Sentences with phrase «spiral disk»

Hence, halo stars are composed typically of only 0.1 percent metals, relatively «metal poor» compared to the «Population I» stars of the spiral disk.

Until stellar extensions of SagDEG were found, the galaxy was thought to lie near and mostly on the other side of Milky Way's spiral disk (source).

The «Local Bubble» of low - density, hot and ionized gas, is actually part of a tube - like chimney that extends through the local region of the spiral disk into the surrounding galactic halo, and so may can act as a vent for the energetic hot gas produced by supernovae (more).

Plots of speed - grouped hydrogen clouds in our Galaxy traced the arms of the Milky Way and discovered that its outer spiral disk is warped.

As these «halo stars» were born when the Milky Way was young, their motions through and outside of the spiral disk still carry the imprint of the process by which the galaxy formed, when gravity brought gas together to create the first stars.

Most Population II stars are found outside the spiral disk of the Milky Way.

Some are found in globular clusters, but most move in a huge cloud around the disk called the galactic halo, which has a luminous inner component defined by globular star clusters and other easily observable stars (with coronae of hot gas possibly expelled by supernovae and of high - velocity neutron stars) and an outer dark - matter component inferred from its gravitational impact on the Milky Way's spiral disk.

EOS talk: «Extreme - AO Imaging of Disks around Intermediate - Mass Stars: Discovery of a Two - Armed Spiral Disk and a Warped Edge - on Debris Disk» by Kevin Wagner, grad student, Steward Observatory

This talk will focus on our new discoveries with VLT / SPHERE of a beautiful two - armed spiral disk with a large gap (the third known of its kind) and an edge - on warped debris disk — similar to the warp induced by the planet in Beta Pic.

Unlike typical galaxy formation, however, the outer blue spiral disk appears to be older than the inner red disk.

The bright spiral disk may also be surrounded by a much fainter, outer ring of stars, possibly stripped from at least one, former satellite galaxy.

Most of the Milky Way's flattened spiral disk has been estimated to be around 70,000 to 100,000 light - years (ly) across, with a central bulge of about 10,000 ly in diameter roughly around a supermassive dark hole.

Fortunately, astronomers have been able to use longer radio wavelengths that are not absorbed by the obscuring dust and radiowave - emitting molecules like carbon monoxide (which are concentrated in the spiral arms) to trace the spiral disk's structure.

The newfound young star clusters lie thousands of light - years below the plane of our Milky Way galaxy, a flat spiral disk seen in this artist's conception.

The 11 farthest known stars in our galaxy are located about 300,000 light - years from Earth, well outside the Milky Way's spiral disk.

There is also a machine with spinning spiral disks lifted from Duchamp, a posthumous candidate for the Turner Prize each year.

Not exact matches

Roll the disk into a cylinder, then twist into a spiral, pinching the ends and tucking them underneath.

They are also a model for the protostellar disks from which new solar systems are born and even for the billions of pinwheels of dust and gas we call spiral galaxies.

One of these is that the pressure gradient of the gas in the disk would create a headwind that would spiral the pebbles and boulders inward toward the young protostar, where they would be destroyed.

«This work shows that boulder - sized particles could, indeed, be scattered around the disk by the formation of spiral arms and then avoid getting dragged into the protostar at the center of the developing system,» Boss explained.

But a feeding black hole is surrounded by a whirling, white - hot disk of glowing debris — material heated to millions of degrees as it spirals down to oblivion.

Using this technique, scientists have measurements for 11 Milky Way satellite galaxies, eight of which are orbiting in a tight disk perpendicular to the spiral galaxy's plane.

Another (more familiar) type is the spiral, where arms wind out in a blue thin disk from a central red bulge.

As that disk spirals inward, it grows tremendously hot and radiates intensely.

The Milky Way today is a spiral - shaped disk of swirling gas orbiting a central hub of stars — signs of a mature galaxy.

The most ancient spiral galaxy: A 2.6 - Gyr - old disk with a tranquil velocity field.

They also found the Milky Way probably was a flat disk with a bulge in the middle, both of which grew simultaneously into the majestic spiral seen today.

The survey galaxies are consistent with computer models, which show at early stages, a majority of the bulges of spiral galaxies were built up at the same time as their corresponding disks.

If small variations arose in the density of the disk, ripples would form and sweep up mass until the gaseous disk clotted into spiral arms, which would later condense into balls of gas.

It will not work for galactic disks, however, like the spiral that forms our Milky Way.

These debris disks often show sharply defined rings or spiral patterns, features that could signal the presence of orbiting planets.

Massive planets might originate far out and then spiral inward due to gravitational interactions with their disk.

The spinning motion flattens the material into a round disk of gas and dust that spirals inward and rains down onto the natal star for about a million years.

«The outer portions of the disk accumulate into Phobos and Deimos, while the inner portions of the disk accumulate into larger moons that eventually spiral inward and are assimilated into Mars.

Dark atoms and molecules could perhaps clump together into galactic disks that overlap with the ordinary matter disks and spiral arms of galaxies such as Andromeda.

If it were any older, the gravitational interaction between the disk and the planet would have forced it to spiral inward, perhaps even to be swallowed by its star.

Rieke notes that our solar system contains a faint debris disk of its own — micrometer - size dust particles slowly spiraling in toward the sun.

A near - twin of our Milky Way, Andromeda contains at least 100 billion stars in a flattened disk of spiral arms, calmly orbiting a round bulge of stars in the center.

Theorists speculate that so - called quasi-periodic oscillation was caused by bright blobs in the black hole's accretion disk, made up of gas that slowly spirals towards the hole.

Over time the companion star spirals into its dying partner, trailing clouds of gas along with it and forming a thick disk along the plane of its orbit.

They simulated the behavior of dipoles in nanosize disks and rods of perovskite, a promising ferroelectric material, and found that they spontaneously twist into left - and right - handed spiral shapes.

As Sagittarius approached the Milky Way, passed through its disk, and circled back again, the dark halo of Sagittarius would have slammed into the plane of the Milky Way twice, knocking the disk askew and stirring up the formation of its spiral arms.

In the simulations, described in a study published in the September 15 issue of Nature, Sagittarius stirred up enough ripples to make a smooth, circular, spinning galactic disk evolve into a spiral much like the Milky Way.

The central black hole, theybelieve, is girdled by a thin disk of gas that is spiraling inwardtoward doom.

Bergmann and her colleagues studied the way matter in an accretion disk moves in its «death spiral» near the AGN of the galaxy NGC1097, a spiral galaxy about 45 million light years away from Earth.

The orbiting motion of the accretion disk can trace the «death spiral» of its matter as it falls into the darkness of what the astrophysicists measure to be a supermassive black hole.

Just outside the event horizon whirls high - temperature material — the accretion disk — waiting to «fall into» the black hole like water spiraling down a drain.

In this view, newborn planets can interact with the disk of material from which they form, causing them to spiral toward the central star.

The gas in the galactic disk will circulate faster and faster as it spirals into the vicinity of the SMBH.

In quasars, supermassive black holes are surrounded by whirling disks of hot gas that give off enormous amounts of radiation as they gradually spiral into oblivion.