Rapid Supernova: New Class Of Exploding Star? Nov 6, 2009
30, 2007) New, detailed observations of a supernova show evidence that a white dwarf star "fed" off a red giant to gain the critical mass needed for explosion. When white dwarf stars explode, they leave behind ... 4, 2009) The European Space Agency's XMM-Newton orbiting X-ray telescope has uncovered a celestial Rosetta stone: the first close-up of a white dwarf star, circling a companion star, that could explode into a. (Science Daily)
New type of supernova discovered Nov 6, 2009
A new type of supernova the explosive death of a star has been discovered in which helium detonates on the surface of a white dwarf star. The , dubbed SN2002bj, was first observed seven years ago in the galaxy NGC 1821 by amateur astronomers, but was misclassified as a Type II supernova. (MSNBC -- Technology)
> read more Oct 22, 2009
Among the new planet finds was a super-Earth orbiting the orange dwarf star Gliese 667 C, a member of a triple-star system. In this illlustration, the planet's nearby host star is out of the frame to the upper left. (SkyAndTelescope.com)
32 New Planets Found Outside Our Solar System Oct 20, 2009
The HARPS team selected like our sun, as well as lower-mass dwarf stars, to watch for wobbles. Red dwarf stars were targets because they are dimmer, low-mass stars, which makes it easier to detect wobbles from low-mass satellite planets, said team member Nuno Santos, of the University of Porto, Portugal ... For example, a team using HARPS had previously found several low-mass planets orbiting Gliese 581, a red dwarf star some 20. (National Geographic)
scientists discover hell planet Oct 7, 2009
Computer models of COROT-7b, a planet orbiting an orange dwarf star in the constellation Monoceros, 490 light years away, suggest that the world has a surface temperature hot enough to boil rock. The research, , Missouri, conjures up a vision of hell. (Harper's Magazine)
White dwarf's slow spin not just skin-deep Sep 25, 2009
By borrowing a technique used by seismologists to probe Earth's interior, astronomers have profiled for the first time the internal rotation of a white dwarf star, and find that it rotates at the same slow speed as its surface ... Using this technique on white dwarf star PG 1159-035 Fontaine and colleagues found that the star's interior rotates at the same slow speed as its surface. (Astronomy Now Online)
Night Sky Viewing for October 2009 Sep 24, 2009
Then, there is a much smaller faint dwarf star that is orbiting around it. The Aquarius Constellation. (Suite101.com)
First Full Simulation Of Star's Final Hours Sep 23, 2009
23, 2009) The precise conditions inside a white dwarf star in the hours leading up to its explosive end as a Type Ia supernova are one of the mysteries confronting astrophysicists studying these massive stellar explosions ... 28, 2007) White dwarf stars pack one and a half times the mass of the sun into an object the size of Earth. (Science Daily)
First Habitable Earthlike Planet Found, Experts Say Sep 18, 2009
The most Earthlike planet yet found, it orbits a red dwarf star and likely contains liquid water, said the European astronomers who made the discovery ... The planet is named after the red dwarf star it orbits, Gliese 581, which is among the hundred closest stars to Earth. (National Geographic)
Astronomers uncover celestial Rosetta Stone Sep 12, 2009
Using ESA's XMM-Newton space telescope, astronomers have uncovered the first close-up of a white dwarf star circling a companion star that could explode in a dramatic supernova event in a few million years ... Using ESA's XMM-Newton space telescope, astronomers have uncovered the first close-up of a white dwarf star circling a companion star that could explode in a dramatic supernova event in a few million years ... Artist impression of what the giant white dwarf star and its companion HD 49798... (Astronomy Now Online)
Refurbished Hubble gets off to a flying start Sep 12, 2009
Using ESA's XMM-Newton space telescope, astronomers have uncovered the first close-up of a white dwarf star circling a companion star that could explode in a dramatic supernova event in a few million years. Refurbished Hubble gets off to a flying start EMILY BALDWIN COOPERASTRONOMY NOWPosted: September 9, 2009. (Astronomy Now Online)
Dwarf Star Could Explode In Few Million Years Sep 4, 2009
Celestial Rosetta Stone: White Dwarf Star, Circling Companion Star, Could Explode In A Few Million Years ... Celestial Rosetta Stone: White Dwarf Star, Circling Companion Star, Could Explode In A Few Million Years ... 4, 2009) ESA's XMM-Newton orbiting X-ray telescope has uncovered a celestial Rosetta stone: the first close-up of a white dwarf star, circling a companion star, that could explode into a particular kind of supernova in a few million years. (Science Daily)
Variability in type Ia supernova Aug 21, 2009
