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Abell 267
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Title: X-ray emission from RX J1720.1+2638 and Abell 267: a comparison between a fossil and a non-fossil system Authors: Elena Jiménez-Bailón, Mónica Lozada-Muñoz, J. Alfonso L. Aguerri We present the XMM-Newton X-ray analysis of RXJ1720.1+2638 and Abell267, a non-fossil and a fossil system,...
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NGC 4449
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Nearly 12.5 million light-years away in the dwarf galaxy NGC 4449 a veritable stellar "fireworks" is on display here shown in exquisite detail through the eyes of the Hubble Space Telescope. Hundreds of thousands of vibrant blue and red stars are visible in this new image of galaxy NGC 44...
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RX J1548.9+0851
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Title: RX J1548.9+0851, a fossil cluster? Authors: P. Eigenthaler, W.W. Zeilinger Fossil galaxy groups are spatially extended X-ray sources with X-ray luminosities above L_X,bol > 10^42 h_50^-2 ergs s^-1 and a central elliptical galaxy dominating the optical, the second-brightest galax...
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5C 3.178
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Title: Discovery of transient high-energy gamma-ray emission from the BL Lacertae object 5C 3.178 Authors: Hugh Dickinson, Christian Farnier We report the discovery of transient, point-like high energy gamma-ray emission coincident with the position of the suspected BL Lac object 5C 3.178. T...
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CFHQS J2329-0301
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Chris Willott (University of Ottawa) and a large international research team identified four new quasars at redshift greater than z = 6 from MegaCam imaging at the Canada-France-Hawaii Telescope (CFHT). Follow-up spectroscopy with GMOS at the Gemini South telescope (and the Marcario LRS at the...
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SMM J04135+10277
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Title: SMM J04135+10277: A Candidate Early-Stage "Wet-Dry" Merger of Two Massive Galaxies at z=2.8 Authors: Dominik A. Riechers (Cornell) We report interferometric imaging of CO(J=3-2) emission toward the z=2.846 submillimetre-selected galaxy SMM J04135+10277, using the Comb...
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Calcium Abundance
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The universe contains one and a half times more calcium than previously assumed. This conclusion was drawn by astronomers of the SRON Netherlands Institute for Space Research, after observations with ESA's XMM-Newton X-ray observatory. This research offers scientists new insights in th...
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Intermediate Redshift Clusters
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Title: Stellar populations and evolution of early-type cluster galaxies: Constraints from optical imaging and spectroscopy of z=0.5-0.9 galaxy clusters Authors: Inger Jorgensen, Kristin Chiboucas (Gemini Observatory) We present an analysis of stellar populations and evolutionary histo...
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Cosmic Web Stripping
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Cosmic Web Stripping removes gas from a very fast dwarf galaxy crossing the local web. See more
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Diffuse gas cooling
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Title: How the diffuse Universe cools Authors: Serena Bertone (ESA/Aviospace), Anthony Aguirre (UCSC), Joop Schaye (Leiden Observatory) In this work we investigate the cooling channels of diffuse gas (i.e. n_H<0.1 cm^-3) in cosmology. We aim to identify the wavelengths where most of the en...
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Abell 1914
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Title: The puzzling merging cluster Abell 1914: new insights from the kinematics of member galaxies Authors: R. Barrena (1,2), M. Girardi (3,4), W. Boschin (5) ((1) Instituto de Astrofisica de Canarias, Spain (2) La Laguna University, Astronomy Dept., Spain (3) Osservatorio Astronomico di Tri...
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The Great Attractor
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A new survey by University of Hawaii astronomers has found that, in a tug-of-war of cosmic proportions, our Milky Way galaxy is being pulled toward the largest concentration of matter in the observable Universe.
This finding is being presented today by University of Hawaii graduate student Dal...
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Abell 1991
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Title: Investigation of X-ray cavities in the cooling flow system Abell 1991 Authors: M.B.Pandge, N.D.Vagshette, S.S.Sonkamble, M.K.Patil We present results based on the systematic analysis of Chandra archive data on the X-ray bright Abell Richness class-I type cluster Abell 1991 with an obj...
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3C 66A
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The blazar 3C 66A has been observed to have brightened. Now at magnitude V = 13.8 Position (2000): RA 02:22:39.61, Dec +43:02:07.8
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IRAS 09104+4109
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Title: A Giant Metrewave Radio Telescope/Chandra view of IRAS 09104+4109: A type 2 QSO in a cooling flow Authors: Ewan O'Sullivan, Simona Giacintucci, Arif Babul, Somak Raychaudhury, Tiziana Venturi, Chris Bildfell, Andisheh Mahdavi, J. B. R. Oonk, Norman Murray, Henk Hoekstra, Megan Dona...
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