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Runaway Stars

All articles tagged with #runaway stars

astronomy2 years ago•2 min saved

Mass Exodus: Massive Stars Abandon Milky Way Galaxy

Dozens of enormous stars are defying the cosmic synchrony of the Milky Way galaxy and hurtling into intergalactic space, according to a study utilizing data from the Gaia spacecraft. The research identified 106 O-type and 69 Be-type runaway stars, with an estimated total of ten million stars fleeing the galaxy. The two prevailing theories for their escape are the dynamical ejection scenario (DES) and the binary supernova scenario (BSS), with the study leaning towards DES. Understanding the mechanisms behind these runaway stars provides insights into star formation, the evolution of stars, and the architecture of the Milky Way.

via Giant Freakin Robot|

#astronomy #binary-supernova-scenario #dynamical-ejection-theory

astronomy2 years ago•6 min saved

Massive Stars on the Run: Astronomers Discover Milky Way Escapees

Astronomers have discovered dozens of massive stars that are fleeing the Milky Way. These runaway stars, which have significant peculiar velocities, were identified through a combination of data from the Gaia spacecraft and two stellar catalogues. The study found that a higher percentage of O-type stars, which are young and hot, are runaway stars compared to Be-type stars. The findings suggest that the dynamical ejection scenario, involving gravitational interactions in densely packed regions, is more likely than the binary supernova scenario in explaining the phenomenon of runaway stars.

via Phys.org|

#astronomy #astrophysics #gaia

astronomy2 years ago•5 min saved

Milky Way Witnesses Mass Exodus of 'Runaway' Stars

Astronomers have discovered dozens of massive runaway stars fleeing the Milky Way, shedding light on the phenomenon of stellar ejection. Using data from the Gaia spacecraft and two stellar catalogues, researchers identified 106 runaway O-type stars and 69 runaway Be-type stars. The study suggests that the dynamical ejection scenario, involving gravitational interactions in densely packed star clusters, is more likely than the binary supernova scenario as the cause of these runaway stars. The findings highlight the dominance of massive stars in the runaway star population and contribute to our understanding of stellar dynamics in the Milky Way.

via ScienceAlert|

#astronomy #astrophysics #gaia

astronomy2 years ago•5 min saved

Massive Stars on the Run: Fleeing the Milky Way

Astronomers have discovered dozens of massive stars that are fleeing the Milky Way, according to a study published in the journal Astronomy and Astrophysics. Using data from the Gaia spacecraft and two stellar catalogues, the researchers identified 106 runaway O-type stars and 69 runaway Be-type stars. The study suggests that the dynamical ejection scenario, involving gravitational interactions in dense star-forming regions, is more likely than the binary supernova scenario to explain the high proportion of massive stars among runaway stars. The findings contribute to our understanding of the mechanisms behind star ejections from galaxies.

via Universe Today|

#astronomy #astrophysics #gaia

science2 years ago•1 min saved

Runaway Star Discovered Racing Out of Milky Way

Researchers have identified six new runaway stars in the Milky Way, including the fastest known star to have ever escaped the galaxy, which was propelled by a massive thermonuclear blast. Four of the stars were likely pushed out as a result of Type Ia supernovae, which occur in binary star systems where one star is a white dwarf. These hypervelocity stars could help researchers calculate the birth rates of stars and discover more runaway stars.

via Futurism|

#astrophysics #hypervelocity-stars #milky-way

astronomy2 years ago•5 min saved

"Milky Way's Fastest Runaway Star Breaks Records at 5 Million MPH"

Six new runaway stars have been discovered racing through the Milky Way, with two of them moving faster than any object of this type ever seen. These record-breaking stars are traveling at an incredible 5.1 million miles per hour and 3.8 million miles per hour, respectively. The team behind the discovery thinks that the incredible velocity of these four stars could be the result of them being launched by a particular type of cosmic explosion called a Type Ia supernova.

via Space.com|

#astronomy #astrophysics #hypervelocity-stars

astronomy2 years ago•3 min saved

Milky Way's Two Runaway Stars Break Speed Records

Astronomers have discovered six new "runaway" stars in the Milky Way, including one that has the highest constant velocity ever observed in the galaxy, moving at a whopping 2,285 kilometers per second. These stars were kicked out in a dramatic explosion known as a "dynamically driven doubly-degenerate double detonation" and are all white dwarfs. The fastest four have properties consistent with the D6 scenario. The team suggests that most Type Ia supernovae would produce these runaway stars, and the Milky Way has launched 10 million such stars into intergalactic space.

via IFLScience|

#astronomy #gaia-observatory #milky-way

astronomy2 years ago•2 min saved

Galactic Speed Demons: Ranking the Fastest Stars in the Universe

A new study using data from ESA’s Gaia survey has revealed six additional runaway stars, two of which break the record for the fastest radial velocity of any runaway star ever seen. These stars were launched by Type 1a supernovas, which occur in binary star systems. The study also suggests that double detonation supernovae can produce runaway stars, which are faster than those caused by single detonation supernovae. The fastest star in the galaxy is J0927, with a radial velocity almost twice that of any other star in the galaxy.

via Universe Today|

#astronomy #double-detonation #milky-way-galaxy