Biggest Star in Universe (part-2)

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Now we can continue this.

If you can't read part-1 plz go and read.

The links are here=> https://importantandbasicthings.blogspot.com/2021/08/biggest-star-in-our-universe.html

13) Mu Cephei:-

Mu Cephei, also known as Herschel's Garnet Star, Arrakis, or HD 206936, is a red supergiant or hypergiant star in the constellation Cepheus. It appears garnet red and is located at the edge of the IC 1396 nebula. 

Distance to earth: 2,838 light-years

Radius:876.6 million km (1,260 R☉)

Surface Temperature: 3,690 K

Mass: 3.819 × 10^31 kg (19.2 M☉)

Luminosity: 283,000 L☉

Spectral type: M2e la

Constelltion: Cepheus

Mu Cephei is a red supergiant located in the constellation Cepheus. With an average apparent magnitude of 4.08, it is the 10th brightest star in the constellation. Also known as Herschel's Garnet Star and notable for its striking red color, Mu Cephei is a spectral standard for its class (M2).

14) KY Cygni:-

 

KY Cygni is a red supergiant of spectral class M3.5Ia located in the constellation Cygnus. It is approximately 5,000 light-years away.

Radius: 1.0461 billion km

Distance to earth: 5,153 light years

Surface Temperature: 3,500 K

Mass: 4.972 × 10^31 kg (25 M☉)
Luminosity: 138,000 – 270,000 L_☉

Apparent magnitude(V): 11.14 (10.60 - 11.74)

Absolute magnitude: –8.18

KY Cygni is a red supergiant of spectral class M3. 5Ia is located in the constellation Cygnus. It is approximately 5,000 light-years away.

15) V354 Cephei:-

V354 Cephei is a red supergiant star located within the Milky Way. It is an irregular variable located over 8,900 light-years away from the Sun. It has an estimated radius of 685 solar spaces. If it were placed in the center of the Solar System, it would extend to between the orbits of Mars and Jupiter.

Radius: 768.7 million km (1,105 R☉)

Distance to earth: 11,420 light years

Surface Temperature: 3,650 K

Mass: 7.956 × 10^31 kg (40 M☉)

Distance: 3,400+220; −200 pc

Luminosity: 71,000 - 76,000 L_☉

Diameter: 2,210 km

16) Binary star VV Chephei:-

VV Cephei, also known as HD 208816, is an eclipsing binary star system located in the constellation Cepheus, approximately 5,000 light-years from Earth. It is both a B[e] star and shell star. VV Cephei is an eclipsing binary with the second-longest known period.

Distance to earth: 4,892 light-years

Magnitude: 5.18

Distance: 4900 ly; (1500 pc)

Temperature: 3,480 ± 176.8 K

Age: 25 Myr

Coordinates: RA 21h 56m 39s | Dec +63° 37′ 32″

The supergiant primary, known as VV Cephei A, is currently recognized as one of the largest stars in the galaxy although its size is not certain. The best estimate is 1,000 R _☉, which is nearly as large as the orbit of Jupiter.

That's because the galaxy is so huge that we can see only a small fraction of its stars. Nevertheless, there's no question that a red star named VV Cephei is one of the biggest around. VV Cephei was born about twenty times as massive as the Sun. That made it shine hot and blue.

17) Vy Canis Majoris:-

VY Canis Majoris is an extreme oxygen-rich red hypergiant or red supergiant and pulsating variable star 1.2 kiloparsecs from the solar system in the slightly southern constellation of Canis Major.

Radius: 987.89 million km

Distance to earth: 4,892 light-years

Mass: 3.381 × 10^31 kg (17 M☉)

Surface Temperature: 3,490 K

Age: 8.206 million years

Coordinates: RA 7h 22m 58s | Dec -25° 46′ 3″

The VY Canis Majoris is the largest. This red Hypergiant star, found in the constellation Canis Major, is estimated to have a radius at least 1,800 that of the Sun's. VY Canis Majoris a.k.a. VY CMa is about 4,900 light-years from the Earth.

