Astronomy:List of supernova candidates

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This is a list of supernova candidates, or stars that astronomers have suggested are supernova progenitors. Type II supernova progenitors include stars with at least 10 solar masses that are in the final stages of their evolution. Prominent examples of stars in this mass range include Antares, Spica,[1] Gamma Velorum,[2] Mu Cephei, and members of the Quintuplet Cluster.[3] Type Ia supernova progenitors are white dwarf stars that are close to the Chandrasekhar limit of about 1.44 solar masses and are accreting matter from a binary companion star. The list includes massive Wolf–Rayet stars, which may become Type Ib/Ic supernovae.

Supernova progenitor candidates
Identifier Epoch J2000 Constellation Distance
(light years)
Spectral
class
Possible supernova

type

Notes
R. A. Dec.
IK Pegasi  21h 26m 26.7s +19° 22′ 32″ Pegasus 154.4±1.0[4] A8m:/DA Ia [5][6][7]
Spica  13h 25m 11.6s −11° 09′ 40.8″ Virgo 250+14
−13
[8]
B1 [7]
Alpha Lupi  14h 41m 55.8s –47° 23′ 17″ Lupus 465+12
−11
[8]
B1.5 II [9][7]
Antares  16h 29m 24.5s –26° 25′ 55″ Scorpius 554+113
−80
[8]
M1.5Iab-b IIP [10][7]
Betelgeuse  05h 55m 10.3s +07° 24′ 25″ Orion 720+160
−110
[11]
M2Iab IIP [1][12][7]
Rigel  05h 14m 32.3s –08° 12′ 06″ Orion 1118+30
−28
[4]
B8Ia IIn(pec?) [13][7]
Gamma2 Velorum  08h 09m 32.0s −47° 20′ 12″ Vela 1120+130
−100
[8]
WC8+O7.5III Ib/Ic [14]
T Coronae Borealis  15h 59m 30.2s +25° 55′ 13″ Corona Borealis 2690+110
−100
[4]
M3III/D Ia [15]
KPD 1930+2752  19h 32m 14.9s +27° 58′ 35″ Cygnus 2860+130
−120
[4]
sdB/D Ia [nb 1][16][17]
Rho Cassiopeiae  23h 54m 23.0s +57° 29′ 58″ Cassiopeia 3440+930
−610
[4]
G2Ia0e IIL [18]
VY Canis Majoris  07h 22m 58.3s −25° 46′ 03″ Canis Major 3930+420
−350
[19]
M5eIa II [12][20]
IRAS 17163-3907  17h 19m 49.3s −39° 10′ 37.9″ Scorpius 3930+990
−660
[4]
late B/early A II [21]
HD 168625  18h 21m 19.5s −16° 22′ 26″ Sagittarius 5250+600
−490
[4]
B6Ia II [22]
NML Cygni  20h 46m 25.6s +40° 06′ 59.4″ Cygnus 5250+420
−360
[23]
M6I II [24]
WR 142  20h 21m 44.34s +37° 22′ 30.4″ Cygnus 5380 WO2 Ic, Grb likely
IRC +10420  19h 26m 48.1s +11° 21′ 17″ Aquila 5600+2200
−1200
[4]
F8Ia+ IIb [25][26]
Mu Cephei  21h 43m 30.5s +58° 46′ 48″ Cepheus 5900+3400
−1600
[8]
M2Ia IIn/IIb [27]
RS Ophiuchi  17h 50m 13.2s –06° 42′ 28″ Ophiuchus 7380+1000
−790
[4]
M2III/D Ia [28][29]
WR 93b  17h 32m 03.31s –35° 04′ 32.7″ Scorpius 7470 WO3 Ic
WR 2  01h 05m 23.03s +60° 25′ 18.9″ Cassiopeia 7830 WN2-w Ib/Ic, Grb likely
WR 102  17h 45m 47.54s –26° 10′ 26.8″ Sagittarius 8610 WO2 Ic
Eta Carinae  10h 45m 03.6s −59° 41′ 04″ Carina 8630+69
−68
[4]
LBV/O Ib [30][31]
HD 179821  19h 13m 58.6s +00° 07′ 32″ Aquila 10500+2100
−1500
[4]
G5Ia IIL [32][33]
T Pyxidis  09h 04m 41.5s −32° 22′ 48″ Pyxis 10700+1700
−1300
[4]
Ia [34][35]
WR 104  18h 02m 04.1s –23° 37′ 41″ Sagittarius 13400+9200
−3900
[4]
WC9d/OB Ib/Ic with Grb? [36][37]
V445 Puppis  07h 37m 56.9s –25° 56′ 59″ Puppis 16000+5200
−4600
[38]
Ia [39]
WR 38  11h 05m 46.43s −61° 13′ 48.6″ Carina 19 700 WC4 Ic
WR 30a  10h 51m 38.89s −60° 56′ 34.9″ Carina 21 900 WO4+O5-5.5 Ic
Sher 25  11h 15m 07.8s −61° 15′ 17″ Carina 43500+5200
−4200
[4]
B1.5Iab [40]
U Scorpii  16h 22m 30.7s –17° 52′ 42″ Scorpius 64000+68000
−17000
[41]
Ia [42]

Notes

  1. The Kitt Peak Downes star.

References

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