Response to the reader

Vannini, Phillip; Vannini, April

doi:10.1111/area.12588

Cited by 1 publication

(1 citation statement)

References 2 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After the discovery and classification reports, we initiated immediate photometric follow-up of SN 2023ixf using the Panchromatic Robotic Optical Monitoring and Polarimetry Telescope (Reichart et al 2005) (Gehrels et al 2004). We also include additional observations carried out using Las Cumbres Observatory's 0.4 m telescopes under education and public outreach programs, some of which were first reported by Vannini (2023aVannini ( , 2023bVannini ( , 2023c.…”

Section: Photometric Follow-up and Data Reductionmentioning

confidence: 99%

Shock Cooling and Possible Precursor Emission in the Early Light Curve of the Type II SN 2023ixf

Hosseinzadeh

Farah

Shrestha

et al. 2023

ApJL

View full text Add to dashboard Cite

We present the densely sampled early light curve of the Type II supernova (SN) 2023ixf, first observed within hours of explosion in the nearby Pinwheel Galaxy (Messier 101; 6.7 Mpc). Comparing these data to recently updated models of shock-cooling emission, we find that the progenitor likely had a radius of 410 ± 10 R ⊙. Our estimate is model dependent but consistent with a red supergiant. These models provide a good fit to the data starting about 1 day after the explosion, despite the fact that the classification spectrum shows signatures of circumstellar material around SN 2023ixf during that time. Photometry during the first day after the explosion, provided almost entirely by amateur astronomers, does not agree with the shock-cooling models or a simple power-law rise fit to data after 1 day. We consider the possible causes of this discrepancy, including precursor activity from the progenitor star, circumstellar interaction, and emission from the shock before or after it breaks out of the stellar surface. The very low luminosity (−11 mag > M > −14 mag) and short duration of the initial excess lead us to prefer a scenario related to prolonged emission from the SN shock traveling through the progenitor system.

show abstract

Section: Photometric Follow-up and Data Reductionmentioning

confidence: 99%