Vast Cloud Of Antimatter Traced To Binary Stars Jan 10, 2008
This imbalance matches the distribution of a population of binary star systems that contain black holes or neutron stars, strongly suggesting that these binaries are churning out at least half of the antimatter, and perhaps all of it. "The reported Integral detection of an asymmetry represents a significant step forward toward a solution of one of the major outstanding problems in high-energy astrophysics. I think I can hear a collective sigh of relief emanating from the community," says Marvin... (Science Daily)
Odd Little Star Has Magnetic Personality Dec 7, 2007
They determined the spin and orbital periods of the binary star Paloma ... 9, 2003) A new type of star has been discovered lurking as a low mass component in a very compact binary star. (Science Daily)
The Constellation Canis Major Nov 9, 2007
Alpha Canis Majoris (Sirius) is a binary star system. Sirius A is the younger, hotter, and brighter star, with Sirius B playing the part of the dim companion. (Suite101.com)
Astronomers discover new planet Nov 7, 2007
Their latest find is a fifth planet to add to the four they had already discovered around 55 Cancri, a double or binary star in the constellation of Cancer. Gas giant. (BBC News -- Science)
Best-of-Breed Black Hole Nov 3, 2007
This artist's concept of the X-ray binary star system dubbed IC 10 X-1 depicts the biggest stellar-mass black hole (upper left), which weighs 24 to 33 times as much as the Sun. It's pulling gas from a companion Wolf-Rayet star (lower right). (SkyAndTelescope.com)
Refining Hipparcos's Star Distances Oct 5, 2007
In 2004, a team led by Xiaopei Pan and Michael Shao (Jet Propulsion Laboratory) reported their of the binary star Atlas, the second-brightest star in the Pleiades, which pointed to a distance of 440 7 light-years with a firm lower bound of 414 light-years. Then a group under David R. Soderblom (Space Telescope Science Institute) used the to measure the parallax of three cool dwarfs in the Pleiades; they got 439 10 light-years. (SkyAndTelescope.com)
UK stargazers enjoy 'Lucky' break Sep 4, 2007
The Cambridge team observed 48 stars, and by choosing only the clearest images, they saw that 10 of them were actually double, or binary stars. The scientists were looking for low-mass binary stars in particular. (BBC News -- Science)
Astronomers surprised by star with comet-like tail Aug 16, 2007
Unlike our solitary sun, Mira is a so-called binary star traveling through space orbiting a companion believed to be the burnt-out, dead core of a star, known as a white dwarf. Scientists think Mira in time will eject all its gas, leaving a colorful shell known as a planetary nebula that also gradually will fade leaving behind a white dwarf. (The Star Online, Malaysia -- News)
A star with a tail Aug 16, 2007
Mira, also known as Omicron Ceti, is act 00000564 ually a binary star system, made up of a large Mira A and a smaller Mira B. It's the standard example in astronomical texts of a class of pulsating stars in a late stage of evolution, when much of its mass is spat out in a dusty wind. In this case, Mira happens to be moving quite quickly; its stellar wind streams out behind it in a tail that can be seen in the ultraviolet range. (Nature News Service)
Stargazing season is in full bloom Jul 14, 2007
Stargazers will also get a good look at Ursa Major, Ursa Minor, Cassiopeia, binary star systems, emission nebulas - which are essentially glowing gas in space - and the summer triangle, which is composed of three bright stars from three different constellations - Cygnus, the swan, Lyre, the harp, and Aquila, the eagle. The astronomers will talk about sky lore and answer any questions about astronomy in general, Friend said. (Missoulian, MT)
Multiple and Binary Star Systems Jul 12, 2007
Most stars are actually binary stars or multiple star systems ... These systems are important to astronomers because we can measure the masses of stars by studying the orbital properties of binary stars, and there is no way to measure the mass of stars that are not part of binary star systems ... Optical doubles are not true binary stars because they are not orbiting each other. (Suite101.com)
