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The SN 2023ixf Progenitor in M101: II. Properties by Van Dyk, Schuyler D.; Srinivasan, Sundar; Andrews, Jennifer E.; Soraisam, Monika; Szalai, Tamas; Howell, Steve B.; Isaacson, Howard; Matheson, Thomas; Petigura, Erik; Scicluna, Peter; Stephens, Andrew W.; Van Zandt, Judah; Zheng, WeiKang; Chun, Sang-Hyun; Filippenko, Alexei V. is a scholarly article available to read on EtoBox.

What is The SN 2023ixf Progenitor in M101: II. Properties about?

We follow our first paper with an analysis of the ensemble of the extensive pre-explosion ground- and space-based infrared observations of the red supergiant (RSG) progenitor candidate for the nearby core-collapse supernova SN 2023ixf in Messier 101, together with optical data prior to explosion obtained with the Hubble Space Telescope (HST). We have confirmed the association of the progenitor candidate with the SN, as well as constrained the metallicity at the SN site, based on SN observations with instruments at Gemini-North. The internal host extinction to the SN has also been confirmed from a high-resolution Keck spectrum. We fit the observed spectral energy distribution (SED) for the star, accounting for its intrinsic variability, with dust radiative-transfer modeling, which assume a silicate-rich dust shell ahead of the underlying stellar photosphere. The star is heavily dust-obscured, likely the dustiest progenitor candidate yet encountered. We found median estimates of the star's effective temperature and luminosity of 2770 K and 9.0e4 L_Sun, with 68% credible intervals of 2340--3150 K and (7.5--10.9)e4 L_sun. The candidate may have a Galactic RSG analog, IRC -10414, with a

Author

Van Dyk, Schuyler D.; Srinivasan, Sundar; Andrews, Jennifer E.; Soraisam, Monika; Szalai, Tamas; Howell, Steve B.; Isaacson, Howard; Matheson, Thomas; Petigura, Erik; Scicluna, Peter; Stephens, Andrew W.; Van Zandt, Judah; Zheng, WeiKang; Chun, Sang-Hyun; Filippenko, Alexei V.

Published

2023

Language

EN