Sentences with phrase «of a red giant»

Enormous granules, otherwise known as convection cells, imaged on the surface of the red giant star π1 Gruis (Credit: ESO)
The new images show for the first time details on the surface of the red giant W Hydrae, 320 light years distant in the constellation of Hydra, the Water Snake.
«In many of these systems, the gravitational attraction can cause the companion to actually spiral into the core of the red giant star.
Most of the grains probably formed just above the churning atmospheres of red giant stars.
The victim, they found, was a red giant that donated hydrogen gas for eons until it was eventually transformed into a white dwarf — the old, small, bright and dense remnant of a red giant.
Now, Livio and co-worker Lionel Siess of the Grenoble Observatory in France have adapted a sophisticated stellar evolution model to compute the aftermath of a red giant devouring a nearby planet.
Because 4 % to 8 % of all red giants radiate unusually bright infrared light and are abundant in lithium, Livio and Siess suggest that these may have had a planet on their menu recently.
AGE MAP The ages of tens of thousands of red giant stars are charted atop a map of the Milky Way.
Alma: s images provide the clearest view yet of the surface of a red giant with a similar mass to the Sun.
Even white dwarfs, the tiny leftovers of red giants, could theoretically host habitable planets.
This is the fate of all stars with masses between about one and eight times that of the Sun (see «The death throes of a red giant», New Scientist, 24 March 1990).
First, the paper suggests that there could be habitable planets around white dwarfs — during the dead - end stage that comes after the inferno of the red giant.
That fate awaits Earth in about 5 billion years, when our sun will join the ranks of the red giants.
The outer layers of the star — the stellar «atmosphere» — absorb this excess and swell outward into the characteristic distended figure of a red giant.
William Cochran at the University of Texas at Austin and his colleagues examined years of data from four observatories to characterise the wobble of a red giant star called Gamma Draconis that is 154 light years away.
In 2017, an international team of astronomers identified the surface of the red giant π Gruis in detail using the European Southern Observatory's Very Large Telescope.
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.
The helium core of a red giant continues to collapse until it is entirely supported by electron degeneracy pressure — a quantum mechanical effect that restricts how closely matter can be compacted.
It is thought that the cells on π1 Gruis are able to grow as large as they have because the surface gravity of the red giant is very weak compared to that of the Sun.
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.
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.
«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.
7.59 billion years: The Earth and Moon are very likely destroyed by falling into the Sun, just before the Sun reaches the tip of its red giant phase and its maximum radius of 256 times the present - day value.
This allows it to study a variety of astronomical objects, such as the molecular gas in planetary nebulae, molecules on active comets, the heating mechanisms of red giants and the afterglows of gamma - ray bursts.
Her degree is in Observational Astrophysics specializing in chemical composition of red giant stars in the Milky Way galaxy and some local dwarf galaxies.
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.
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