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Luminous Red Nova AT 2019zhd, a new merger in M 31
A. Pastorello, M. Fraser, G. Valerin +20
We present the follow-up campaign of the luminous red nova (LRN) AT~2019zhd, the third event of this class observed in M 31. The object was followed by several sky surveys for abou…
Revisiting the progenitor of the low-luminosity type II-plateau supernova, SN 2008bk
D. O'Neill, R. Kotak, M. Fraser +3
The availability of updated model atmospheres for red supergiants and improvements in single and binary stellar evolution models, as well as previously unpublished data prompted us…
SN 2018gjx reveals that some SNe Ibn are SNe IIb exploding in dense circumstellar material
S. J. Prentice, K. Maguire, I. Boian +27
We present the data and analysis of SN 2018gjx, an unusual low-luminosity transient with three distinct spectroscopic phases. Phase I shows a hot blue spectrum with signatures of i…
SN 2017ivv: two years of evolution of a transitional Type II supernova
C. P. Gutiérrez, A. Pastorello, A. Jerkstrand +39
We present the photometric and spectroscopic evolution of the Type II supernova (SN II) SN 2017ivv (also known as ASASSN-17qp). Located in an extremely faint galaxy (M ma…
PS15cey and PS17cke: prospective candidates from the Pan-STARRS Search for Kilonovae
Owen R. McBrien, Stephen J. Smartt, Mark E. Huber +22
Time domain astronomy was revolutionised with the discovery of the first kilonova, AT2017gfo, in August 2017 which was associated with the gravitational wave signal GW170817. Since…
AT 2017gbl: a dust obscured TDE candidate in a luminous infrared galaxy
E. C. Kool, T. M. Reynolds, S. Mattila +26
We present the discovery with Keck of the extremely infrared (IR) luminous transient AT 2017gbl, coincident with the Northern nucleus of the luminous infrared galaxy (LIRG) IRAS 23…