SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova

Yuhan Yao; Kishalay De; Mansi M. Kasliwal; Anna Y.Q. Ho; Steve Schulze; Zhihui Li; S. R. Kulkarni; Andrew Fruchter; David Rubin; Daniel A. Perley; Jim Fuller; Anthony L. Piro; C. Fremling; Eric C. Bellm; Rick Burruss; Dmitry A. Duev; Michael Feeney; Avishay Gal-Yam; V. Zach Golkhou; Matthew J. Graham; George Helou; Thomas Kupfer; Russ R. Laher; Frank J. Masci; Adam A. Miller; Ben Rusholme; David L. Shupe; Roger Smith; Jesper Sollerman; Maayane T. Soumagnac; Jeffry Zolkower

doi:10.3847/1538-4357/abaa3d

SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova

Yuhan Yao, Kishalay De, Mansi M. Kasliwal, Anna Y.Q. Ho, Steve Schulze, Zhihui Li, S. R. Kulkarni, Andrew Fruchter, David Rubin, Daniel A. Perley, Jim Fuller, Anthony L. Piro, C. Fremling, Eric C. Bellm, Rick Burruss, Dmitry A. Duev, Michael Feeney, Avishay Gal-Yam, V. Zach Golkhou, Matthew J. GrahamGeorge Helou, Thomas Kupfer, Russ R. Laher, Frank J. Masci, Adam A. Miller, Ben Rusholme, David L. Shupe, Roger Smith, Jesper Sollerman, Maayane T. Soumagnac, Jeffry Zolkower

Department of Particle Physics and Astrophysics

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

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 o˙) and low kinetic energy (≈1.3 1050 erg). Early-time (<4 days after explosion) photometry reveals evidence of shock cooling from an extended helium-rich envelope of ∼0.1 M o˙ located ∼1.2 1013 cm from the progenitor. Early-time He II line emission and subsequent spectra show signatures of interaction with helium-rich circumstellar material, which extends from ⪆5 1013 cm to ⪆2 1016 cm. We interpret SN2019dge as a helium-rich supernova from an ultra-stripped progenitor, which originates from a close binary system consisting of a mass-losing helium star and a low-mass main-sequence star or a compact object (i.e., a white dwarf, a neutron star, or a black hole). We infer that the local volumetric birth rate of 19dge-like ultra-stripped SNe is in the range of 1400-8200 (i.e., 2%-12% of core-collapse supernova rate). This can be compared to the observed coalescence rate of compact neutron star binaries that are not formed by dynamical capture.

Original language	English
Article number	46
Number of pages	24
Journal	Astrophysical Journal
Volume	900
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/abaa3d
State	Published - 1 Sep 2020

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4357/abaa3d

https://arxiv.org/abs/2005.12922License: Other

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Yao, Y., De, K., Kasliwal, M. M., Ho, A. Y. Q., Schulze, S., Li, Z., Kulkarni, S. R., Fruchter, A., Rubin, D., Perley, D. A., Fuller, J., Piro, A. L., Fremling, C., Bellm, E. C., Burruss, R., Duev, D. A., Feeney, M., Gal-Yam, A., Golkhou, V. Z., ... Zolkower, J. (2020). SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova. Astrophysical Journal, 900(1), Article 46. https://doi.org/10.3847/1538-4357/abaa3d

@article{b7a8f3b11ec84971a387de4be56822cd,

title = "SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova",

abstract = "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 o˙) and low kinetic energy (≈1.3 1050 erg). Early-time (<4 days after explosion) photometry reveals evidence of shock cooling from an extended helium-rich envelope of ∼0.1 M o˙ located ∼1.2 1013 cm from the progenitor. Early-time He II line emission and subsequent spectra show signatures of interaction with helium-rich circumstellar material, which extends from ⪆5 1013 cm to ⪆2 1016 cm. We interpret SN2019dge as a helium-rich supernova from an ultra-stripped progenitor, which originates from a close binary system consisting of a mass-losing helium star and a low-mass main-sequence star or a compact object (i.e., a white dwarf, a neutron star, or a black hole). We infer that the local volumetric birth rate of 19dge-like ultra-stripped SNe is in the range of 1400-8200 (i.e., 2%-12% of core-collapse supernova rate). This can be compared to the observed coalescence rate of compact neutron star binaries that are not formed by dynamical capture.",

