Sentences with phrase «of elements heavier»

On July 21, 2003, some astronomers provided evidence from recent discoveries of giant extrasolar planets in mostly inner orbits around host stars that planetary systems may be more common around stars whose spectra show an enriched abundance of elements heavier than hydrogen and helium — also called high «metallicity» (exoplanets.org press release; and Gonzalez, 1999).

The star may have only around 81 percent of Sol's abundance of elements heavier than hydrogen — «metallicity» (Ansgar Reiners, 2007, from Jenkins et al, 2009).

The fusion of elements heavier than 60 AMU absorb energy.

Lacaille 9352 may have 50 to 58 of Sol's mass (Demory et al, 2009, Table 4; RECONS; and NASA Star and Exoplanet Database, interpolation table of Henry and McCarthy, 1993), less than half (43 to 46 percent) of its diameter (Demory et al, 2009, Table 4; and NASA Star and Exoplanet Database, derived from the power law formula of Kenneth R. Lang, 1980), 1.1 percent of its visual luminosity and 3.5 percent of its bolometric luminosity (NASA Star and Exoplanet Database, derived from the exponential formula of Kenneth R. Lang, 1980), and only about one tenth to 60 percent of Sol's abundance of elements heavier than hydrogen («metallicity»)(Demory et al, 2009, Table 4).

Given the low abundance of elements heavier than hydrogen, moreover, it is possible that the star is more likely to have gas giants in cold outer orbits.

«Models indicate that supernovae do not create enough of the elements heavier than iron to account for the amounts of these elements found in the universe.»

HE 0107 - 5240 has the lowest, known abundance of elements heavier than hydrogen and helium of stars in the Milky Way Galaxy that have thus far been measured for «metallicity» (more).

The data allowed them to confirm the mass of the planet as well as determine the approximate metallicity (a number of elements heavier than hydrogen and helium within a celestial body), and the primary composition of the planet's atmosphere.

Interest in these calculations waned among most astronomers when it became apparent that the lion's share of the synthesis of elements heavier than helium must have occurred inside stars rather than in a hot big bang.

That's what scientists concluded after finding traces of elements heavier than iron that had been left behind by that event.

Metallicity & Giant Planets - A three - year spectroscopic survey of 12 stars orbited by giant planets shows that they have high abundances of elements heavier than helium, typically two to three times that of our sun, Sol.

Building on this discovery, the CfA team found that SN 2017egm's host galaxy has a high concentration of elements heavier than hydrogen and helium, which astronomers call «metals.»

Hunting for the universe's heaviest atoms just got a little easier, thanks to a new technique that directly measures the mass of elements heavier than uranium.

They even provided evidence that all the gold in the universe and about half of the elements heavier than iron result from neutron star mergers.

In Earth's solar system, more massive planets have a lower abundance of elements heavier than hydrogen and helium.

Analyzing the light with the European Southern Observatory's Very Large Telescope in Chile, the researchers found the amount of elements heavier than helium to be less than one - thousandth that in the sun's neighborhood, and the ratio of carbon to silicon is just what would be expected of exploded population III stars.

«The prodigal son was going up against his mentor, and he had a whole team of us young guys,» says Louis Lanzerotti, a space physicist at the New Jersey Institute of Technology in Newark, who joined Krimigis on his winning Low Energy Charged Particle (LECP) experiment, designed to detect nuclei of elements heavier than hydrogen or helium.

The r - process is thought to produce about half of the elements heavier than iron.

They seem to explode preferentially in more primitive galaxies — those with smaller quantities of elements heavier than hydrogen or helium — which were more common in the early universe.

The composition of a star is typically broken up into three main categories: The fraction of a star composed of hydrogen gas, the fraction composed of helium gas, and the fraction composed of any element heavier than helium (also in gas form).

Not exact matches

A bit of nuclear alchemy called the rapid process or r - process is what drives the creation of such heavy elements.

In their analysis of the new legislation, lawyers at McCarthy Tétrault warned its «broad concepts and elements of uncertainty» could «place a heavy burden» on foreign companies looking to invest in Canada; the risk of a meddlesome minister torpedoing a deal is just too high.

The planets are mostly made of heavier elements, and didn't balloon with lightweight hydrogen and helium gases.

The possibility that machines could take over relationship jobs with a heavy emotional element opens a fundamentally new chapter in the history of technology.

