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star formation

This tag is associated with 80 posts

Forming Stars in the Stream

Orbiting our galaxy are many smaller dwarf galaxies. As they orbit, some of these galaxies produce vast streams of gas that stretch around our Milky Way galaxy. Much of this gas still has the potential for forming stars. This astrobite will summarize a recent discovery of one of these stars.

Modeling Histories of Star Formation

The authors use a cosmological simulation to characterize the rates at which galaxies form new stars.

A star with a fake ID?

Most binary stars probably formed at the same time, meaning all stars in the same system should have the same age. The authors of this paper analyze a stellar binary system where one star appears to be lying about its age, as one star appears 3 billion years older than its companion.

Galaxy in a Bottle: Simulating Spiral Galaxy Formation

How do simulations of galaxy formation stack up against each other and against observations? Find out with the Aquila project, a comparo of many different codes in current use.

Astrophysical Classics: The Observed Relation between Star Formation and Gas in Galaxies

In today’s “astrophysical classic”, we delve into the seminal paper behind the Kennicutt-Schmidt relation, the empirical correlation between the star formation rate and gas density.

UR #10: Star Formation and Associations

The undergrad research posts continue! This month’s post discusses the movement of stars over time, and the influence of galactic bars in triggering star formation.

The Most Distant Confirmed Galaxy

The authors of this work report the discovery of the most distant, spectroscopically-confirmed galaxy found to date, which presently lies about 30 billion light years from Earth. The galaxy is being observed as it was at a time just 700 million years after the Big Bang, which is a mere 5% of the universe’s current age of 13.8 billion years.

The (not so) Sordid History of the Small Magellanic Cloud

The authors of today’s paper find out just what kind of star formation history lies in the Milky Way’s next meal: The Small Magellanic Cloud. After all, they say you are what you eat.

Enhanced star formation in interacting galaxies: how far does it reach?

Star formation is enhanced when two galaxies interact or merge. But what is the orbital extent of enhanced star formation in interacting galaxies? At which projected separation of the two galaxies does it disappear?

CMZ termination shock

Blowing Bubbles from Our Galaxy

What causes the giant radio and gamma-ray bubbles inflated from our galactic center? This paper provides another good argument for star formation as the culprit.

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