18) VX Sagittarii:-

VX Sagittarii is an extreme asymptotic giant branch star located more than 1.5 kiloparsecs away from the Sun in the constellation of Sagittarius. It is a pulsating variable star with an unusually large magnitude range.

Distance to earth: 5,121 light-years

Magnitude: 10.03

Mass: 2.387 × 10^31 kg (12 M☉)

Radius: 1,356, between 1,120 and 1,550, 1,350–1,940 (pulsation) R☉

Temperature: 2,900 (near min), 3,200-3,400 (near max), 2,400–3,300 K

Luminosity: 195000±62000, 110,000–190,000 L☉

19) Westerland 1-26:-

Westerlund 1-26 or Wd 1-26 is a red supergiant within the outskirts of the Westerlund 1 super star cluster.

Distance to earth: 11,580 light-years

Surface Temperature: 3,600 K

Magnitude: 17.194

Radius: 1,165 ± 58 or 1,221 ± 120 R_☉

Distance: 11,500 ly; (3,550 pc)

Luminosity: 256,000 ± 40,000 or 312,000 ± 37,000 L_☉

we see hundreds of massive stars in Westerlund 1 means that it probably contains close to half a million stars, but most of these are not bright enough to peer through the obscuring cloud of gas and dust". This is ten times more than any other known young cluster in the Milky Way.

20) WOH G64:-

WOH G64 is an unusual red supergiant star in the Large Magellanic Cloud satellite galaxy in the southern constellation of Dorado.

Radius: 1.071 billion km (1,540 R☉)

Distance to Earth: 163,100 light years

Surface Temperature: 3,400 K

Mass: 4.972 × 10^31 kg (25 M☉)

Distance: 160,000 ly; (50,000 pc)

Age: ≤5 Myr

WOH G64 is a red supergiant star. It is the largest star in the Large Magellanic Cloud (LMC). It has a radius of 1,800 to over 2,400 times that of the Sun. It is one of the largest known stars.

WOH G64 is located in the Large Magellanic Cloud (LMC), a satellite galaxy of the Milky Way and the fourth largest galaxy in the Local Group, after Andromeda (M31), the Milky Way, and the Triangulum Galaxy (M33). Lying at a distance of about 163,000 light-years, the LMC is the second or third nearest galaxy to our own.

21) NML Cygni:-

NML Cygni or V1489 Cygni is a red hypergiant or red supergiant in the constellation Cygnus. It is one of the largest stars currently known by radius and is also one of the most luminous and massive cool hypergiants, as well as one of the most luminous stars in the Milky Way.

Radius: 1.141 billion km (1,640 R☉)

Distance to earth: 5,251 light-years

Mass: 9.945 × 10^31 kg (50 M☉)

Magnitude: 16.6

Luminosity: 272,000 L☉
Age: 8 Myr

Distance: 5,250+420; −360 ly; (1,610+130; −110 pc)

NML Cygni has an apparent magnitude of 16.60, this is a measure of the brightness of the star as seen from Earth. Apparent Magnitude is also known as Visual Magnitude.

22) UY Scuti:-

UY Scuti was first cataloged in 1860 by German astronomers at the Bonn Observatory, who was completing a survey of stars for the Bonner Durchmusterung Stellar Catalogue. It was designated BD-12°5055, the 5,055th star between 12°S and 13°S counting from 0h right ascension.

Radius: 1.1883 billion km

Distance to Earth: 5,219 light years

Surface Temperature: 3,365 K

Coordinates: RA 18h 27m 37s | Dec -12° 27′ 59″

Spectral type: M4la-lab
Luminosity: 340,000+290,000; −160,000 L_☉

But there are more ways than one to measure stars' bigness. In terms of sheer physical size, the star UY Scuti is considered the biggest known. Left to right: a red dwarf, the Sun, a blue dwarf, and R136a1. R136a1 is not the largest known star in terms of radius or volume, only in mass and luminosity.

I hope this makes you interesting and knowledgeable.

If anything is missing please tell me and read part-1 & 2 and gain knowledge.

Think you