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569 papers · 1 filter
Discovery of Large-Scale Gravitational Infall in a Massive Protostellar Cluster
Peter J. Barnes, Yoshinori Yonekura, Stuart D. Ryder +4
We report Mopra (ATNF), Anglo-Australian Telescope, and Atacama Submillimeter Telescope Experiment observations of a molecular clump in Carina, BYF73 = G286.21+0.17, which give evi…
Discovery of a very highly extinguished supernova in a luminous infrared galaxy
E. Kankare, S. Mattila, S. Ryder +9
We report the discovery of a confirmed supernova (SN) and a supernova-candidate in near-infrared images from the ALTAIR/NIRI adaptive optics system on the Gemini-North Telescope an…
GRB 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission
D. A. Perley, B. D. Metzger, J. Granot +22
We report on observations of GRB 080503, a short gamma-ray burst with very bright extended emission (about 30 times the gamma-ray fluence of the initial spike) in conjunction with…
A spectroscopic survey of dwarf galaxies in the Coma Cluster: Stellar populations, environment and downsizing
Russell J. Smith, John R. Lucey, Michael J. Hudson +5
We investigate the stellar populations in a sample of 89 faint (M*+2 to M*+4) red galaxies in the Coma cluster, using high S/N spectroscopy from the MMT. Our sample is drawn from t…
The 2dF-SDSS LRG and QSO Survey: The spectroscopic QSO catalogue
Scott M. Croom, Gordon T. Richards, Tom Shanks +27
We present the final spectroscopic QSO catalogue from the 2dF-SDSS LRG and QSO (2SLAQ) Survey. This is a deep, 18<g<21.85 (extinction corrected), sample aimed at probing in detail…
A pair of leading spiral arms in a luminous infrared galaxy?
Petri Vaisanen, Stuart Ryder, Seppo Mattila +1
Leading spiral arms are a rare phenomenon. We present here one of the very few convincing candidates of spiral arms opening counter-intuitively in the same direction as the galaxy…