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34 papers · 2 filters
The influence of late-stage nuclear burning on red supergiant supernova light curves
Viktoriya Morozova, Anthony L. Piro, Jim Fuller +1
Many Type II supernovae (SNe) show hot early (~30 days) emission, and a diversity in their light curves extending from the Type IIP to the Type IIL, which can be explained by inter…
LSQ13ddu: A rapidly-evolving stripped-envelope supernova with early circumstellar interaction signatures
Peter Clark, Kate Maguire, Cosimo Inserra +30
This paper describes the rapidly evolving and unusual supernova LSQ13ddu, discovered by the La Silla-QUEST survey. LSQ13ddu displayed a rapid rise of just 4.80.9 d to reach a…
The Carnegie Supernova Project II. Early observations and progenitor constraints of the Type Ib supernova LSQ13abf
M. D. Stritzinger, F. Taddia, S. Holmbo +19
Supernova LSQ13abf was discovered soon after explosion by the La Silla-QUEST Survey and followed by the CSP II at optical and near-IR wavelengths. Our analysis indicates LSQ13abf w…
Carnegie Supernova Project-II: Near-infrared Spectroscopic Diversity of Type II Supernovae
S. Davis, E. Y. Hsiao, C. Ashall +24
We present near-infrared (NIR) spectra of Type II supernovae (SNe II) from the Carnegie Supernova Project-II (CSP-II), the largest such dataset published to date. We iden…
Ca hnk: Calcium-rich Transient SN 2016hnk from the Helium Shell Detonation of a Sub-Chandrasekhar White Dwarf
Wynn V. Jacobson-Galán, Abigail Polin, Ryan J. Foley +11
We present observations and modeling of SN 2016hnk, a Ca-rich supernova (SN) that is consistent with being the result of a He-shell double-detonation explosion of a C/O white dwarf…
Luminous Type II supernovae for their low expansion velocities
Ó. Rodríguez, G. Pignata, J. P. Anderson +27
We present optical and near-IR data of three Type II supernovae (SNe II), SN 2008bm, SN 2009aj, and SN 2009au. These SNe display the following common characteristics: signs of earl…