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A Linear Relation Between the Color Stretch and the Rising Color Slope of Type Ia Supernovae
Ping Chen, Subo Dong, Chris Ashall +34
Using data from the Complete Nearby () sample of Type Ia Supernovae (CNIa0.02), we discover a linear relation between two parameters derived from the color cur…
Citizen ASAS-SN Data Release I: Variable Star Classification Using Citizen Science
C. T. Christy, T. Jayasinghe, K. Z. Stanek +7
We present the first results from Citizen ASAS-SN, a citizen science project for the All-Sky Automated Survey for Supernovae (ASAS-SN) hosted on the Zooniverse platform. Citizen AS…
The Whisper of a Whimper of a Bang: 2400 Days of the Type Ia SN 2011fe Reveals the Decay of Fe
M. A. Tucker, B. J. Shappee, C. S. Kochanek +4
We analyze new multi-filter Hubble Space Telescope (HST) photometry of the normal Type Ia supernova (SN Ia) 2011fe out to days after maximum light, the latest observ…
A Rapid Ionization Change in the Nebular-Phase Spectra of the Type Ia SN 2011fe
M. A. Tucker, C. Ashall, B. J. Shappee +3
We present three new spectra of the nearby Type Ia supernova (SN Ia) 2011fe covering days after maximum light and show that the ejecta undergoes a rapid ionizatio…
How low can you go? SN 2018zd as a low-mass Fe core-collapse supernova
E. Callis, M. Fraser, A. Pastorello +38
We present spectroscopy and photometry of SN 2018zd, a Type IIP core-collapse supernova with signatures of interaction with circumstantial material in its earliest spectra. High io…
Discovery of a Highly Eccentric, Chromospherically Active Binary: ASASSN-V J192114.84+624950.8
Zachary S. Way, T. Jayasinghe, C. S. Kochanek +5
As part of an All-Sky Automated Survey for SuperNovae (ASAS-SN) search for sources with large flux decrements, we discovered a transient where the quiescent, stellar source, ASASSN…