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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Hubble snaps an autumnal nebula glowing orange from young, hot stars

Digital Trends 30 Sep 2023
It shows a part of a nebula called Westerhout 5, located 7,000 light-years away and also known as the Soul Nebula ... As very massive stars are born and give off large gusts of radiation and streams of particles called stellar winds, these blow away nearby material which prevents more stars from forming too close ... Recommended Videos ... .......
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Dover-Eyota graduate has taken his football act to a new level at UW-La Crosse

Post Bulletin 25 Sep 2023
LA CROSSE, Wis ... Turns out the beauty of the Coulee Region won out, with its bluffs, woods and the majestic Mississippi River winding through it. Studer, a stellar athlete at Dover-Eyota High School, has never second-guessed his decision to bring his football act to Division III UW-La Crosse ... "The football has been great ... I was grinding the whole time....
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Webb Snaps Supersonic Outflow of Young Star

Technology Org 24 Sep 2023
At the centre is a thin horizontal multi-coloured cloud tilted from bottom left to top right ... Image credit. ESA/Webb, NASA, CSA, T ... Herbig-Haro objects are luminous regions surrounding newborn stars, and are formed when stellar winds or jets of gas spewing from these newborn stars form shockwaves colliding with nearby gas and dust at high speeds ... .......
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Profile of Japanese Prix de l'Arc de Triomphe contender Through Seven Seas

Sporting Life 23 Sep 2023
John Ingles profiles Through Seven Seas who will be bidding to give Japan a long-awaited first victory in the Prix de l'Arc de Triomphe ... But ten years ago Ozeki ventured to Longchamp with Stellar Wind who was seventh in the Prix Dollar on Arc weekend, rather than contesting the big race itself, having finished fifth in the Prix Foy beforehand ... ....
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Galaxies breathe gas, and when they stop, no more stars form

Phys Dot Org 20 Sep 2023
For most of the history of astronomy, all we could see were stars. We could see them individually, in clusters, in nebulae, and in fuzzy blobs that we thought were clumps of stars but were actually galaxies ... It's gas ... There were no stars or galaxies ... Supernovae could play a role, as could the powerful stellar winds from massive, hot, young stars ... .......
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PHOTO OF THE DAY: NASA’s James Webb Space Telescope Snaps Supersonic Outflow of Young Star

Space Coast Daily 18 Sep 2023
Herbig-Haro objects are luminous regions surrounding newborn stars, formed when stellar winds or jets of gas spewing from these newborn stars form shock waves colliding with nearby gas and dust at high speeds....
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What I didn’t count on was living this long: My money is running out and I’m ashamed of being a burden to my kids

Market Watch 18 Sep 2023
This article is reprinted by permission from NextAvenue.org. My widowed mother was left with debts and a bare bank account. So, she married an older man she thought wealthy ... And mine is sinking ... The cloud hovers only over me ... How could a woman as competent as I, with an employment record so stellar, wind up a burden to her children, like my mom feared?....
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James Webb captures the stunning outflows from an infant star

Digital Trends 16 Sep 2023
A gorgeous new image from the James Webb Space Telescope shows a dramatic sight created by the outbursts of energy coming from a very young star ... Herbig-Haro objects are formed when stellar winds or jets of gas spewing from newborn stars form shock waves that collide with nearby gas and dust at high speeds. ESA/Webb, NASA, CSA, Tom Ray (Dublin) ... .......
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Snaps supersonic outflow of young star

Science Daily 15 Sep 2023
Herbig-Haro (HH) objects are luminous regions surrounding newborn stars, formed when stellar winds or ......
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Lone Peak girls soccer quick strike enough to hold off Skyridge

Provo Daily Herald 15 Sep 2023
Jared Lloyd, Daily Herald. Jared Lloyd, Daily Herald ... A little extra wind … a fortunate bounce … and then one stellar strike ... The gusty wind, however, made have made its presence felt as the kick sailed just longer than the defender anticipated ... The wind made a difference and we didn’t look as good as we would hope, but it helped us in the second half....
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8 fall road trip itineraries for Colorado leaf season

Denver Post 14 Sep 2023
24, which can take you through the rougher-edged town of Minturn and along the outskirts of the Holy Cross Wilderness before winding its way up to 10,158-foot Leadville. It’s in this corridor where you can find some of the most beautiful views and stellar leaf-peeping in Colorado....
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Paul Sullivan: All eyes are on manager David Ross in the Chicago Cubs’ stretch run

The Eagle-Tribune 13 Sep 2023
Then Crow-Armstrong laid down a sacrifice bunt ... He could wind up National League Manager of the Year if the Cubs make it to the postseason ... The Cubs pulled to within 1 1/2 games of the Brewers before losing three straight to the Diamondbacks, thanks to an offensive shutdown, the wind blowing in at Wrigley Field and some stellar defense by Arizona ... ....
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Column: With the Chicago Cubs in a heated race, every decision by manager David Ross ...

Pioneer Press 13 Sep 2023
Then Crow-Armstrong laid down a sacrifice bunt ... He could wind up National League Manager of the Year if the Cubs make it to the postseason ... The Cubs pulled to within 1 1/2 games of the Brewers before losing three straight to the Diamondbacks, thanks to an offensive shutdown, the wind blowing in at Wrigley Field and some stellar defense by Arizona....
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