One of the things Carina Nebula is most known for is Eta Carinae
, a system of two stars that is one of the biggest and brightest in the galaxy.
Around midnight the Southern Cross and Eta Carinae
regions beckoned irresistibly from above the southern horizon.
TEHRAN (FNA)- Long-term observations with the Hubble Space Telescope revealed that Eta Carinae
, a very massive star system that has puzzled astronomers since it erupted in a supernova-like event in the mid 19th century, has a past that's much more violent than they thought.
NASA MISSION/ETA CARINAE
: Eta Carinae
is a binary system containing the most luminous and massive star within 10,000 light-years.
But here's the truth: if you were looking out of a starship's window in the midst of the Eta Carinae
Nebula, it would look not like its dazzling Hubble panorama but about as it looks in a richest-field telescope under a rural sky.
is currently about 5th magnitude, but when observed by La Caille in the 1750s it was shining at 2.
The most famous example is Eta Carinae
, a star 7,500 light-years from Earth which, for a brief time in the mid-1800s, unleashed into space a shell of gas 10 times the mass of the sun and became the second-brightest star in the night sky.
The Carina Nebula is some 7500 lightyears from Earth and hosts some of the most massive and luminous stars in our Galaxy, including double-star system eta Carinae
, which boasts over 100 times the mass of our Sun.
Papers address high-mass star formation by gravitational collapse of massive cores, the binarity of Eta Carinae
, metallicity-dependent Wolf-Rayet winds, and an overview of cosmic infrared background and Population III, among other topics.
Instead of Alpha Orionis, Eta Carinae
, or Alpha Centauri they say Alpha Orion, Eta Carina, and (presumably) Alpha Centaurus.
At more than 100 solar masses and 4 million times the luminosity of our Sun, Eta Carinae
is one of the most massive and luminous stars in our galaxy.
Or maybe Eta Carinae
, a star 100 times more massive than the sun and 7,500 light-years away.