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AG CARINAE
by Emily Li
Introduction
Did you know that AG Carinae is one of the brightest stars in our Milky Way galaxy?!
What is AG Carinae?
- AG Carinae is a luminous blue variable
- Luminous blue variables are some of the most massive and brightest stars known
- They are stars that live fast and die young (A few million years)
- There are less than 50 known luminous blue variables in the galaxy
What are some of AG Carinae's most astounding features?
Astounding
Features
- AG Carinae is much brighter than the Sun
- It shines with the brilliance of 1 million suns
- It is estimated to be 70 times more massive than our Sun
- The most prominent features highlighted in blue are shaped like tadpoles and lopsided bubbles
- The nebula that surrounds the star is about five light-years wide which is about the same distance from here to the nearest star beyond the sun, Proxima Centauri
Where is AG Carinae located?
- AG Carinae is estimated to be 20,000 lightyears away inside our Milky Way galaxy
(19,570 light years)
- It is found within the constellation of Carina in the Southern Sky
Location
What is it composed of ?
Composition
- AG Carinae has a halo of gas and dust surrounding it
- The red material is glowing hydrogen gas laced with nitrogen gas
- The tadpole features are denser dust clumps that have been sculptured by the stellar wind
- The outflow of radiation and powerful stellar winds help sculpt the intricate structures of the slower-moving outer nebula
- The winds are traveling up to 670,000 miles per hour (around 1 million km/hr)
Discovery of AG Carinae
- On the Hubble Space Telescope's 31st aniversary, they aimed the observatory towards AG Carinae
- Pictures of AG Carinae were taken in visible and ultraviolet light
- Ultraviolet light offers a slightly clearer view of the filamentary dust structures
How was AG Carinae created?
- Giant eruptions around 10,000 years ago created the nebula around the star
- The expelled materials were roughly 10 times our Sun's mass
Conclusion
In Conlusion, AG Carinae is a luminous blue variable that has very unique features.
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