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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Artist of the Year 2023: Instrumental music nominees

Orange County Register 19 Mar 2023
jazz, piano, strings, winds and percussion, and world/cultural and commercial music ...Danny O’Grady is a stellar young clarinetist! … Danny has blossomed into an exceptional young section leader of our top wind ensemble ... He is a stellar classical player in our Wind Ensemble and Symphony....
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Star on the brink of going supernova spotted by James Webb Space Telescope

Astronomy 15 Mar 2023
They also sport intense stellar winds that can clock in at speeds of millions of miles per hour. Such strong stellar winds mean Wolf-Rayet stars shed their outer layers at an astonishing rate ... The second issue is that the particularly powerful stellar winds of Wolf-Rayet stars ......
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Prelude to a Supernova: The James Webb Captures a Rare Wolf-Rayet Star

Universe Today 15 Mar 2023
Wolf-Rayet (WR) stars exhibit powerful stellar winds that have blown away much of their mass, their surfaces are enriched with heavy elements, and they’re much hotter than most other stars ... The star’s extreme stellar winds are at work blasting material away into space, creating the short-lived nebula....
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Engino, Mi�oza match 68s in wild start

The Manila Times 15 Mar 2023
He signed for a 32-36 card that still netted him a shared view of the top with Engino, one stroke ahead of an equally hot-finishing Ira Alido and gutsy Korean rookie pro Hyun Ho Rho as majority of the stellar field struggled in the heat and wind around the short but tricky par-70 Marapara layout and ended up with soaring scores ... 7 ... .......
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Engino, Miñoza match 68s in wild start

Manila Standard 15 Mar 2023
Manny Marcelo ... He signed for a 32-36 card that still netted him a shared view of the top with Engino, one stroke ahead of an equally hot-finishing Ira Alido and gutsy Korean rookie pro Hyun Ho Rho as majority of the stellar field struggled in the heat and wind around the short but tricky par-70 Marapara layout and ended up with soaring scores ... 7 ... ....
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Observations inspect X-ray radiation from Vela X-1

Phys Dot Org 13 Mar 2023
X-ray binaries are composed of a normal star or a white dwarf transferring mass onto a compact neutron star or a black hole ... HD 77581 launches a strong stellar wind that causes a bow shock as it interacts with the interstellar medium ... Sofia V. Forsblom et al, IXPE observations of the quintessential wind-accreting X-ray pulsar Vela X-1, arXiv (2023)....
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Surveillance reform: The FISA reauthorization ‘debate’ distraction 

The Hill 13 Mar 2023
Hard deadlines seem to be what’s required to get Congress to act on much of anything these days ... Indeed, on Feb ... We did. Lots.&nbsp; ... Bush’s STELLAR WIND mass surveillance program that first triggered a congressional attempt to make an illegal spying operation legal ... It became law in 2008 and has been renewed repeatedly since.  ... history....
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How James Webb is peering into galaxies to see stars being born

Digital Trends 11 Mar 2023
Recently astronomers used the James Webb Space Telescope to look at the structures of dust and gas which create stars in nearby galaxies ... NASA/Space Telescope Science Institute ... Star formation is a delicate balance of having enough material for new stars to form, and the stellar winds created by young stars blow this material away ... .......
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Earth Wind & Fire accuses ‘legacy’ band of trademark infringement

Hastings Tribune 10 Mar 2023
Earth, Wind & Fire Alumni ... The lawsuit demands that Substantial and Stellar immediately cease using any of Earth, Wind & Fire’s registered or common law trademarks or anything “confusingly similar thereto” and to deliver an accounting of all revenue derived from promotion of its concerts “for payment over to Plaintiff.”....
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European Space Agency wishes a Happy Holi with stunning cosmic colours, see pics

Hindustan Times 08 Mar 2023
Holi is the time to celebrate with lots of beautiful colours ... "Cosmic colours for your Holi and Purim parties ... They further explained about the pictures as well ... As stellar winds or jets of gas emitted by young stars collide with neighbouring gas and dust at high speeds, Herbig-Haro objects—luminous regions surrounding young stars—are created ... .......
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'Cosmic colours for Holi': European Space Agency marks festival with nebula pics

Live Mint 08 Mar 2023
Stellar winds or jets of gas ejected by newborn stars collide with nearby gas and dust at high speeds to produce Herbig-Haro objects, which are bright regions around newborn stars.'In the case of HH 505, these outflows originate from the star IX Ori, which lies on the outskirts ......
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European Space Agency shares stunning cosmic colours on Holi. See post

India TV 08 Mar 2023
Trending News. Holi is a festival of colours that is traditionally celebrated by placing handfuls of coloured powder on friends and family to extend wishes and celebrate the day ... These objects are created when the stellar winds or jets of gas emitted by young stars collide with neighbouring gas and dust at high speeds ... ALSO READ.. Happy Holi 2023 ... .......
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Juvenile shot at home of Bengals running back Joe Mixon

The Bismarck Tribune 08 Mar 2023
Mandan man sentenced on federal drug charge Bismarck pharmacist added to abortion lawsuit Sunday storm continues snowy weather pattern in southern North Dakota Men convicted of murder in Bismarck drug killing Late-weekend accumulating snow, strong winds expected in southern North ......
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