It is one of the most famous, bright stars in our galaxy, known for its strong red tint. And now scientists have used ESO's Very Large Telescope (VLTI) to capture the most detailed image of Antares yet
Posted on 08/23/2017 8:56:02 AM PDT by C19fan
It is one of the most famous, bright stars in our galaxy, known for its strong red tint. And now scientists have used ESO's Very Large Telescope (VLTI) to capture the most detailed image of Antares yet. The stunning image reveals a mysterious process occurring in Antares' extended atmosphere - which the researchers still cannot explain.
(Excerpt) Read more at dailymail.co.uk ...
Astronomers Release Most Detailed Image of a Star That’s Not the Sun
Betelgeuse is a huge red supergiant, so we can get pretty good images of the enormous star.
TTIUWP
It is one of the most famous, bright stars in our galaxy, known for its strong red tint. And now scientists have used ESO's Very Large Telescope (VLTI) to capture the most detailed image of Antares yet
Impressive we have telescopes capable of picking up such surface detail from a distance of 555 light years, even if Antares is the diameter of our inner Solar system! :-0
Betelgeuse is a red supergiant with a radius that stretches more than 600 million miles, about 1,400 times the radius of the sun. That gives Betelgeuse more than one billion times the volume of our host star. If the enormous star were at the center of our solar system, it would engulf every planet and asteroid out to beyond Jupiter.
Based on the image, the only thing it has in common with our sun is that it appears to be round.
the differences in brightness almost seem to have a pattern.
These are red giant stars which, due to their size, are very easy to see with telescopic magnification. G-class main sequence stars, like our sun, would be much harder to at these distances (500+ LY). I’m surprised we don’t have pictures like this of other closer main sequence stars like Proxima Centauri.
Proxima Centauri is a class M dwarf star that is about 200,000 km in diameter. At 4.25 light years that gives it an angular diameter of about one mili-arcsecond. Antares has an angular diameter that is 41 times greater.
For comparison, Jupiter is about 140,000 km in diameter so you are actually looking at something that is more the size of a large planet than the sun which is 1.4 million km in diameter.
Wow ... the fact that they have resolved any detail at all on it is astonishing.
Proxima Centauri is a red dwarf..................
When you have a star that if it were our sun would engulf everything out to the orbit of MARS is understandable.
Betelgeuse would go out to the orbit of Jupiter.........................
Time to sing
Beyond Anares
The skies are green and glowing,
Where my heart is, where my heart is,
Where the scented lunar flower is blooming:
Somewhere, beyond the stars...
Beyond Antares.
I’ll be back, though it takes forever.
Forever is just a day.
Forever is just another journey.
Tomorrow a stop along the way.
Then let the years go fading,
Where my heart is, where my heart is,
Where my love eternally is waiting
Somewhere, beyond the stars...
Beyond Antares.
Beyond Antares
Still a main sequence star. Our star is commonly referred to as a yellow dwarf.
That’s racist!............................
Obviously. a nazi.
Looks out of focus to me.
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