Sentences with phrase «studied type of supernova»

They planned to do so by carefully calibrating the brightness of a well - studied type of supernova in very distant galaxies.

Not exact matches

Observations of type 1a supernovas imply a faster expansion rate (known as the Hubble constant) than studies of the cosmic microwave background — light that originated early in cosmic history (SN: 8/6/2016, p. 10).

For this study, the team set out to investigate the timing of supernova dust formation by measuring isotopes — versions of elements with the same number of protons but different numbers of neutrons — in rare presolar silicon carbide grains with compositions indicating that they formed in type II supernovae.

She accepted an offer from a group of astronomers at Berkeley, part of a collaboration studying a rare type of supernova that some believe holds the key to measuring the expansion of the universe.

The evidence for dark energy came from studies of a kind of exploding star known as a Type 1a supernova.

«We are now fully confident that one of the most popular supernova remnants detected in our galaxy was produced by an ordinary type Ia supernova that was first detected more than 400 years ago,» write Andrea Pastorello of Queen's University Belfast and Ferdinando Patat of the European Southern Observatory in Germany in a commentary on the study.

These were not included in either Li's or Smartt's study, both of which focused on type II - P supernovae, the most common type of core - collapse supernova.

Neither study searched for the stars responsible for so - called type Ia supernovae, which are explosions of white dwarf stars that have grown overweight by feasting on material from a companion star.

Type Ia supernovae are explosions that can be seen even in far - away galaxies and help astronomers study the large - scale structure of the Universe.

The standard path to type Ia supernovae, the study's authors wrote, should have produced 30 to 50 times the x-rays observed, indicating that accreting white dwarfs account for less than 5 percent of the explosions.

The predictable luminosity of Type Ia supernovae means that astronomers can use them as cosmic standard candles to measure their distances, making them useful tools in studying the cosmos.

A group of astronomers used Hubble to study the remnant of the Type Ia supernova explosion SNR 0509 - 68.7 — also known as N103B (seen at the top).

But a new study presents evidence that, for at least one kind of galaxy, the binary - accretion model should not be more than a minor contributor to the observed type Ia supernovae population.

«It will have important repercussions for the study of supernovae type Ia.»

Other discoveries in the Milky Way detailed in the special edition include the sharpest image yet of a gamma ray source — a nearby supernova remnant — which will enable researchers to study this object at finer scale than before — and three new «gamma ray shells» that are possibly examples of a new type of supernova remnant.