author = "Yuhan Yao and Kishalay De and Kasliwal, {Mansi M.} and Ho, {Anna Y.Q.} and Steve Schulze and Zhihui Li and Kulkarni, {S. R.} and Andrew Fruchter and David Rubin and Perley, {Daniel A.} and Jim Fuller and Piro, {Anthony L.} and C. Fremling and Bellm, {Eric C.} and Rick Burruss and Duev, {Dmitry A.} and Michael Feeney and Avishay Gal-Yam and Golkhou, {V. Zach} and Graham, {Matthew J.} and George Helou and Thomas Kupfer and Laher, {Russ R.} and Masci, {Frank J.} and Miller, {Adam A.} and Ben Rusholme and Shupe, {David L.} and Roger Smith and Jesper Sollerman and Soumagnac, {Maayane T.} and Jeffry Zolkower",

year = "2020",

month = sep,

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doi = "10.3847/1538-4357/abaa3d",

language = "الإنجليزيّة",

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Yao, Y, De, K, Kasliwal, MM, Ho, AYQ, Schulze, S, Li, Z, Kulkarni, SR, Fruchter, A, Rubin, D, Perley, DA, Fuller, J, Piro, AL, Fremling, C, Bellm, EC, Burruss, R, Duev, DA, Feeney, M, Gal-Yam, A, Golkhou, VZ, Graham, MJ, Helou, G, Kupfer, T, Laher, RR, Masci, FJ, Miller, AA, Rusholme, B, Shupe, DL, Smith, R, Sollerman, J, Soumagnac, MT & Zolkower, J 2020, 'SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova', Astrophysical Journal, vol. 900, no. 1, 46. https://doi.org/10.3847/1538-4357/abaa3d

TY - JOUR

T1 - SN2019dge

T2 - A Helium-rich Ultra-stripped Envelope Supernova

AU - Yao, Yuhan

AU - De, Kishalay

AU - Kasliwal, Mansi M.

AU - Ho, Anna Y.Q.

AU - Schulze, Steve

AU - Li, Zhihui

AU - Kulkarni, S. R.

AU - Fruchter, Andrew

AU - Rubin, David

AU - Perley, Daniel A.

AU - Fuller, Jim

AU - Piro, Anthony L.

AU - Fremling, C.

AU - Bellm, Eric C.

AU - Burruss, Rick

AU - Duev, Dmitry A.

AU - Feeney, Michael

AU - Gal-Yam, Avishay

AU - Golkhou, V. Zach

AU - Graham, Matthew J.

AU - Helou, George

AU - Kupfer, Thomas

AU - Laher, Russ R.

AU - Masci, Frank J.

AU - Miller, Adam A.

AU - Rusholme, Ben

AU - Shupe, David L.

AU - Smith, Roger

AU - Sollerman, Jesper

AU - Soumagnac, Maayane T.

AU - Zolkower, Jeffry

PY - 2020/9/1

Y1 - 2020/9/1

N2 - 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 o˙) and low kinetic energy (≈1.3 1050 erg). Early-time (<4 days after explosion) photometry reveals evidence of shock cooling from an extended helium-rich envelope of ∼0.1 M o˙ located ∼1.2 1013 cm from the progenitor. Early-time He II line emission and subsequent spectra show signatures of interaction with helium-rich circumstellar material, which extends from ⪆5 1013 cm to ⪆2 1016 cm. We interpret SN2019dge as a helium-rich supernova from an ultra-stripped progenitor, which originates from a close binary system consisting of a mass-losing helium star and a low-mass main-sequence star or a compact object (i.e., a white dwarf, a neutron star, or a black hole). We infer that the local volumetric birth rate of 19dge-like ultra-stripped SNe is in the range of 1400-8200 (i.e., 2%-12% of core-collapse supernova rate). This can be compared to the observed coalescence rate of compact neutron star binaries that are not formed by dynamical capture.

AB - 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 o˙) and low kinetic energy (≈1.3 1050 erg). Early-time (<4 days after explosion) photometry reveals evidence of shock cooling from an extended helium-rich envelope of ∼0.1 M o˙ located ∼1.2 1013 cm from the progenitor. Early-time He II line emission and subsequent spectra show signatures of interaction with helium-rich circumstellar material, which extends from ⪆5 1013 cm to ⪆2 1016 cm. We interpret SN2019dge as a helium-rich supernova from an ultra-stripped progenitor, which originates from a close binary system consisting of a mass-losing helium star and a low-mass main-sequence star or a compact object (i.e., a white dwarf, a neutron star, or a black hole). We infer that the local volumetric birth rate of 19dge-like ultra-stripped SNe is in the range of 1400-8200 (i.e., 2%-12% of core-collapse supernova rate). This can be compared to the observed coalescence rate of compact neutron star binaries that are not formed by dynamical capture.

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U2 - 10.3847/1538-4357/abaa3d

DO - 10.3847/1538-4357/abaa3d

M3 - مقالة

SN - 0004-637X

VL - 900

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 46

ER -

SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova

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