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A Hubble diagram from Type II Supernovae based solely on photometry: the Photometric-Colour Method
T. de Jaeger, S. González-Gaitán, J. P. Anderson +20
We present a Hubble diagram of type II supernovae using corrected magnitudes derived only from photometry, with no input of spectral information. We use a data set from the Carnegi…
An Excess of Mid-Infrared Emission from the Type Iax SN 2014dt
Ori D. Fox, Joel Johansson, Mansi Kasliwal +12
Supernovae Type Iax (SNe Iax) are less energetic and less luminous than typical thermonuclear explosions. A suggested explanation for the observed characteristics of this subclass…
The Double-Peaked SN2013ge: a Type Ib/c SN with an Asymmetric Mass Ejection or an Extended Progenitor Envelope
M. R. Drout, D. Milisavljevic, J. Parrent +17
We present extensive observations of the Type Ib/c SN2013ge from -13 to +457 days, including spectra and Swift UV-optical photometry beginning 2-4 days post-explosion. This data se…
Searching for light echoes due to CSM in SN Ia spectra
Sebastián Marino, Santiago González-Gaitán, Francisco Förster +3
We present an analytical model for light echoes (LEs) coming from circumstellar material (CSM) around Type Ia Supernovae (SNe Ia). Using this model we find two spectral signatures…
Diversity in extinction laws of Type Ia supernovae measured between and
R. Amanullah, J. Johansson, A. Goobar +36
We present ultraviolet (UV) observations of six nearby Type~Ia supernovae (SNe~Ia) obtained with the Hubble Space Telescope, three of which were also observed in the near-IR (NIR)…
Supernova 2013by: A Type IIL Supernova with a IIP-like light curve drop
S. Valenti, D. Sand, M. Stritzinger +11
We present multi-band ultraviolet and optical light curves, as well as visual-wavelength and near-infrared spectroscopy of the Type II linear (IIL) supernova (SN) 2013by. We show t…