Sentences with phrase «more massive stars»
The other is a pulsar, an ultra-dense neutron star left behind when an even more massive star underwent a supernova explosion.
ibtimes.com
Strangely, though, none of those stars was bigger than about 17 solar masses, even though much more massive stars abound and should also be dying as supernovae.
Elements heavier than hydrogen and helium were more abundant later in the star - forming boom as more massive stars ended their lives early and enriched the galaxy with material that served as the building blocks of planets and even life on Earth.
Lead author Fabian Schneider, a Hintze Research Fellow in the University of Oxford's Department of Physics, said: «We were astonished when we realised that 30 Doradus has formed many more massive stars than expected.»
The material of larger, more massive stars fall inward until the star eventually becomes a supernova, blowing off gas and dust in a dramatic fiery death.
Comparing our results with a previous survey targeting more massive stars, we find evidence that substellar companions more massive than 1MJup with a low mass ratio Q with respect to their host star (Q < 1 %), are less frequent around low - mass stars.
Their low metallicity allows these tiny galaxies to produce more massive stars, and, probably because massive stars have stronger magnetic fields, their explosive deaths can leave behind highly magnetized neutron stars, or magnetars.
While other, more massive stars only burn through the hydrogen at their core before coming to the end of their lifetimes, red dwarfs consume all of their hydrogen, in and out of their core.
«The neutron star, which is the remnant left over from the supernova explosion of an even more massive star, either came from the Milky Way's disk, or from a globular cluster at a considerable distance from the disk,» said Rodrigues.
An artist's impression shows extrasolar planet HD 189733b, where scientists say they've found water vapor, closely orbiting its much more massive star.
This is a counter-intuitive result, as more massive stars have more fuel to burn and might be expected to last longer.
Had two stars collided to form a more massive star?
Brighter, more massive stars, which guzzle their nuclear fuel more quickly, may burn out too quickly to allow complex life to evolve.
In the first stage of this process, the more massive star of the pair begins to run out of fuel, transferring its outer layers to its less massive companion — which is destined to become the magnetar — causing it to rotate more and more quickly.
But the more massive stars evolve faster than lighter ones do, and so they die sooner.
ALMA discovered that — contrary to expectations — the more massive stars in this region retain considerable stores of carbon monoxide gas.
He speculates that these more massive stars are collapsing to form black holes instead of neutron stars.
The more massive a star, the more material it sheds in high - speed winds.
This has a high density of more massive stars, and very different conditions to other clusters.
The more massive stars in the spherical component added heavier elements (dust) to the newly - formed disk in which younger generations of stars are still forming.
The more massive the star, the longer the brightening event.
(Theoretically, more massive stars would burn faster.)
More massive stars must display more spectacular effects because the rate of conversion of mass into energy is higher.
In general, the more massive the star, the shorter its time on the main sequence.
Even for these more massive stars, however, if the residual mass in the core is less than 1.4 solar masses (the Chandrasekhar limit), the stellar remnant will become a white dwarf.
In more massive stars, this cycle of events can continue, with the stellar core reaching ever - higher temperatures and fusing increasingly heavy nuclei, until the star eventually experiences a supernova explosion (see below Evolution of high - mass stars).
«Most of the disks were found to display rings, a phenomenon is known from previous observations of more massive stars,» says Sascha Quanz of NCCR PlanetS at ETH Zurich.
That's where our own sun gets off the fusion train, but more massive stars can keep on chugging along, climbing up the periodic table in ever more intense and short - lived reaction phases, all the way up to nickel and iron.
More massive stars are more likely to host planets more massive than Saturn, but this correlation may not exist for smaller planets.
The youngest stars in the galactic region surrounding around the Solar Neighborhood are associated with «subgroup B1» of the Pleiades (M 45) stellar moving group, and astronomers hypothesize that the more massive stars born in this group may have already exploded as 20 or so supernovae over the past 10 to 20 million years as the entire group of stars moved through a nearby region of the Local Bubble (Berghoefer and Breitschwerdt, 2002).