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Common Envelope ejection for a Luminous Red Nova in M101
N. Blagorodnova, R. Kotak, J. Polshaw +30
We present the results of optical, near-infrared, and mid-infrared observations of M101 OT2015-1 (PSN J14021678+5426205), a luminous red transient in the Pinwheel galaxy (M101), sp…
Dead or Alive? Long-term evolution of SN 2015bh (SNhunt275)
N. Elias-Rosa, A. Pastorello, S. Benetti +37
Supernova (SN) 2015bh (or SNhunt275) was discovered in NGC 2770 on 2015 February with an absolute magnitude of Mr ~ -13.4 mag, and was initially classified as a SN impostor. Here w…
450 Days of Type II SN 2013ej in Optical and Near-Infrared
Fang Yuan, A. Jerkstrand, S. Valenti +31
We present optical and near-infrared photometric and spectroscopic observations of SN 2013ej, in galaxy M74, from 1 to 450 days after the explosion. SN 2013ej is a hydrogen-rich su…
The multi-faceted Type II-L supernova 2014G from pre-maximum to nebular phase
G. Terreran, A. Jerkstrand, S. Benetti +18
We present multi-band ultraviolet, optical, and near-infrared photometry, along with visual-wavelength spectroscopy, of supernova (SN) 2014G in the nearby galaxy NGC 3448 (25 Mpc).…
Interacting supernovae and supernova impostors. LSQ13zm: an outburst heralds the death of a massive star
L. Tartaglia, A. Pastorello, M. Sullivan +37
We report photometric and spectroscopic observations of the optical transient LSQ13zm. Historical data reveal the presence of an eruptive episode (that we label as `2013a') followe…
Optical and near infrared observations of SN 2014ck: an outlier among the Type Iax supernovae
L. Tomasella, E. Cappellaro, S. Benetti +18
We present a comprehensive set of optical and near-infrared photometric and spectroscopic observations for SN 2014ck, extending from pre-maximum to six months later. These data ind…