TY - JOUR
T1 - Identifying the SN 2022acko progenitor with JWST
AU - Van Dyk, Schuyler D.
AU - Bostroem, K. Azalee
AU - Zheng, Wei Kang
AU - Brink, Thomas G.
AU - Fox, Ori D.
AU - Andrews, Jennifer E.
AU - Filippenko, Alexei V.
AU - Dong, Yize
AU - Hoang, Emily
AU - Hosseinzadeh, Griffin
AU - Janzen, Daryl
AU - Jencson, Jacob E.
AU - Lundquist, Michael J.
AU - Meza, Nicolas
AU - Milisavljevic, Dan
AU - Pearson, Jeniveve
AU - Sand, David J.
AU - Shrestha, Manisha
AU - Valenti, Stefano
AU - Howell, D. Andrew
N1 - Publisher Copyright:
© 2023 The Author(s) .
PY - 2023/9/1
Y1 - 2023/9/1
N2 - We report on analysis using the JWST to identify a candidate progenitor star of the Type II-plateau (II-P) supernova SN 2022acko in the nearby, barred spiral galaxy NGC 1300. To our knowledge, our disco v ery represents the first time JWST has been used to localize a progenitor system in pre-explosion archi v al Hubble Space Telescope ( HST ) images. We astrometrically registered a JWST NIRCam image from 2023 January, in which the SN was serendipitously captured, to pre-SN HST F 160 W and F 814 W images from 2017 and 2004, respectively. An object corresponding precisely to the SN position has been isolated with reasonable confidence. That object has a spectral energy distribution (SED) and o v erall luminosity consistent with a single-star model having an initial mass possibly somewhat less than the canonical 8 M _theoretical threshold for core collapse (although masses as high as 9 M ⊙for the star are also possible); ho we ver, the star's SED and luminosity are inconsistent with that of a super-asymptotic giant branch star that might be a forerunner of an electron-capture SN. The properties of the progenitor alone imply that SN 2022acko is a relatively normal SN II-P, albeit most likely a low-luminosity one. The progenitor candidate should be confirmed with follow-up HST imaging at late times, when the SN has sufficiently faded. This potential use of JWST opens a new era of identifying SN progenitor candidates at high spatial resolution.
AB - We report on analysis using the JWST to identify a candidate progenitor star of the Type II-plateau (II-P) supernova SN 2022acko in the nearby, barred spiral galaxy NGC 1300. To our knowledge, our disco v ery represents the first time JWST has been used to localize a progenitor system in pre-explosion archi v al Hubble Space Telescope ( HST ) images. We astrometrically registered a JWST NIRCam image from 2023 January, in which the SN was serendipitously captured, to pre-SN HST F 160 W and F 814 W images from 2017 and 2004, respectively. An object corresponding precisely to the SN position has been isolated with reasonable confidence. That object has a spectral energy distribution (SED) and o v erall luminosity consistent with a single-star model having an initial mass possibly somewhat less than the canonical 8 M _theoretical threshold for core collapse (although masses as high as 9 M ⊙for the star are also possible); ho we ver, the star's SED and luminosity are inconsistent with that of a super-asymptotic giant branch star that might be a forerunner of an electron-capture SN. The properties of the progenitor alone imply that SN 2022acko is a relatively normal SN II-P, albeit most likely a low-luminosity one. The progenitor candidate should be confirmed with follow-up HST imaging at late times, when the SN has sufficiently faded. This potential use of JWST opens a new era of identifying SN progenitor candidates at high spatial resolution.
KW - stars: e volution -stars: massive -supernovae: general -supernov ae: indi vidual: SN 2022acko
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U2 - 10.1093/mnras/stad2001
DO - 10.1093/mnras/stad2001
M3 - Article
AN - SCOPUS:85166253743
SN - 0035-8711
VL - 524
SP - 2186
EP - 2194
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -