Results tagged “star”

Stars are not perfect spheres. While they rotate, they become flat due to the centrifugal force.

By combining observations from the Japan-led Suzaku X-ray satellite and the European Space Agency's infrared Herschel Space Observatory, scientists have connected a fierce "wind" produced near a galaxy's monster black hole to an outward torrent of cold gas a thousand light-years across.

This week an international team of astronomers reports the first multiple-star system to be observed during the earliest stage of formation.

Stars' Spins Reveal Their Ages

Stars slow down as they age, and their ages are well-kept secrets. Astronomers are taking advantage of the first fact to tackle the second and tease out stellar ages.

On April 23, NASA's Swift satellite detected the strongest, hottest, and longest-lasting sequence of stellar flares ever seen from a nearby red dwarf star. The initial blast from this record-setting series of explosions was as much as 10,000 times more powerful than the largest solar flare ever recorded.

A large hot molecular cloud around a very young star was discovered by ALMA. This hot cloud is about ten times larger than those found around typical solar-mass baby stars, which indicates that the star formation process has more diversity than ever thought. This result was published in Astrophysical Journal Letters on 20 September 2013.

Magnetic Field May Shape 'Blooming' Star

An old star, IRAS 15445-5449, has begun to push out a jet of charged particles that glow with radio waves. A few old stars are known to have jets, "but this is the first one where the radio waves tell us the jet is held together by a strong magnetic field", said Dr Jessica Chapman of CSIRO Astronomy and Space Science, a member of the research team.

Betelgeuse Braces for a Collision

Multiple arcs are revealed around Betelgeuse, the nearest red supergiant star to Earth, in this new image from ESA's Herschel space observatory. The star and its arc-shaped shields could collide with an intriguing dusty 'wall' in 5000 years.

Life and Death in a Star-forming Cloud

The aftershock of a stellar explosion rippling through space is captured in this new view of supernova remnant W44, which combines far-infrared and X-ray data from ESA's Herschel and XMM-Newton space observatories.

Astronomers using data from NASA's Hubble Space Telescope have caught two clusters full of massive stars that may be in the early stages of merging. The clusters are 170,000 light-years away in the Large Magellanic Cloud, a small satellite galaxy to our Milky Way.

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