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SN 2023ixf

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This is an old revision of this page, as edited by TowardsTheLight (talk | contribs) at 19:35, 24 May 2023 (Added a clarification that the progenitor's estimated absolute magnitude is in the near-infrared. This complicates interpreting how bright it would appear at a distance of 10pc. The reference at The Astronomer's Telegram does not specify whether this is on the "Vega" system or is an AB magnitude. Giving an estimate of the visual magnitude would require using a colour index. Those estimates have therefore been deleted.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

SN 2023ixf
Supernova 2023ixf as seen on 20 May 2023 05:58 UT
Type II (single massive star)
Date19 May 2023 17:27[1]
ConstellationUrsa Major, Big Dipper
Right ascension14h 03m 38.6s[2]
Declination+54° 18′ 42.1″[2]
EpochJ2000
Distance21 Mly (6.4 Mpc)[2]
HostPinwheel Galaxy (M101)
NGC 5461[3]
ProgenitorSupergiant (M=–4.66)[4]
Peak apparent magnitude10.8 (as of 22 May 2023)[5]
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SN 2023ixf is a type II (core collapse) supernova located in the Pinwheel Galaxy (M101). It was first observed on May 19, 2023 by Koichi Itagaki and immediately classified as a type II supernova.[2] Initial magnitude at discovery was 14.9.[2] After discovery, the Zwicky Transient Facility project found a precovery image of the supernova at magnitude 15.87 two days before discovery.[6] The supernova is about 21 million light-years from Earth and will leave behind either a neutron star or black hole.

The supernova is located near a prominent HII region, NGC 5461, in an outer spiral arm of the bright galaxy.[3]

SN 2023ixf can be seen in telescopes as small as 114 mm (4.5 in)[3] and should remain visually visible with backyard telescopes for a few months.[7] The last supernova this close to Earth was SN 2014J in Messier 82 roughly 12 million light-years from Earth.

Before becoming a supernova, the progenitor star is believed to have been a supergiant with an absolute magnitude in the near-infrared (814nm) of MF814W = –4.66.[4]

References

  1. ^ "Discovery certificate for object 2023ixf". Transient Name Server.
  2. ^ a b c d e "AstroNote 2023-119". Transient Name Server.
  3. ^ a b c Bob King (2023-05-22). "Bright Supernova Blazes in M101, the Pinwheel Galaxy". Sky & Telescope. Retrieved 2023-05-23.
  4. ^ a b "Detection of candidate progenitor of SN 2023ixf in HST archival data". Astronomer's Telegram. 2023-05-23.
  5. ^ David Bishop. "2023ixf (ZTF23aaklqou)". Retrieved 2023-05-22.
  6. ^ "ZTF Pre-Discovery Forced Photometry of SN 2023ixf". Transient Name Server.
  7. ^ Kelly Kizer Whitt (2023-05-20). "New supernova! Closest in a decade". Earthsky. Retrieved 2023-05-21.


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