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The first month of evolution of the slow rising type II-P SN 2013ej in M74
S. Valenti, D. Sand, A. Pastorello +14
We present early photometric and spectroscopic observations of SN 2013ej, a bright type IIP supernova in M74. SN 2013ej is one of the closest SNe ever discovered. The available arc…
On the progenitor of the Type IIP SN 2013ej in M74
Morgan Fraser, Justyn R. Maund, Stephen J. Smartt +10
We use natural seeing imaging of SN 2013ej in M74 to identify a progenitor candidate in archival {\it Hubble Space Telescope} + ACS images. We find a source coincident with the SN…
The Galaxy Counterparts of the two high-metallicity DLAs at z=2.412 and z=2.583 towards Q0918+1636
J. P. U. Fynbo, S. Geier, L. Christensen +9
The quasar Q0918+1636 (z=3.07) has two intervening high-metallicity Damped Lyman-alpha Absorbers (DLAs) along the line of sight, at redshifts of z=2.412 and 2.583. The z=2.583 DLA…
Spectroscopic Observations of SN 2012fr: A Luminous Normal Type Ia Supernova with Early High Velocity Features and Late Velocity Plateau
M. J. Childress, R. A. Scalzo, S. A. Sim +55
We present 65 optical spectra of the Type Ia supernova SN 2012fr, of which 33 were obtained before maximum light. At early times SN 2012fr shows clear evidence of a high-velocity f…
The Dwarf Starburst Host Galaxy of a Type Ia SN at z = 1.55 from CANDELS
Teddy F. Frederiksen, Jens Hjorth, Justyn R. Maund +4
We present VLT/X-shooter observations of a high redshift, type Ia supernova host galaxy, discovered with HST/WFC3 as part of the CANDELS Supernova project. The galaxy exhibits stro…
Red and dead: The progenitor of SN 2012aw in M95
M. Fraser, J. R. Maund, S. J. Smartt +17
Core-collapse supernovae (SNe) are the spectacular finale to massive stellar evolution. In this Letter, we identify a progenitor for the nearby core-collapse SN 2012aw in both grou…