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UY Scuti
Arielle Frommer
What is UY Scuti?
Facts About UY Scuti
- UY Scuti is a red supergiant star found next to the black hole Sagittarius A located at the center of the Milky Way
- It is the largest known star in our universe and one of the most luminous red supergiant stars
- Its radius measures roughly 750,000,000 miles across; its diameter is approximately 7 AU, or 1.5 billion miles
- The temperature averages at around 3,000 degrees Kelvin (approximately 4,940 degrees Fahrenheit and 2,726 degrees Celsius)
- UY Scuti is found in the constellation Scutum
UY Scuti in Relation to our Solar System
UY Scuti in Relation to our Solar System
- The star is 9,500 light years away from the Sun (meaning it would take 9,500 years traveling at the speed of light to reach UY Scuti)
- UY Scuti is 1,708 times bigger than our Sun
- If UY Scuti were at the center of our solar system, it would extend out to Jupiter, and possibly even Saturn
- To put UY Scuti's size into context, if the Earth was 20 centimeters across, the Sun would be 20 meters across and UY Scuti would be 40 kilometers across
- Another way to put it into context is that a plane travelling the speed of light would orbit the Sun in 14.5 seconds and orbit UY Scuti in 7 hours
- UY Scuti's mass is about 30 times larger than the Sun, and its volume is 5 billion times larger than the Sun
UY Scuti in Relation to Other Stars
- UY Scuti is 1.7 times the size of Betelgeuse, and over 2.5 times the size of Antares
- UY Scuti is only slightly larger than the second largest known star, VY Canis Majoris
UY Scuti in Relation to Other Stars
https://youtu.be/cMWMtLGGg6o
Classifications
Spectral/Luminosity Class
Luminosity Class
Luminosity Class
340,000 L
MKK Luminosity Class 0
Spectral Class
M4la
Spectral Class
Strengths
Weaknesses
COMPANY
LOGO
Life Cycle
- UY Scuti began its life in a nebula, which is a giant moleular cloud of gas and dust and is the birthplace of all stars
- UY Scuti was formed when atoms in the nebula begin turning to hydrogen, and became so massive that they collapsed, caused an explosion and formed a star
- During the main sequence period of UY Scuti's life, it fused hydrogen into helium
- This process takes an extremely long time and takes up a majority of a star's life
- Once UY Scuti fused enough hydrogen, it will begin to fuse helium into carbon and grows into a red supergiant
- After it has fused all of its helium and burned throuh its fuel, UY Scuti's core will be much heavier and it will begin to die
Age of UY Scuti
- The exact age of UY Scuti is unknown
- However, UY Scuti has been fusing hydrogen for at least 1 million years and has now begun to fuse helium, meaning that it is nearing the end of its life
Age of UY Scuti
Death of UY Scuti
How will UY Scuti die?
When UY Scuti began to die, it entered the red supergiant phase and its core shrunk and became much hotter and denser. UY Scuti will evolve into either a yellow hypergiant, a luminous blue variable, or a Wolf-Rayet star. Eventually, its core will get so hot and dense that it will start fusing carbon into weaker elements: neon, oxygen, and silicon. After all the elements in UY Scuti have fused, only iron will remain at the core. The star will be so large that it cannot support itself, and its core will heat up to 100 billion degrees and collapse, electrons will be smashed into neutrons, protons, gamma rays, and neutrinos, and UY Scuti will finally explode and go supernova. When a star goes supernova, it has the brightness of one million Suns. During its supernova, UY Scuti will create a stellar wind and expel all of its outer layers and become either a neutron star or a black hole.
Luminous blue variable: the most luminous type of blue star and display unpredicable spectra and brightness
Yellow hypergiant:
a massive luminous star that is extremeky rare
Wolf-Rayet Star: the hottest known stars that exist - also have highly ionized helium and are asscoaited with nebulae
Why Is UY Scuti a Good Location For a Solar System?
Why it is the ideal location for a Solar System
Are there any existing Solar Systems?
- There have been no existing planets discovered, though it would be hard to detect a planet next to such a massive star
- The habitable zone onn UY Scuti would have to be between 700 and 1300 AU, and it would take light from the star 30 to 40 days to reach a planet
Existing Solar Systems
Benefits/Costs
Benefits/Costs
Benefits:
- The habitable zone around UY Scuti is very large so many planets could orbit UY Scuti
- Since the solar system would be at the center of the galaxy and near a black hole, scientists would have many opportunities to observe astromical wonders such as black holes up close
Costs:
- Since the star is so large and takes so long to orbit, one Earth year would last thousands of years on UY Scuti, and entire generations would pass knowing only one season
- In about one million years UY Scuti will go supernova and destroy everything in immediate vicinity
Sources
Whitworth, N. John. “UY Scuti.” Universe Guide, 5 Apr. 2016, 5:03:44 PM, www.universeguide.com/star/uyscuti.
“The Largest Star We Know.” Telescope Observer, Telescope Review Guide, 24 Jan. 2018, telescopeobserver.com/uy-scuti/.
Cai, Zheluo. “UY Scuti, The Largest Known Star.” LIVING CORAM DEO, 21 Aug. 2017, www.livingcoramdeo.com/2016/10/07/uy-scuti-largest-known-star/.
“UY Scuti.” UY Scuti, 12 Apr. 2016, ipfs.io/ipfs/QmXoypizjW3WknFiJnKLwHCnL72vedxjQkDDP1mXWo6uco/wiki/UY_Scuti.html.
“Life Cycle of a Massive Star.” Astronomy Is Awesome, 23 Aug. 2015, astronomyisawesome.com/galaxies/life-cycle-of-a-massive-star/.