Sentences with phrase «supergiant star n6946»

The accretion disk around the X-ray source draws material from the supergiant star's stellar wind and heats it to millions of degrees.

The supergiant star HDE 226868 belongs to the spectral class O9.7 Iab.

Jeremy Lim of the Academia Sinica Institute of Astronomy & Astrophysics in Taiwan; Chris Carilli, Anthony Beasley, and Ralph Marson of the National Radio Astronomy Observatory (NRAO) in Socorro, NM; and Stephen White of the University of Maryland studied the red - supergiant star Betelgeuse, about 430 light - years away in the constellation Orion.

«This alters our basic understanding of red - supergiant star atmospheres,» explains Lim.

A new study led by Keiichi Ohnaka, a researcher at Catholic University of the North in Chile, sought to understand how the distant red supergiant star Antares manages to expel so much matter off its surface as it nears the end of its life and nears its finale as a spectacular supernova.

Antares is a red supergiant star, and its large size makes it an ideal candidate for study from Earth.

Thorne has carried out a wide range of theoretical research in gravitation and astrophysics, including having predicted the existence of a type of red supergiant star with a neutron star core, and using general relativity to describe how black holes move and precess.

Among the highlights in the Hubble photo is HD 93129Aa, a supergiant star that's 80 times more massive and 2.5 million times brighter than the sun.

The very bright star on the right side of this map is Deneb - it is a supergiant star which may be at a similar distance as the nebula.

Using ESO's Very Large Telescope Interferometer astronomers have constructed the most detailed image ever of a star — the red supergiant star Antares.

A striking example can be seen in the constellation Orion, the hunter: his right shoulder is the red supergiant star Betelgeuse and his left knee, the blue supergiant Rigel.

This picture of the dramatic nebula around the bright red supergiant star Betelgeuse was created from images taken with the VISIR infrared camera on ESO's Very Large Telescope (VLT).

For the first time, a «shock breakout» in an exploding supergiant star was discovered at visible wavelengths.

Why, after millions of years of steadily lighting the cold darkness, does a supergiant star suddenly explode in a blinding blaze of glory brighter than 100 billion stars?

The Zoomable Universe: An Epic Tour Through Cosmic Scale, From Almost Everything to Nearly Nothing By Caleb Scharf What do a common cold - causing virus, an adult blue whale and the red supergiant star Betelgeuse have in common?

In a study published in Solar and Stellar Astrophysics, the researchers say they saw the red supergiant star N6946 - BH1 flare a million times brighter than our sun for several months in 2009 before fading out of visible wavelengths, a likely sign of a brand - new black hole.

Hubble has caught a red supergiant star flaring up and disappearing — probably because it was transformed into a black hole

It's a shame they couldn't get along: each pattern is outlined by hot blue suns, and each boasts one of the sky's only two bright red supergiant stars — Betelgeuse in Orion, and Antares, the heart of Scorpius.

The team calculated light curves of metal - poor supernova, produced by blue supergiant stars, and «metal - rich» red supergiant stars.

Earlier sharp images have shown details on much more massive, red supergiant stars like Betelgeuse and Antares.

Determining the convection properties of most evolved and supergiant stars, such as the size of granules, has been challenging because their surfaces are frequently obscured by dust.

So far, astronomers have not directly spotted supergiant stars in the early universe.

Interacting supernovae from photoionization - confined shells around red supergiant stars.

«This method for propelling the mass outflows of red giant and supergiant stars was proposed by Sun Kwok in the same year that Martin Schwarzschild postulated the existence of large convection cells on these stars,» Lim said.

«The idea that red - supergiant stars have enormous convection cells is not new,» noted Marson.

The new picture of Betelgeuse's atmosphere also helps resolve the mystery of how massive amounts of dust and gas are expelled from red supergiant stars, an important source of enrichment for the interstellar medium.

Fine details show throughout the galaxy's arms, disk, bulge, and nucleus - blue and red supergiant stars, star clusters, and star - forming regions, and dust lanes trace out fine structures in the disk and bar.

[64] Supergiant stars often swing between O or B (blue) and K or M (red).

Chin, 2001: Yellow hypergiants as dynamically unstable post-red supergiant stars.

Not exact matches

Before 1987A, astronomers thought that only puffy red stars known as red supergiants could end their lives in a supernova.

In July, Thomas Reynolds, Morgan Fraser and Gerard Gilmore, all at the University of Cambridge, reported they had seen another supergiant fade to black amid a star cluster in archival Hubble Space Telescope observations of the galaxy NGC 3021.

In the failed supernova of a red supergiant, the envelope of the star is ejected and expands, producing a cold, red transient source surrounding the newly formed black hole, as illustrated by the expanding shell (left to right).

When the cores of certain «red supergiant» stars collapse, instead of making supernovae, they may form black holes that simply swallow up the disintegrating star.

The star, named V838 Monocerotis, suddenly inflated into a cool supergiant in January and February 2002, growing 10,000 times brighter and becoming the most luminous star in our galaxy for about 40 days.

Stars with more than about 10 solar masses, after burning their hydrogen become red supergiants during their helium - burning phase.

Mira, in the sprawling constellation Cetus, also delights observers: this famous supergiant contracts and expands like a runaway balloon to become one of the largest stars known.

Deneb is tied with Orion's foot star, Rigel, as the most luminous bright star in the heavens — a white supergiant, more dazzling than the famous red variety.

But the progenitor of SN 1987A turned out to be a smaller, hotter kind of star called a blue supergiant.

Counterclockwise from bottom: Researchers have spotted three baby stars at the center of the Milky Way, discovered a large molecular cloud that they believe will turn into a massive star, and watched a red supergiant, Be

But because these supergiants live so close to other stars (they don't exist long enough to migrate away from their birthplaces within star - making clusters), they are usually impossible to pick out.

Red supergiants are the largest type of star known, and Betelgeuse, part of the Orion constellation, is a formidable member of that class.

But the big surprise among the supergiants was R 136a1, a star that might be called a hypergiant.

Researchers from the University of California, Berkeley, reported yesterday at the meeting that Betelgeuse — a red supergiant that, back in 1921, was the first star ever to have its size measured — has steadily shrunk in diameter by 15 % over the past 15 years.

That's fast enough to crowd the young universe with supergiants whose explosions would provide the materials for future stars and galaxies.

That's because no one knows whether such supergiants grow from scratch within star - forming regions, or whether, like supermassive black holes and galaxies, they reach their enormous mass through mergers.

The binary star system was emitting X-rays, which are not usually produced by blue supergiants.

Cygnus X-1 was found as part of a binary star system in which an extremely hot and bright star called a blue supergiant formed an accretion disk around an invisible object.

The longer the pulsation period of one of these yellow supergiants, the more luminous the star; so measuring the period determines the star's true, or intrinsic, brightness.

Freedman and her colleagues found that dozens of these stars are yellow supergiants, with the brightness and colour of Cepheids.

Stars 10 to 20 times the mass of our sun often expand to supergiants before ending their lives as supernovae.