News tagged with white dwarfs

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Image: March of asteroids across dying star

(Phys.org) —In an unexpected juxtaposition of cosmic objects that are actually quite far from each other, a newly released image from NASA's Wide-Field Infrared Survey Explorer (WISE) shows a dying star, ...

Dec 13, 2013
4.9 / 5 (7) 0 | with audio podcast

Can life emerge on planets around cooling stars?

(Phys.org)—Astronomers find planets in strange places and wonder if they might support life. One such place would be in orbit around a white or brown dwarf. While neither is a star like the sun, both glow and so could be ...

Nov 20, 2012
5 / 5 (8) 10 | with audio podcast

Ticking stellar time bomb identified (w/ Video)

(PhysOrg.com) -- "One of the major problems in modern astrophysics is the fact that we still do not know exactly what kinds of stellar system explode as a Type Ia supernova," says Patrick Woudt, from the University ...

Nov 17, 2009
4.8 / 5 (12) 0

How white dwarfs mimic black holes

(Phys.org)—A remarkable observation by astronomers from the University of Southampton has been published in one of the world's foremost astrophysics research journals.

Dec 17, 2012
4.8 / 5 (6) 8 | with audio podcast

The progenitor problem

With so much of our current understanding of the universe based on Type 1a supernovae data, a good deal of current research is focused upon just how standard these supposed standard candles are. To date, the ...

Nov 28, 2011
5 / 5 (8) 4 | with audio podcast

Solar systems around dead Suns?

(PhysOrg.com) -- Using NASA’s Spitzer Space Telescope, an international team of astronomers have found that at least 1 in 100 white dwarf stars show evidence of orbiting asteroids and rocky planets, suggesting ...

Apr 20, 2009
4.6 / 5 (16) 3

Feuding helium dwarfs exposed by eclipse

Researchers at the University of Warwick have found a unique feuding double white dwarf star system where each star appears to have been stripped down to just its helium.

May 24, 2011
4 / 5 (4) 2 | with audio podcast

World's observatories watching 'cool' star

The Whole Earth Telescope (WET), a worldwide network of observatories coordinated by the University of Delaware, is synchronizing its lenses to provide round-the-clock coverage of a cooling star. As the star ...

May 15, 2009
4.6 / 5 (18) 3

Einstein@Home detects unusual stellar pair

(PhysOrg.com) -- Neutron stars are quite unique: the material they are made of is packed much more densely than conventional matter. They rotate extremely fast about their own axis, emitting radiation in the ...

Apr 07, 2011
4.6 / 5 (9) 42 | with audio podcast

A cosmic holiday ornament, Hubble-style

(Phys.org)—'Tis the season for holiday decorating and tree-trimming. Not to be left out, astronomers using NASA's Hubble Space Telescope have photographed a festive-looking nearby planetary nebula called ...

Dec 18, 2012
5 / 5 (4) 1 | with audio podcast