Stellar wind

A stellar wind is a flow of gas ejected from the upper atmosphere of a star. It is distinguished from the bipolar outflows characteristic of young stars by being less collimated, although stellar winds are not generally spherically symmetric.

Different types of stars have different types of stellar winds.

Post-main-sequence stars nearing the ends of their lives often eject large quantities of mass in massive ( \scriptstyle \dot{M} > 10^{-3} solar masses per year), slow (v = 10 km/s) winds. These include red giants and supergiants, and asymptotic giant branch stars. These winds are understood to be driven by radiation pressure on dust condensing in the upper atmosphere of the stars.

Massive stars of types O and B have stellar winds with lower mass loss rates (\scriptstyle \dot{M} < 10^{-6} solar masses per year) but very high velocities (v > 1–2000 km/s). Such winds are driven by radiation pressure on the resonance absorption lines of heavy elements such as carbon and nitrogen. These high-energy stellar winds blow stellar wind bubbles.

Latest News for: Stellar wind

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Pagunsan triumphs in wild finish, edges Lascuna in playoff

Manila Bulletin 07 Oct 2022
Juvic Pagunsan. Pagunsan set up the title-clinching putt with a brilliant blast from the frontside bunker of No ... Me time na malakas ang hangin, minsan mahina naman ... It was indeed a wild, wild finish to a tournament that has all the trimmings of such ending – with a stellar cast and on a wind-swept course that repels anything less than accurate shots ... ....
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Pagunsan wins playoff, Riviera title in wild finish

Manila Standard 07 Oct 2022
Juvic Pagunsan displays his ICTSI Riviera Classic trophy. Manny Marcelo ... “Mahirap this week, hindi ko alam talaga kung papano laruin ang Riviera ... It was indeed a wild, wild finish to a tournament that has all the trimmings of such ending – with a stellar cast and on a wind-swept course that repels anything less than accurate shots ... 4 ... .......
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JFK derails Doctor Who, plus the drama that was too terrifying to show: 100 years of the BBC, part five

The Observer 30 Sep 2022
It ran until 1978, turning police procedurals into go-to shows ... Read more ... PA ... But it was also an artistic landmark, highlighting (as The War Game had tried to do) the power of drama-documentary as a small-screen form and propelling the stellar movie career of director Ken Loach (Kes, Hidden Agenda, The Wind That Shakes The Barley, I, Daniel Blake.) ... ....
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PHOTO OF THE DAY: NASA Hubble Space Telescope Captures Stellar Nursery Within Large Magellanic Cloud

Space Coast Daily 21 Sep 2022
These stars emit intense ultraviolet light, which causes nearby hydrogen gas to glow, and torrential stellar winds, which carve out ridges, arcs, and filaments from the surrounding material....
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Blue Jays' Jose Berrios has more than pitching on his mind these days

Canoe 21 Sep 2022
PHILADELPHIA — Jose Berrios has more than just his next start to worry about these days. Story continues below. This advertisement has not loaded yet, but your article continues below. We apologize, but this video has failed to load ... Jays' defence and offence stellar in win over Rays. But whether that start winds up going to White remains up in the air....
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Blue Jays starter Jose Berrios has more than pitching on his mind these days

Canoe 21 Sep 2022
PHILADELPHIA — Jose Berrios has more than just his next start to worry about these days. Story continues below. This advertisement has not loaded yet, but your article continues below. We apologize, but this video has failed to load ... Jays' defence and offence stellar in win over Rays. But whether that start winds up going to White remains up in the air....
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Rockies’ squander big night by C.J. Cron in 6-3 loss to Giants

Denver Post 21 Sep 2022
Freeland lowered his ERA to 4.38, not stellar by any means, but easily the best among all of Colorado’s starters. And as the season winds down, the left-hander is pitching well, having given up two or fewer earned runs in each of his last five starts, good for a 1.84 ERA over that span....
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3 key takeaways from the Buffalo Bills victory over the Titans: Stefon Diggs explodes, and more

Metro USA 20 Sep 2022
He looks like a man on a mission this season, which is great news for Buffalo because the rest of their wide receiving corps is proving to be stellar. Davis and Isaiah McKenzie were the trendy breakout names this season, and both could likely wind up with impressive seasons, but ......
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The secret lives of celebrity stars

Astronomy 19 Sep 2022
As the stars’ stellar winds collide during these flybys, the system emits less radiation at ultraviolet wavelengths ... Davidson thinks that Eta Car’s outflow has become “almost a normal stellar wind,” and that may presage a major eruption ... These S stars are among the most enigmatic stellar inhabitants of the Milky Way....
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Mutant ninjas, Cobras and Vampires: T Magazine’s top picks of the week

The Wire Network 17 Sep 2022
Binge this week. Cobra Kai Season 5. It should be official. The Karate Kid mythos is now officially a cult phenomenon ... Play this week. TMNT. Shredder’s Revenge ... Listen this week ... Watch this week ... Despite mixed reviews, the movie boasts a stellar supporting cast and should provide a fun summer watch for those looking to wind down at the end of the day .......

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