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MKT J170456.2-482100: the first transient discovered by MeerKAT
L. N. Driessen, I. McDonald, D. A. H. Buckley +19
We report the discovery of the first transient with MeerKAT, MKT J170456.2482100, discovered in ThunderKAT images of the low mass X-ray binary GX3394. MKT J170456.2482100…
Signatures of Circumstellar Interaction in the Type IIL Supernova ASASSN-15oz
K. Azalee Bostroem, Stefano Valenti, Assaf Horesh +27
Hydrogen-rich, core-collapse supernovae are typically divided into four classes: IIP, IIL, IIn, and IIb. In general, interaction with circumstellar material is only considered for…
Did the progenitor of SN2011dh have a binary companion?
J. R. Maund, I. Arcavi, M. Ergon +6
We present late-time Hubble Space Telescope (HST) ultraviolet (UV) and optical observations of the site of SN 2011dh in the galaxy M51, ~1164 days post-explosion. At the SN locatio…
Strong Ultraviolet Pulse From a Newborn Type Ia Supernova
Yi Cao, S. R. Kulkarni, D. Andrew Howell +19
Type Ia supernovae are destructive explosions of carbon oxygen white dwarfs. Although they are used empirically to measure cosmological distances, the nature of their progenitors r…
Direct evidence for a supernova interacting with a large amount of hydrogen-free circumstellar material
Sagi Ben-Ami, Avishay Gal-Yam, Paolo A. Mazzali +16
We present our observations of SN 2010mb, a Type Ic SN lacking spectroscopic signatures of H and He. SN 2010mb has a slowly-declining light curve (days) that cannot be p…
Discovery, Progenitor & Early Evolution of a Stripped Envelope Supernova iPTF13bvn
Yi Cao, Mansi M. Kasliwal, Iair Arcavi +24
The intermediate Palomar Transient Factory reports our discovery of a young supernova, iPTF13bvn, in the nearby galaxy, NGC5806 (22.5Mpc). Our spectral sequence in the optical and…
PTF1 J071912.13+485834.0: An outbursting AM CVn system discovered by a synoptic survey
David Levitan, Benjamin J. Fulton, Paul J. Groot +14
We present extensive photometric and spectroscopic observations of PTF1 J071912.13+485834.0, an outbursting AM CVn system discovered by the Palomar Transient Factory (PTF). AM CVn…