Supernova in M101 ! Home › Forums › Variable Stars › Supernova in M101 ! Tagged: M101, Messier 101, SN2023ixf, supernova This topic has 45 replies, 14 voices, and was last updated 9 hours, 59 minutes ago by Alex Pratt. Viewing 6 posts - 41 through 46 (of 46 total) ← 1 2 3 Author Posts 26 May 2023 at 10:57 am #617528 Lars LindhardParticipant Very interesting thread. Could I make useful spectra of the SN with my StarAnalyzer 100? 26 May 2023 at 9:38 pm #617535 Robin LeadbeaterParticipant Lars Lindhard wrote: Very interesting thread. Could I make useful spectra of the SN with my StarAnalyzer 100? Yes it is certainly reachable with a Star Analyser for example https://britastro.org/observations/observation.php?id=20230523_183229_5116a1a27f78a1ea https://britastro.org/observations/observation.php?id=20230523_194606_cc526483f5e34422 but the features seen earlier have greatly reduced and at the moment even with higher resolutions it is not showing very much except a slowly cooling blue continuum. Here is the evolution with my ALPY600 https://britastro.org/specdb/data_graph.php?obs_id=13786%2C13783%2C13778%2C13774&multi=yes&legend_pos=ne Cheers Robin 26 May 2023 at 10:03 pm #617536 Robin LeadbeaterParticipant Mr Ian David Sharp wrote: It seems that the R and B are slowly swapping dominance! Yes my spectrum from last night shows it cooling further to a black body temperature of ~12000K and a fit to an A3v star continuum with a B-V = +0.1 Attachments:SN2023ixf_20230525_temperature.png 27 May 2023 at 8:02 am #617540 Mr Ian David SharpParticipant Robin Leadbeater wrote: Yes my spectrum from last night shows it cooling further to a black body temperature of ~12000K and a fit to an A3v star continuum with a B-V = +0.1 Here’s today’s RVB magnitude plot. The cooling clearly visible with the latest point B-V = +0.12. Attachments:SN2023ixf_27th_May_ids.jpg 27 May 2023 at 11:12 am #617542 Robin LeadbeaterParticipant So B mag peaked in just 5 days from the explosion on the 18th. That’s pretty fast I think, even for a type II 27 May 2023 at 7:09 pm #617549 Alex PrattParticipant Sky & Telescope’s Bob King has provided a simple overlay of M101 and the supernova onto the AAVSO chart, if it helps visual observers https://skyandtelescope.org/wp-content/uploads/SN-2023ixf-chart-AAVSO.jpg Alex. Author Posts Viewing 6 posts - 41 through 46 (of 46 total) ← 1 2 3 You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Connect with :Login with Sheep CRM Log In