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ZTF 18aaqeasu (SN2018byg): A Massive Helium-shell Double Detonation on a Sub-Chandrasekhar-mass White Dwarf

  • Authors: Kishalay De, Mansi M. Kasliwal, Abigail Polin, Peter E. Nugent, Lars Bildsten, Scott M. Adams, Eric C. Bellm, Nadia Blagorodnova, Kevin B. Burdge, Christopher Cannella, S. Bradley Cenko, Richard G. Dekany, Michael Feeney, David Hale, U. Christoffer Fremling, Matthew J. Graham, Anna Y. Q. Ho, Jacob E. Jencson, S. R. Kulkarni, Russ R. Laher, Frank J. Masci, Adam A. Miller, Maria T. Patterson, Umaa Rebbapragada, Reed L. Riddle, David L. Shupe, and Roger M. Smith

2019 The Astrophysical Journal Letters 873 L18.

  • Provider: AAS Journals

Caption: Figure 2.

Spectroscopic sequence of ZTF 18aaqeasu. Phases with respect to r-band peak and instruments used are indicated next to each spectrum. The black lines are binned from the raw spectra shown in gray lines. The magenta line at +18 days indicates the only near-infrared (NIR) spectrum of the source in Y-band from the Multi-Object Spectrometer for Infrared Exploration (MOSFIRE). The data used to create this figure are available.

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