Type 1a supernovae result from the violent explosion of a white dwarf star, and since their initial conditions are thought to be roughly the same in all cases, they tend to have the same luminosity ... This image based on a computer simulation of a type 1a supernova shows the turbulent and asymmetric flame of the runaway thermonuclear burning that consumes the white dwarf star. (Astronomy Now Online)
Variability Of Type 1a Supernovae Has Implications For Dark Energy Studies Aug 20, 2009
A type 1a supernova occurs when a white dwarf star acquires additional mass by siphoning matter away from a companion star ... The potential for systematic bias comes primarily from variation in the initial chemical composition of the white dwarf star ... In this image from a computer simulation, debris from a type 1a supernova explosion shows the asymmetric substructures that develop from the turbulent flame that consumes the white dwarf star. (Science Daily)
Dear alien, can I add you to Facebook? Aug 14, 2009
Dear alien, can I add you to Facebook. Dear alien, can I add you to Facebook. (Sydney Morning Herald -- Technology)
Betelgeuse, Red Supergiant In Constellation Orion, Has Shrunk By 15 Percent In 15 Years Jun 17, 2009
26, 2005) Observations of the white dwarf star, Sirius B, made with NASA's Far Ultraviolet Spectroscopic Explorer (FUSE) satellite give astronomers firm new evidence that mathematical models widely used to. (Aug. (Science Daily)
Planet Found Orbiting Same-Size Star May 30, 2009
The newfound gas giant, called VB 10b, orbits a red dwarf star, a relatively cool, small star less than half the mass of the sun. Although both are roughly the size of Jupiter, the planet orbits the star because the star is much more massive. (National Geographic)
World's Observatories Watching 'Cool' Star May 21, 2009
27, 2008) The world's major telescopes will be observing the white dwarf star IU Vir in the constellation Virgo for three weeks beginning on March 26. A white dwarf is a star that is dying. (Science Daily)
Sun's dippers raise riddle storms May 9, 2009
Question marks over sunspots reflect the continuing mystery of this ordinary little yellow dwarf star, one of millions of similar nondescript stars in the Milky Way galaxy. Yet the sun contains 98% of the total mass of the solar system, and its interior is so vast it can hold over 1. (Asia Times Online)
Bantamweight Planet and Three Dwarfs Apr 28, 2009
The dim dwarf star Gliese 581 and its retinue of planets ... The innermost planet circling the dwarf star Gliese 581 has a mass only 1. (SkyAndTelescope.com)
Youngest Supernova Remnant: Researchers 'Clear Away The Dust' To Get Better Look Apr 28, 2009
Their new data provides evidence that this remnant is from a type Ia supernova -- the explosion of a white dwarf star -- and raises questions about the ways in which magnetic fields affect the generation of the remnant's cosmic ray particles. NC State physicists Dr. Stephen Reynolds and Dr. Kazimierz Borkowski, with colleagues from Cambridge University and NASA, re-examined their original X-ray images of in an attempt to glean more information about the remnant's origins, rate of expansion, and... (Science Daily)
Can life thrive around a red dwarf star? Apr 10, 2009
Can life thrive around a red dwarf star ... Can life thrive around a red dwarf star ... The habitable zone (HZ) around a red (dM), orange (dK) and yellow (dG) dwarf star. (MSNBC -- Technology)
The most popular stars Apr 2, 2009
Once they discovered that there was a class of stars really big, called giants, they carved the universe up into dwarfs and giants, says Jim Holberg, a scientist who studies dwarf stars at the University of Arizona in Tucson ... Despite their name, most dwarf stars are not unusually small ... But within the large category of dwarf stars are other groups of stars. (Science News for Kids)
Super-sized Supernova: Scientists Observe Largest Exploding Star Yet Seen Mar 26, 2009
30, 2007) New, detailed observations of a supernova show evidence that a white dwarf star "fed" off a red giant to gain the critical mass needed for explosion. When white dwarf stars explode, they leave behind. (Science Daily)
Finding Twin Earths Is Harder Than Thought Mar 21, 2009
The study also considered planets orbiting red dwarf stars ... Astronomers could improve their chances of detecting the atmosphere by adding the signal from several transits, making red dwarf stars appealing targets because of their more frequent transits ... In contrast, an Earth orbiting a mid-sized red dwarf star would undergo a one-hour transit once every 10 days. (Science Daily)
Kepler's on a mission to discover 'Earths' Mar 5, 2009
In April 2007, European astronomers led by Stephane Udry of Switzerland's Geneva Observatory announced the detection of an Earth-size planet potentially in the habitable zone of the red dwarf star Gliese 581, about 20 light-years away. (One light-year is about 5. (USA Today -- Tech)
