« first day (4352 days earlier)      last day (341 days later) » 

3:01 AM
0
Q: How do they see BOTH "anomalously cool with a significant mid-IR excess" rather than one or the other? (SN 2023ixf progenitor)

uhohThe abstract of the arXiv preprint SN 2023ixf in Messier 101: A Variable Red Supergiant as the Progenitor Candidate to a Type II Supernova (itself recently "discovered" in the observatory) includes: Fitting to blackbody and red supergiant (RSG) spectral-energy distributions (SEDs), we find that ...

 
3:18 AM
0
Q: What are (all of the) astrophysical implications of a proposed mass of about 11 M⊙ for the SN 2023ixf progenitor?

uhohThe abstract of the arXiv preprint SN 2023ixf in Messier 101: A Variable Red Supergiant as the Progenitor Candidate to a Type II Supernova (itself recently "discovered" in the observatory) includes: We interpret this SED as reprocessed emission in a 8600 R⊙ circumstellar shell of dusty material ...

@HDE226868 I mention The Observatory as a reminder to self and to all readers to have a look here once in a while :-)
 

« first day (4352 days earlier)      last day (341 days later) »