SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova

We present observations of ZTF18abfcmjw (SN2019dge), a helium-rich supernova with a fast-evolving light curve indicating an extremely low ejecta mass ( 0.33 M ) and low kinetic energy ( 1.3 × 1050 erg). Early-time (

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Bibliographic Details
Published in:The Astrophysical journal 2020-09, Vol.900 (1), p.46
Main Authors: Yao, Yuhan, De, Kishalay, Kasliwal, Mansi M., Ho, Anna Y. Q., Schulze, Steve, Li, Zhihui, Kulkarni, S. R., Fruchter, Andrew, Rubin, David, Perley, Daniel A., Fuller, Jim, Piro, Anthony L., Fremling, C., Bellm, Eric C., Burruss, Rick, Duev, Dmitry A., Feeney, Michael, Gal-Yam, Avishay, Golkhou, V. Zach, Graham, Matthew J., Helou, George, Kupfer, Thomas, Laher, Russ R., Masci, Frank J., Miller, Adam A., Rusholme, Ben, Shupe, David L., Smith, Roger, Sollerman, Jesper, Soumagnac, Maayane T., Zolkower, Jeffry
Format: Article
Language:English
Subjects:
Astrophysics
Binary stars
Black holes
Coalescence
Coalescing
Core-collapse supernovae
Ejecta
Emission spectra
Helium
Kinetic energy
Light curve
Line spectra
Main sequence stars
Neutron stars
Neutrons
Shock cooling
Supernova
Supernovae
Surveys
White dwarf stars
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Description
Summary:We present observations of ZTF18abfcmjw (SN2019dge), a helium-rich supernova with a fast-evolving light curve indicating an extremely low ejecta mass ( 0.33 M ) and low kinetic energy ( 1.3 × 1050 erg). Early-time (
ISSN:0004-637X
1538-4357
1538-4357
DOI:10.3847/1538-4357/abaa3d