A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
![]() Supernova 2023ixf as seen on 20 May 2023 05:58 UT | |
Type II-L supernova (single massive star) | |
Date | 19 May 2023 17:27[1] |
---|---|
Constellation | Ursa Major |
Right ascension | 14h 03m 38.6s[2] |
Declination | +54° 18′ 42.1″[2] |
Epoch | J2000 |
Distance | 21 Mly (6.4 Mpc)[2] |
Host | Pinwheel Galaxy (M101) NGC 5461[3] |
Progenitor | Supergiant (M=–4.66)[4] |
Peak apparent magnitude | 10.8 (on 22 May 2023)[5][6] |
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SN 2023ixf is a type II-L[7][8] (core collapse) supernova located in the Pinwheel Galaxy (M101). It was first observed on 19 May 2023 by Kōichi 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.[9] The supernova is about 21 million light-years from Earth and is expected to have left behind either a neutron star or black hole, based on current stellar evolution models.
The supernova is located near a prominent HII region, NGC 5461, in an outer spiral arm of the bright galaxy.[3]
By 22 May 2023 SN 2023ixf had brightened to about magnitude 11.[5][6] It could be seen in telescopes as small as 114 mm (4.5 in)[3] and remained visible with backyard telescopes for several months.[10] The last supernova this close to Earth was SN 2014J in Messier 82, roughly 12 million light-years from Earth. The supernova started to fade on around 10 June 2023.[11]
Supernova | Galaxy | Distance | Type | Peak apmag |
---|---|---|---|---|
SN 2023ixf | Pinwheel Galaxy (M101) | 21 Mly (6.4 Mpc) | II | 10.8 |
SN 2014J | M82 (Cigar Galaxy) | 12 Mly (3.7 Mpc) | Ia | 10.1[12] |
SN 2011fe | Pinwheel Galaxy (M101) | 21 Mly (6.4 Mpc) | Ia | 9.9[13] |
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
- ^ "Discovery certificate for object 2023ixf". Transient Name Server. Archived from the original on 2023-05-21. Retrieved 2023-05-22.
- ^ a b c d e "AstroNote 2023-119". Transient Name Server. Archived from the original on 2023-05-20. Retrieved 2023-05-20.
- ^ a b c Bob King (2023-05-22). "Bright Supernova Blazes in M101, the Pinwheel Galaxy". Sky & Telescope. Archived from the original on 2023-05-22. Retrieved 2023-05-23.
- ^ a b "Detection of candidate progenitor of SN 2023ixf in HST archival data". Astronomer's Telegram. 2023-05-23. Archived from the original on 2023-05-24. Retrieved 2023-05-24.
- ^ a b David Bishop. "2023ixf (ZTF23aaklqou)". Archived from the original on 2023-05-21. Retrieved 2023-05-22.
- ^ a b "2023-141: Amateur Follow-up observations in bands V & B". Transient Name Server.
- ^ G., Bianciardi; M., Ciccarelli A.; G., Conzo; M., D'Angelo; S., Ghia; M., Moriconi; Z., Orbanić; N., Ruocco; I., Sharp; M., Uhlár; F, Walter (2023). "Multiband Photometry Evolution in the First Weeks of SN 2023ixf, a possible II-L Subtype Supernova". Transient Name Server Astronote. 213: 1. arXiv:2307.05612. Bibcode:2023TNSAN.213....1B.
- ^ "VSX : Detail for SN 2023ixf". www.aavso.org. Retrieved 2023-07-31.
- ^ "ZTF Pre-Discovery Forced Photometry of SN 2023ixf". Transient Name Server.
- ^ Kelly Kizer Whitt (2023-05-20). "New supernova! Closest in a decade". Earthsky. Archived from the original on 2023-05-20. Retrieved 2023-05-21.
- ^ "AAVSO Magnitude Plot". AAVSO. Archived from the original on 2023-06-11.
- ^ List of supernovae sorted by Magnitude for 2014 Archived 2023-05-30 at the Wayback Machine (David Bishop)
- ^ List of supernovae sorted by Magnitude for 2011 Archived 2023-05-30 at the Wayback Machine (David Bishop)
External links
- Supernova Discovered in Nearby Spiral Galaxy M101, Astronomy Picture of the Day (NASA)
- AAVSO: magnitude plot
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