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The Swift UVOT Stars Survey: I. Methods and Test Clusters
Michael H. Siegel, Blair L. Porterfield, Jacquelyn S. Linevsky +7
We describe the motivations and background of a large survey of nearby stel- lar populations using the Ultraviolet Optical Telescope (UVOT) aboard the Swift Gamma-Ray Burst Mission…
The Changing Fractions of Type Ia Supernova NUV-Optical Subclasses with Redshift
Peter A. Milne, Ryan J. Foley, Peter J. Brown +1
UV and optical photometry of Type Ia supernovae (SNe Ia) at low redshift have revealed the existence of two distinct color groups, NUV-red and NUV-blue events. The color curves dif…
The Ultraviolet Brightest Type Ia Supernova 2011de
Peter J. Brown
We present and discuss the UV/optical photometric light curves and absolute magnitudes of the Type Ia supernova (SN) 2011de from the Swift Ultraviolet/Optical Telescope. We find it…
SOUSA: the Swift Optical/Ultraviolet Supernova Archive
Peter J. Brown, Alice A. Breeveld, Stephen Holland +2
The Ultra-Violet Optical Telescope on the Swift spacecraft has observed hundreds of supernovae, covering all major types and most subtypes. Here we introduce the Swift Optical/Ultr…
SN Hunt 248: a super-Eddington outburst from a massive cool hypergiant
Jon C. Mauerhan, Schuyler D. Van Dyk, Melissa L Graham +8
We present photometric and spectroscopic observations of SN Hunt 248, a new supernova (SN) impostor in NGC 5806, which began a multi-stage outburst in 2014 May. The initial '2014a'…
Ultraviolet Observations of Super-Chandrasekhar Mass Type Ia Supernova Candidates with Swift UVOT
Peter J. Brown, Paul Kuin, Richard Scalzo +6
Among Type Ia supernovae (SNe~Ia) exist a class of overluminous objects whose ejecta mass is inferred to be larger than the canonical Chandrasekhar mass. We present and discuss the…