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The story of SN 2021aatd -- a peculiar 1987A-like supernova with an early-phase luminosity excess
T. Szalai, R. Könyves-Tóth, A. P. Nagy +20
There is a growing number of peculiar events that cannot be assigned to any of the main supernova (SN) classes. SN 1987A and a handful of similar objects, thought to be explosive o…
Keck Infrared Transient Survey I: Survey Description and Data Release 1
S. Tinyanont, R. J. Foley, K. Taggart +35
We present the Keck Infrared Transient Survey (KITS), a NASA Key Strategic Mission Support program to obtain near-infrared (NIR) spectra of astrophysical transients of all types, a…
Observations of the luminous red nova AT 2021biy in the nearby galaxy NGC 4631
Y. -Z. Cai, A. Pastorello, M. Fraser +73
We present an observational study of the luminous red nova (LRN) AT\,2021biy in the nearby galaxy NGC\,4631. The field of the object was routinely imaged during the pre-eruptive st…
Early observations of the nearby type Ia supernova SN 2015F
R. Cartier, M. Sullivan, R. Firth +25
We present photometry and time-series spectroscopy of the nearby type Ia supernova (SN Ia) SN 2015F over days to days relative to maximum light, obtained as part of the…
Optical and Ultraviolet Observations of the Very Young Type IIP SN 2014cx in NGC 337
Fang Huang, Xiaofeng Wang, Luca Zampieri +15
Extensive photometric and spectroscopic observations are presented for SN 2014cx, a type IIP supernova (SN) exploding in the nearby galaxy NGC 337. The observations are performed i…