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It's Alive! The Supernova Impostor 1961V
Schuyler D. Van Dyk, Thomas Matheson
Reports of the death of the precursor of Supernova (SN) 1961V in NGC 1058 are exaggerated. Consideration of the best astrometric data shows that the star, known as "Object 7," lies…
Evidence for Type Ia Supernova Diversity from Ultraviolet Observations with the Hubble Space Telescope
Xiaofeng Wang, Lifan Wang, Alexei V. Filippenko +93
We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Sur…
The Massive Progenitor of the Possible Type II-Linear Supernova 2009hd in Messier 66
Nancy Elias-Rosa, Schuyler D. Van Dyk, Weidong Li +11
We present observations of SN2009hd in the nearby galaxy M66. This SN is one of the closest to us in recent years but heavily obscured by dust, rendering it unusually faint in the…
SAGE-Spectroscopy: The life-cycle of dust and gas in the Large Magellanic Cloud. Data delivery document v3.0
Paul M. Woods, G. C. Sloan, Karl D. Gordon +3
The SAGE-Spectroscopy Spitzer legacy program (SAGE-Spec; PI: F. Kemper, PID: 40159; Kemper et al. 2010) is the IRS spectroscopic follow-up to the successful SAGE-LMC legacy program…
Red Eyes on Wolf-Rayet Stars: 60 New Discoveries via Infrared Color Selection
Jon C. Mauerhan, Schuyler D. Van Dyk, Patrick. W. Morris
We have spectroscopically identified 60 Galactic Wolf-Rayet (WR) stars, including 38 nitrogen types (WN) and 22 carbon types (WC). Using photometry from the Spitzer/GLIMPSE and 2MA…
The Progenitor of Supernova 2011dh/PTF11eon in Messier 51
Schuyler D. Van Dyk, Weidong Li, S. Bradley Cenko +12
We have identified a luminous star at the position of supernova (SN) 2011dh/PTF11eon, in pre-SN archival, multi-band images of the nearby, nearly face-on galaxy Messier 51 (M51) ob…
The Formation of Kiloparsec-Scale HI Holes in Dwarf Galaxies
Steven R. Warren, Daniel R. Weisz, Evan D. Skillman +10
The origin of kpc-scale holes in the atomic hydrogen (H I) distributions of some nearby dwarf irregular galaxies presents an intriguing problem. Star formation histories (SFHs) der…
Dust and the type II-Plateau supernova 2004dj
Peter Meikle, Rubina Kotak, Duncan Farrah +13
We present mid-infrared (MIR) spectroscopy of a Type II-plateau supernova, SN 2004dj, obtained with the Spitzer Space Telescope, spanning 106--1393 d after explosion. MIR photometr…