Glen Petitpas, D. Farrah, E. Hatziminaoglou, T. Babbedge, M. Rowan-Robinson, I. Perez-Fournon, Antonio Hernan-Caballero, Nieves Castro-Rodriguez, C. Lonsdale, J. Surace, A. Franceschini, B.J. Wilkes, H. Smith We p...
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3C305
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Credit: X-ray (NASA/CXC/CfA/F.Massaro, et al.); Optical (NASA/STScI/C.P.O'Dea); Radio (NSF/VLA/CfA/F.Massaro, et al.) * 3C305 is a galaxy about 600 million light years from Earth * A supermassive black hole at its core is causing its intriguing appearance * It's still uncertain exactly what...
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IC 3328
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Title: On the nature of IC 3328, an early-type dwarf galaxy with weak spiral structure Authors: Thorsten Lisker, Burkhard Fuchs (ARI/ZAH, University of Heidelberg) (Version v2) Various early-type dwarf galaxies with disk features were identified in the Virgo cluster, including objects that d...
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Primordial deuterium abundance
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Researchers suggest that by measuring fluctuations in the absorption of cosmic microwave background (CMB) photons by neutral gas during the cosmic dark ages, at red shifts z ~ 7--200, could reveal the primordial deuterium abundance of the Universe.
The strength of the cross-c...
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ULIRG IRAS19254-7245
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Title: A Suzaku observation of the ULIRG IRAS19254-7245: disclosing the AGN component Authors: V. Braito, J.N. Reeves, R. Della Ceca, A. Ptak, G. Risaliti, T. Yaqoob We discuss here a long Suzaku observation of IRAS 19254-7245 (also known as the Superantennae), one of the brightest and well studi...
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Galaxy star streams
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An international team of astronomers has identified huge star streams in the outskirts of two nearby spiral galaxies. For the first time, they have obtained a panoramic overview of an example of galactic cannibalism similar to that involving the Sagittarius dwarf galaxy in the vicinity of the Mil...
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NGC 6340
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Title: NGC 6340: an old S0 galaxy with a young polar disc. Clues from morphology, internal kinematics and stellar populations Authors: Igor Chilingarian, Alexandra Novikova, Veronique Cayatte, Francoise Combes, Paola Di Matteo, Anatoly Zasov Lenticular galaxies are believed to form by a comb...
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Arp 194
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Over the past 19 years, Hubble has taken dozens of exotic pictures of galaxies going "bump in the night" as they collide with each other and have a variety of close encounters of the galactic kind. Just when you thought these interactions couldnt look any stranger, a new image of a trio of ga...
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UGC 628
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Depuis un peu plus d'une décennie, les observations de la cinématique des galaxies spirales montrent que les barres d'étoiles au centre des galaxies sont en rotation rapide. Ces mesures concernent presque exclusivement des galaxies spirales brillantes de type morphologique précoce, telles q...
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Supernova 2009dq
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A magnitude 15.2 supernova, 2009dq, was discovered by Pignata et al., at the CHilean Automatic Supernova sEarch (CHASE) on the 24th April 2009, in the Peculiar galaxy IC 2554 in the constellation Carina. The supernova is located 2" west and 3" south from the center of the galaxy. As yet th...
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