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126 papers · 2 filters
Abell 851 and the Role of Starbursts in Cluster Galaxy Evolution
A. Oemler, A. Dressler, D. Kelson +5
We use extensive new observations of the very rich z ~ 0.4 cluster of galaxies A851 to examine the nature and origin of starburst galaxies in intermediate-redshift clusters. New HS…
The GALEX View of Supernova Hosts
James D. Neill, Mark Sullivan, Mark Seibert
We exploit the accumulating, high-quality, multi-wavelength imaging data of nearby supernova (SN) hosts to explore the relationship between SN production and host galaxy evolution.…
High Redshift Metals I.: The Decline of C IV at z > 5.3
George D. Becker, Michael Rauch, Wallace L. W. Sargent
We present the results from our search for C IV in the intergalactic medium at redshifts z=5.3-6.0. We have observed four z~6 QSOs with Keck/NIRSPEC in echelle mode. The data are t…
WINGS-SPE Spectroscopy in the WIde-field Nearby Galaxy-cluster Survey
A. Cava, D. Bettoni, B. M. Poggianti +11
Aims. We present the results from a comprehensive spectroscopic survey of the WINGS (WIde-field Nearby Galaxy-cluster Survey) clusters, a program called WINGS-SPE. The WINGS-SPE sa…
The XMM-Newton view of AGN with intermediate mass black holes
G. Miniutti, G. Ponti, J. E. Greene +3
We have observed with XMM-Newton four radiatively efficient active type 1 galaxies with black hole masses < 10^6 Msun, selected optically from the SDSS. We show here that their sof…
Powerful H Emission and Star Formation on the Interacting Galaxy System Arp 143: Observations with Spitzer and GALEX
P. Beirão, P. N. Appleton, B. R. Brandl +3
We present new mid-infrared (m) and ultraviolet (1539 -- 2316 Å) observations of the interacting galaxy system Arp 143 (NGC 2444/2445) from the Spitzer Space Telescope and…