stellar wind


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stellar wind

The steady stream of matter ejected from many types of stars, including the Sun (see solar wind). Although the mass loss is small in sunlike stars, it has been found to be very considerable in red giants and in hot luminous ultraviolet stars, particularly in Of stars and Wolf-Rayet stars. This large mass loss could have a substantial effect on the final evolution of the stars into either white dwarfs or into more massive neutron stars (or black holes). In hot stars the stellar winds are thought to be produced by radiation pressure of the intense ultraviolet radiation acting on the atoms in the stars' atmospheres. In red giants with hot coronae and low gravity the winds may simply be the expansion of the coronal gases into space. See also T Tauri wind.

stellar wind

[′stel·ər ′wind]
(astronomy)
The flow of ionized gas from the surface of a star into interstellar space.
References in periodicals archive ?
It was already known that the stellar wind is "clumpy", but the Herschel results have shown that some regions around the star must have no wind.
35) is shaping up to be a magnificent race featuring three reigning Eclipse champions in Songbird, Beholder and Stellar Wind.
Another way Wolf-Rayet stars are said to form is when a massive star ejects its own hydrogen envelope in a strong stellar wind streaming with charged particles.
Scientists have thought a dense stellar wind fueled the outburst and considered it the prototype for "supernova impostors," or shorter-lived eruptions that don't quite destroy a star.
The radiation on the cloud creates high pressure at the surface by ablation and ram pressure from the stellar wind.
This led to speculation that all low-mass stars go through a period of extremely rapid rotation and then gradually slow as their stellar wind carries away angular momentum.
on the same card, beholder's bid to win the Grade 1 Zenyatta Stakes for the fourth year in a row came unstuck at the hands of the John Sadler-trained Stellar Wind, also ridden by espinoza.
Our sample includes slow and fast rotators, with and without a magnetic field, with and without a stellar wind.
Planetary magnetospheres are 'bubbles' made of fields and plasma created by the shock between the stellar wind and the intrinsic magnetic field of the planet.
And now, scientists have found a connection between the spots on its surface and its stellar wind.
Trainer Jerry Hollendorfer said: "You come to a point in the road where you have to meet the big ones and there's a couple of big ones out there at Santa Anita - Beholder and Stellar Wind.
This study also revealed that the black hole in M101 ULX-1 can capture more material from that stellar wind than astronomers had anticipated.