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105 papers · 1 filter
GMIMS: The Global Magneto-Ionic Medium Survey
M. Wolleben, T. L. Landecker, E. Carretti +10
The Global Magneto-Ionic Medium Survey (GMIMS) is a project to map the diffuse polarized emission over the entire sky, Northern and Southern hemispheres, from 300 MHz to 1.8 GHz. W…
Discovery of four gravitational lensing systems by clusters in the SDSS DR6
Zhong-Lue Wen, Jin-Lin Han, Xiang-Yang Xu +4
We report the discovery of 4 strong gravitational lensing systems by visual inspections of the Sloan Digital Sky Survey images of galaxy clusters in Data Release 6 (SDSS DR6). Two…
What is the fate of a black hole embedded in an expanding universe?
Valerio Faraoni, Changjun Gao, Xuelei Chen +1
Within a large class of exact solutions of the Einstein equations describing a black hole embedded in a Friedmann universe it is shown that, under certain assumptions, only those w…
STAGES: the Space Telescope A901/2 Galaxy Evolution Survey
M. E. Gray, Christian Wolf, Marco Barden +26
We present an overview of the Space Telescope A901/2 Galaxy Evolution Survey (STAGES). STAGES is a multiwavelength project designed to probe physical drivers of galaxy evolution ac…
The STAGES view of red spirals and dusty red galaxies: Mass-dependent quenching of star-formation in cluster infall
Christian Wolf, Alfonso Aragon-Salamanca, Michael Balogh +22
We investigate the properties of optically passive spirals and dusty red galaxies in the A901/2 cluster complex at redshift ~0.17 using restframe near-UV-optical SEDs, 24 micron IR…
On type Ia supernovae and the formation of single low-mass white dwarfs
Stephen Justham, Christian Wolf, Philipp Podsiadlowski +1
There is still considerable debate over the progenitors of type Ia supernovae (SNe Ia). Likewise, it is not agreed how single white dwarfs with masses less than ~0.5 Msun can be fo…