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


Here's How You Could Get Impossibly Large Galaxies in the Early Universe

Universe Today 01 Jun 2023
As a result, more recent stellar populations (Population II and I) have had higher metal content (aka ... This low efficiency results from the remaining gas being heated or blown out of galaxies by stellar winds or shock waves generated by supernovae ... developed winds and supernovae....

'Ted Lasso' fumbles the ball on too many storylines, drama off-screen | MARK HUGHES COBB

Tuscaloosa News 31 May 2023
A potential new romance, between Roy and Phoebe's teacher, gets teed up, then hung out to shiver in the wind, for … why? 'Cause soul revelations?. Ted's virtually vanished, and the Doc, a stellar and surprising addition to season 2, a real tonic, disappeared entirely....

NASA adds Chandra data to Webb observations, unveils stunning new images

Indian Express 27 May 2023
NASA on Tuesday released four images that combine data from the space agency\u2019s Chandra X-ray Observatory and the James Webb Space Telescope ... Check out the stunning results from this combination of data below ... The young, hot and massive stars that send out powerful stellar winds shaping the gas and dust are visible from the Chandra data ... ....

Chandra and JWST Join Forces in a Stunning Series of Images

Universe Today 26 May 2023
A patch of smaller young stars and their powerful stellar winds can be seen in the center of the image, represented by small dots surrounded by a faint purple mist ... Other X-ray sources are peppered throughout the spiral arms, likely stellar remnants, dust clouds, and maybe some intermediate black holes....

William Binney 2022 reverse speech on the FBI had been using the Stellar Wind program

Bitchute 25 May 2023
Go to the source via the article link to view the video .......

Up North weekend weather: Very close to a 5-star Memorial Day weekend

Michigan Live 25 May 2023
It will be hard to argue that this weekend’s weather in Northern Michigan won’t be anything but stellar ... Usually at least one day would have some rain and wind, but not this year ... Wind is usually a factor in those activities. In this stellar weekend weather pattern, wind will be relatively light. Wind forecast at 2 p.m ... Wind forecast at 2 p.m....

PHOTO OF THE DAY: NASA’s Spitzer Space Telescope Captures Baby Stars in the Orion Constellation

Space Coast Daily 23 May 2023
NGC 2174 is located around 6,400 light-years away ... the “Monkey Head.” (NASA image) ... the “Monkey Head.” ... Columns of dust, slightly to the right of the center in the image, are being carved out of the dust by radiation and stellar winds from the hottest young stars recently born in the area ... Related Story. ... ....

Planet of Lana Review – Spirited Away

GamingBolt 22 May 2023
Wishfully’s Planet of Lana begins with the main character, Lana chasing her older sister, Ilo ... It’s understated but still somewhat positive when traveling with Mui, as the sound of birds and the wind carries through different environments. And even without understanding the language, the voice work is stellar ... This game was reviewed on PC....

Indy 500: Rosenqvist tops 234mph in Top 12 qualifying, Ferrucci stars

Autosport 21 May 2023
But light winds helped the drivers to stay flatout on the throttle....

Image of darkness and light shows new stars being born in Lupus 3 nebula

Digital Trends 19 May 2023
CTIO/NOIRLab/DOE/NSF/AURA/ T.A ... D. de Martin & M ... Related ... Recommended Videos. When stars are born and are young, they give off strong stellar winds which blow away dust and gas from around them ... Studying sites of star formation like these nebulae can help astronomers learn more about this process and about the early stages of the stellar life cycle....

Satellite boom sparks worries over orbital collisions, light pollution and space junk

York News-Times 18 May 2023
Like the Milky Way, M31 is a spiral galaxy, with many of its brightest stars clustered in arms winding out from the galactic center ... A Stellar Shockwave (2002) ... A young hot star in that nebula, LL Ori, is pumping out streams of charged particles known as stellar wind at speeds high enough to produce a shockwave in the surrounding gas....

Flip-flopping magnetic fields hint at a solution for puzzling fast radio bursts from space

Phys Dot Org 14 May 2023
Massive stars are known to have strong stellar winds with organized magnetic fields around them. If the source of the bursts were moving in and out of the stellar wind region as it travels through its orbit, we would expect the observed magnetic field direction to reverse....

Most Viewed

FILE - In this May 27, 2019, file photo, birds fly as Mount Everest is seen from Namche Bajar, Solukhumbu district, Nepal.
AP / Niranjan Shrestha, File

Nepal urged to tighten climbing rules to cut Everest deaths

Gulf News | 04 Jun 2023
Governor Ron DeSantis speaking with attendees at the 2021 Student Action Summit in Tampa, Florida
Creative Commons / Gage Skidmore https:/

Ron DeSantis thanks then attacks heckler who called him a fascist

The Guardian | 03 Jun 2023