Sentences with phrase «red giant stars»

Her degree is in Observational Astrophysics specializing in chemical composition of red giant stars in the Milky Way galaxy and some local dwarf galaxies.

This could allow analysis of the shells of gas around red giant stars of the faint galaxies around a quasar.

Some 6604 red giant stars have been classified.

Yet, the full star formation and enrichment history of a galaxy can be traced directly only if two key observables can be determined... ▽ More Red giant stars are perhaps the most important type of stars for Galactic and extra-galactic archaeology: they are luminous, occur in all stellar populations, and their surface temperatures allow precise abundance determinations for many different chemical elements.

It appears to consist of a pair of red giant stars, one of which has been stripped down to a relatively small core and surrounded by an extremely large disc of material that produces the extended eclipse.

For example, the Spitzer infrared astronomers favour a two major arm model because red giant stars (which emit a lot of infrared) are largely confined to the Perseus and Centaurus arms, whereas radio astronomers tend to favour a four major arm model because radio telescopes can detect atomic hydrogen in all four arms.

Green in these images usually reveals warm dust or red giant stars.

Red giant stars reach sizes of 100 million to 1 billion kilometers in diameter (62 million to 621 million miles), 100 to 1,000 times the size of the sun today.

Previous observations looked at brighter, aging red giant stars, which are not as plentiful because they represent a brief episode in a star's lifetime.

Aging red giant stars coexist with their more plentiful younger cousins, the smaller, white, Sun - like stars, in this crowded region of our galaxy's ancient central hub, or bulge.

Red giant stars may be tricking us into thinking they have planets when they don't.

Born in red giant stars or supernovas, they drift through the galaxy and eventually mingle with interstellar clouds of gas and dust, the places where new stars and planets arise.

First, it is absolutely certain that the earth will be obliterated in about 5 billion years, when the sun becomes a red giant star.

Right: After a couple hundred million years, the red giant star has burned out and collapsed to the white dwarf that shines intensely in ultraviolet wavelengths.

«Five billion years from now, the Sun will have grown into a red giant star, more than a hundred times larger than its current size,» says Professor Leen Decin from the KU Leuven Institute of Astronomy.

The oceans of super-Earths would persist for at least 10 billion years (unless boiled away by an evolving red giant star).

Three planets were discovered, two orbiting stars similar to the Sun and one orbiting a more massive and evolved red giant star.

«Red giant star gives a surprising glimpse of the sun's future.»

Incidentally, that's the same fate that awaits Mercury and Venus, the two innermost planets in our own solar system, when the sun grows into a bloated red giant star some 5 billion years from now.

Between now and then, humans will face plenty of other calamities: wars and pestilences, ice ages, asteroid impacts, and the eventual consumption of Earth — in about 5 billion years — as our sun expands into a red giant star.

In another study in Nature, they argue that a neutron star merging with a red giant star could also explain the unusually long - lived Christmas burst.

Wolszczan and colleagues recently caught both possible outcomes at work around a red giant star called BD +48 740.

«In many of these systems, the gravitational attraction can cause the companion to actually spiral into the core of the red giant star.

In the next seven billion years, the sun will swell into a red giant star, potentially engulfing Earth and surely sizzling away its water.

Object type: Red giant star Distance: 490 light years Mass: 2 suns, but losing it at a rate of 0.002 per cent per year

«Long after our own plain yellow sun expands to become a red giant star and turns Earth into a sizzling hot wasteland, there are still regions in our solar system — and other solar systems as well — where life might thrive,» says Kaltenegger.

Seen in ultraviolet light, the red giant star MIRA (bright dot at right) sports a cometlike tail stretching more than 13 light - years.

A planetary nebula is the detached outer atmosphere of a red giant star, which is one of the final stages in a medium - sized star's lifecycle.

A slowly rotating red giant star will have the same angular momentum when it becomes a tiny, fast rotating neutron star.

In only a few billion years, our own sun will turn into a red giant star, expand and engulf the inner planets, possibly even Earth.

The Sun is approaching its transition to a red giant star.

This research was presented in a paper, «Unexpectedly large mass loss during the thermal pulse cycle of the red giant star R Sculptoris», by Maercker et al. to appear in the journal Nature.

Artist's conception of the view of a hypothetical planet around a distant red giant star.

After hitting this envelope of gas, which was sloughed off by the progenitor red giant star as it neared the end of its life, a portion of this powerful explosion rebounded back towards the centre of the remnant.

White dwarfs form as the outer layers of a low - mass red giant star puff out to make a planetary nebula.

These nebulae are formed during the last stages of a star's life when a red giant star casts of its outer layers in a process which leads to the star becoming a white dwarf.

A team of astronomers has used the Precision Integrated - Optice Near - infrared Imaging ExpeRiment (PIONIER) instrument mounted aboard the ESO's Very Large Telescope (VLT) to image the massive red giant star.

A highly evolved, red giant star, Gacrux is still much smaller than the red supergiant Betelgeuse, at left.

It suggests that G2 could have been produced by the disruption of a red giant star, and its gas envelope is still feeding the black hole today.

In the case of π1 Gruis, we are left with an enormous variable red giant star, roughly 350 times the size of our Sun, but with only 1.5 times its mass.

Gacrux is a cool red giant star of spectral and luminosity type M3.5 III (but was once thought to be a «bright giant» of luminosity type II).

Enormous granules, otherwise known as convection cells, imaged on the surface of the red giant star π1 Gruis (Credit: ESO)

Arcturus is a orange - red giant star of spectral and luminosity type K1.5 IIIpe.

We used asteroseismology to measure a large obliquity for Kepler - 56, a red giant star hosting two transiting co-planar planets.

A highly evolved, orange - red giant star, Arcturus is still much smaller than the red supergiant Betelgeuse, at left.

Aldebaran A is a orange - red giant star of spectral and luminosity type K5 III.

A highly evolved, orange - red giant star, Aldebaran A is still much smaller than the red supergiant Betelgeuse, at left.

A highly evolved, orange - red giant star, Pollux is still much smaller than the red supergiant Betelgeuse, at left.

Astronomers have caught a red giant star in the act of devouring one of its planets.

Not exact matches

Also in the picture are amber - glowing red giants, stars that have used up all their fuel and have swollen up to a massive size.