Apr 24, 2002 · These extremely old, dim stars provide a completely independent reading of the universe's age without relying on measurements of the universe's expansion. The ancient …

May 12, 2010 · The main sequence method pegged its age of birth to about8 billion years ago, while the white dwarf method yielded a much younger age ofjust 6 billion years.

In 2013 Hubble found signs of Earth-like planets in the atmospheres of a pair of white dwarf stars roughly 150 light-years away and only 625 million years old.

Dec 18, 2018 · White dwarfs are some of the oldest observable objects in the universe. Their age and relative stability provide a window in the history of our galaxy and our universe as a whole. …

wdwarfdate derives the Bayesian total age of a white dwarf from an effective temperature and a surface gravity. It runs a chain of models assuming single star evolution and estimates the …

Oct 19, 2023 · A white dwarf is a dense and cool star that forms when a medium-sized star runs out of fuel. Learn about its discovery, classification, formation, fate and orbiting planets.

White dwarfs can provide important information about the age of the galactic disk by comparing their luminosity function at low luminosities, and specially the position of its cut-off, with the …

Apr 24, 2002 · By adding the one billion years it took the cluster to form after the Big Bang, astronomers found that the age of the white dwarfs agrees with previous estimates that the …

White dwarf stars are extreme objects that are roughly the same size as the Earth. They have densities typically around 10 9 kg/m 3 (the Earth has a density of around 5×10 3 kg/m 3) …

6 days ago · This chapter provides an observational overview of white dwarf stars, describing how they are identified and characterized, and the main properties of the observed population. …

The white dwarf cooling anomaly is an additional cooling delay that has been observed for ultramassive forms of these compact stellar remnants. [1][2] As a white dwarf cools, …

Mar 11, 2024 · The discovery that some white dwarfs cool more slowly suggests these stars may be billions of years older than estimated. This finding requires new age-calculation methods for …

Apr 18, 2024 · A new study suggests that some white dwarfs undergo a process that slows down their cooling and makes them appear younger than they are. This could affect the age …

3 days ago · A newly investigated ultra-massive white dwarf may provide the best opportunity to study the interior of a white dwarf through its pulsations.

White dwarfs are thought to be the final evolutionary state of all stars whose mass is not high enough to supernova — more than 97 percent of the stars in our galaxy. White dwarfs have …

Dec 1, 1999 · By adding the one billion years it took the cluster to form after the Big Bang, astronomers found that the age of the white dwarfs agrees with previous estimates that the …

6 days ago · Here we provide an observational overview of white dwarf stars, describing how they are identified and characterized, and the main properties of the observed population.

Irvine, Calif., Feb. 13, 2025 — Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected could provide a stellar environment …

May 14, 2015 · White dwarfs are the burned-out relics of stars that rapidly lose mass, cool down, and shut off their nuclear furnaces. As these glowing carcasses age and shed weight, their …

2 days ago · But surprisingly, some white dwarf planets might be able to support life after all. A new study compares possible planets around white dwarfs with similar planets around sun-like …

3 days ago · After a couple of successful Kickstarters for versions of its book-sized smart telescope, DwarfLab opted to jump straight into production for the Dwarf III. We've recently …

1 day ago · White Dwarf 510 is packed with content, and this issue puts the spotlight on the new edition of the Middle-earth Strategy Battle Game.