Possible detection of the progenitor of the Type II supernova SN2023ixf

TL;DR

This paper reports the serendipitous pre-explosion Hubble imaging of supernova SN2023ixf in galaxy M101, indicating its progenitor was a red supergiant with a low initial mass and significant dust presence.

Contribution

First direct detection and characterization of the progenitor of SN2023ixf, providing valuable data to constrain stellar evolution models.

Findings

Progenitor was a red supergiant with M(F814W)=-5.11 mag

Estimated initial mass of progenitor ~8-10 solar masses

Presence of significant dust at supernova site

Abstract

Stellar evolution theory predicts multiple pathways to the explosive deaths of stars as supernovae. Locating and characterizing the progenitors of well-studied supernovae is important to constrain the theory, and to justify and design future surveys to improve on progenitor detections. Here we report the serendipitous pre-explosion imaging, by the {\it Hubble Space Telescope}, of SN2023ixf, one of the nearest extragalactic supernovae ever discovered, in the galaxy M101. The extremely red color and absolute magnitude M(F814W)=-5.11(+0.65/-0.47)mag suggest that the progenitor was a red supergiant. Comparison with stellar evolutionary isochrones suggests it is within the relatively low initial mass range of ~8-10Msun and that there is likely a lot of dust present at the supernova site.