Spending on autos was a key element of growth for the economy in 2016, with sales reaching record levels, but the latest figures again fell short of market expectations, despite rising inventories leading to heavy discounting by manufacturers.

«There is heavy usage of data, heavy use of analytics and an element of best practice sees prescriptive analytics as the wave of the future.»

Phosphorus made in supernovas, study confirms Last of 5 heavier elements essential to life to have stellar origin confirmed

The transfer of this life to earth Many scientists have objected that the generation of life can not occur, or have occurred, outside of a planetary environment, where heavier elements are plentiful.

Then light was liberated, and then gravity created the first stars and galaxies, then billions of years later, a local star went supernova and seeded the local nebula with heavier elements, elements necessary for life, elements that were not created during the Big Bang, then the sun was born, then the planets coalesced, and billions of years later some primate wrote a story about how the Earth was created at the same time as the rest of the universe, getting it wrong because that primate did not have the science nor technology to really understand what happened, so he gave it his best guess, most likely an iteration of an older story told prior to the advent of the Judeo Christian religion.

The finer element easily became a united body, but the consolidation of the heavy and gross element was accomplished with difficulty.

It conflicts with solid science, missing the 13.8 B years where the universe expanded, matter cooled and condensed into particles and atoms, billions of galaxies with billions of stars formed, burned up and created heavier elements and chemistry emerged from physics.

We now know that the heavier, terrestrial elements compose less than one per cent of the sun's mass, the rest being essentially a mixture of the two lightest elements, hydrogen and helium.

Ehrenzeller's collection differs from the current synth - heavy remix trend, but still achieves a contemporary feel with effective use of lighter synth elements.

He began to be created in the deep interior of the stars billions of years ago when the heavier elements were being formed.

Moreover it is only under the circumstances of the intense gravitational contraction, which leads to super-novae outbursts, that the heavier elements have been formed.

These heavier elements are at present regarded as products of super-novae explosions.

Whether in the red giants, the medium yellows or the white dwarfs, we may surmise at the presence in the center of heavy and extremely unstable elements possessing a greater atomic weight than uranium (unless these are simply «ordinary matter» reduced to a physical state of extraordinary compression).

The heavy chemical elements required for life (carbon, oxygen, nitrogen, phosphorous, and so forth) took several billion years of cooking time at the heart of stars before supernovas eventually dispersed them throughout space.

There was no inevitability that the chain of events that led to stable hydrogen and then to heavy elements had to occur.

Without hydrogen there would subsequently have been no heavy elements, which were formed by the fusion of hydrogen nuclei.

Another chain of events led from heavy elements to the origin of life.

Another chain of events led from heavy elements to life.

The balance of natural sodium with elements such as calcium, potassium, magnesium and phosphorus is in sync with the body's own chemistry, eliminating some of the problems sometimes associated with heavy salt intake.

The paper has stood up to every test I have thrown at it, with heavier stock taking the burden of structural support and the lighter weight allowing for decorative elements.

As for the bar itself, the interior echoes the image of an old Punch House with its heavy wooden paneling, brass elements and illustrious candles, and encourages guests to slow down and linger.

We provide an extensive range of chemical analyses on plant, soil and water samples for inorganic nutrients, trace elements and heavy metals.

If you have a very heavy sauce with lots of cheese, use an element that will cut the richness and lighten the enchilada, like pico de gallo.

The only element of a felony assault charge that his defense might be able to argue against was intent to cause physical injury but unless they go for an incapacity defense that's going to be a hard sell to a jury because only a total retard would believe that hurling a heavy metal dolly through a glass bus window wouldn't likely result in harm to someone.

Some ingredients from just one of the manufacturers we carry: — Recycled Rubber wood (clean, natural rubber wood recycled from rubber trees no longer able to produce latex); — Non-Chemical Preservative Wood (stabilized using a chemical - free kiln - drying process); — Non-Formaldehyde Glue (toys assembled using a non-formaldehyde glue in place of the traditional toxic wood glue); — Water Based Dye (non-toxic, water based dyes to add accent colors to products, containing no heavy metal elements such as lead, mercury, etc..)

«One of the proposed scenarios,» comments Romano Corradi, director of the GTC and another of the authors «is the presence of a component in the gas which is different from that which we normally find, poor in hydrogen and rich in heavier elements such as oxygen and carbon.