When you look at a region of the sky where stars are born, you see a cloud of gas and dust and a bunch of stars.In most places, the stars all end up being about the same mass. That mass is probably the most important factor you want to know about it. It directs how long the star will live and what its future will be like.
Years of observations show that no matter where we look in our galaxy, stars in clusters have similar masses. They could be clusters of sun-like stars all the way up to groupings of massive stellar behemoths. And, this is true whether they’re hot and young in the modern epoch, or are billions of years old. Astronomers at the University of Texas at Austin wanted to know how that could be. So, they set up a set of simulations, along with colleagues in California, Illinois, and Massachusetts.
The Orion Nebula is one of the closest star formation regions from Earth at a distance of 1,500 light years. Orion is seen here in a composite image created from Chandra and Hubble data. The wispy filaments seen by Hubble are clouds of gas and dust that provide the material used as fuel by young stars. The bright point-like sources are newly formed stars captured in X-ray light by Chandra. Simulations may now explain the masses of these newly formed stars.
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