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10 papers · 2 filters
Carnegie Supernova Project-II: Near-infrared Spectroscopy of Stripped-Envelope Core-Collapse Supernovae
M. Shahbandeh, E. Y. Hsiao, C. Ashall +29
We present 75 near-infrared (NIR; 0.82.5 m) spectra of 34 stripped-envelope core-collapse supernovae (SESNe) obtained by the Carnegie Supernova Project-II (CSP-II), encompass…
A Tale of Two Type Ia Supernovae: The fast-declining siblings SNe 2015bo and 1997cn
W. B. Hoogendam, C. Ashall, L. Galbany +18
We present optical and near-infrared photometric and spectroscopic observations of the fast-declining Type Ia Supernova (SN) 2015bo. SN 2015bo is under-luminous (M = -17.67 $\p…
SN2017jgh - A high-cadence complete shock cooling lightcurve of a SN IIb with the Kepler telescope
P. Armstrong, B. E. Tucker, A. Rest +69
SN 2017jgh is a type IIb supernova discovered by Pan-STARRS during the C16/C17 campaigns of the Kepler/K2 mission. Here we present the Kepler/K2 and ground based observations of SN…
A puzzle solved after two decades: SN 2002gh among the brightest of superluminous supernovae
Régis Cartier, Mario Hamuy, Carlos Contreras +9
We present optical photometry and spectroscopy of the superluminous SN 2002gh from maximum light to days, obtained as part of the Carnegie Type II Supernova (CATS) project.…
Hunting for the nature of the enigmatic narrow-line Seyfert 1 galaxy PKS 2004-447
M. Berton, G. Peluso, P. Marziani +19
Narrow-line Seyfert 1 (NLS1) galaxies are a class of active galactic nuclei (AGN) that, in some cases, can harbor powerful relativistic jets. One of them, PKS 2004-447, shows gamma…
ASASSN-15hy: an under-luminous, red 03fg-like type Ia supernova
J. Lu, C. Ashall, E. Y. Hsiao +33
We present photometric and spectroscopic observations of the 03fg-like type Ia supernova (SN Ia) ASASSN-15hy from the ultraviolet (UV) to the near-infrared (NIR). ASASSN-15hy share…