Sentences with phrase «luminosity of a star»

«For about three minutes after the BAT trigger, the superflare's X-ray brightness was greater than the combined luminosity of both stars at all wavelengths under normal conditions,» noted Goddard's Adam Kowalski, who is leading a detailed study on the event.

The inner yellow ring is an indication where the temperature is 100 degrees above the absolute zero -LRB--173 C) with the current luminosity of the star while the outer yellow ring shows where this temperature was reached when the star was a hundred times brighter.

Comparing the actual and apparent luminosity of a star should in theory make it possible to calculate its distance.

Determined to be a binary by Carl L. Stearns in 1936, the combined visual luminosity of Stars C and D is about one percent of Sol's.

These superflares last from one hour to one week and increase the normal luminosity of a star as much as one thousand times.

With knowledge only of the luminosity of the star (1/600 that of the sun), the mass of the planet (1.3 times that of Earth), and the length of its orbit (11.2 days), the team was able to predict that, with a variety of possible atmospheres, it would be possible for Proxima b to harbor liquid water on its surface.

Once confirmed, a transit allows astronomers to confidently measure a planet's orbital period — its year — as well as to estimate its size, by comparing the depth of its shadow with the estimated dimensions and luminosity of its star.

But even more staggering is the energy released in the form of neutrinos, which can briefly exceed the luminosity of all stars in the known galaxies.

Such stars are rich in carbon, and it is believed that the fall in brightness is due to the star's emission of carbon, which then condenses to a dense cloud near the star, rather than to a change in luminosity of the star itself.

At the highest zoom level, hovering your mouse over each star will give you the name, spectral type and luminosity of the star, and clicking on the star will bring up an information window that allows you to search for more information on that star.

Below about 0.5 solar masses, the luminosity of the star varies as the mass to the power of 2.3, producing a flattening of the slope on a graph of mass versus luminosity.

where M and L are the mass and luminosity of the star, respectively, is a solar mass, is the solar luminosity and is the star's estimated main sequence lifetime.

To pass the time during long space treks, players can access the minigame and receive graphs, or «light curves», that represent measurements of the luminosity of stars.

These measurements of light are presented as graphs, called light curves, and show the luminosity of a star.