Astronomical Clustering of Stars Jul 12, 2007
Stars cluster together in groups ranging from binary star systems to galactic and globular clusters of stars and at larger scales galaxies and clusters of galaxies ... They are not really clusters, but the smallest groupings of stars are binary star systems. (Suite101.com)
This Week's Sky at a Glance Jul 2, 2007
Have you ever tracked an eclipsing binary star all the way through eclipse. Tonight, if you're in North America, you have a shot at SZ Herculis high overhead dipping from magnitude 10. (SkyAndTelescope.com)
Macomb student travels to Kitt Peak for astronomy research Jun 27, 2007
VALPARAISO - Erin Lueck of Macomb is part of a Valparaiso University research team that will conduct its first on-site observations of dying stars and binary star systems from a research telescope at Kitt Peak National Observatory in Arizona this July. Lueck, a junior physics major who is enrolled in Valparaiso's interdisciplinary honors college - Christ College, is participating in her second summer of astronomy research at the university. (Macomb Journal, IL)
Super-heavy stars found in Milky Way Jun 8, 2007
Another binary star near the A1 first system is also expected to have considerably high masses, but those are not yet available. Scientists believe the local universe could be home to stars as heavy as 150 times the mass of the sun. (Globe and Mail)
A Dwarf in the Desert, or Not? Jun 7, 2007
Others say it's so massive it should be tagged as a brown dwarf a "failed star." In that case, XO-3b and its sun would comprise something of a binary star system. But did it form that way. (SkyAndTelescope.com)
Massive Stars Battle Each Other With Extreme Solar... Jun 1, 2007
An artist's depiction of the binary star system LH54-425; the larger star's stellar wind overwhelms the smaller's, blowing it backwards. An artist's depiction of the binary star system LH54-425; the larger star's stellar wind overwhelms the smaller's, blowing it backwards. (Fox News)
Astronomers study giant binary star system Jun 1, 2007
ATLANTA, GA, United States (UPI) -- U.S. astronomers have determined, for the first time, the properties of a rare, extremely massive, and young binary star system. The system is located in the Large Magellanic Cloud galaxy and the binary consists of two O-stars, the most massive and luminous types of stars in the universe. (Monsters and Critics.com)
NASAs FUSE finds two stars merging into one SuperStar May 31, 2007
NASA scientists have found a binary star system where its two stars will eventually merge to create one star that could be over 80 times the size of our Sun, which would make it one of the largest stars in the Milky Way galaxy. Related stories. (iTWire)
NASA'S Fuse Satellite Catches Collision of Titans May 29, 2007
May 28 /PRNewswire-USNewswire/ -- Using NASA's Far Ultraviolet Spectroscopic Explorer (FUSE) satellite and ground-based telescopes, astronomers have determined, for the first time, the properties of a rare, extremely massive, and young binary star system. The system, known as LH54-425, is located in the Large Magellanic Cloud, a satellite galaxy of our Milky Way. (PR Newswire)
Stars could create 'super sun' May 29, 2007
Channel 4 - News - Stars could create 'super sun. Stars could create 'super sun. (Channel 4 News)
Detecting Planets Orbiting Stars May 1, 2007
Think about a binary star system. If both stars have the same mass, they will orbit a point half way between them. (Suite101.com)
Hubble Space Telescope Reveals The Aftermath Of 'Star Wars' Apr 21, 2007
In this artist's impression of the binary star system RS Ophiuchi hydrogen-rich gas transferred from a red giant onto the surface of a white dwarf has just exploded ... More probable is that the environment into which the material is ejected is denser in some directions (most likely the plane of the binary star orbit) than others. (Science Daily)
Observing Virgo Apr 18, 2007
The next brightest star in Virgo is the binary star Gamma Virginis, or Porrima. Porrima is magnitude 2. (Suite101.com)
SKYWALKER'S TWIN SUNS LIKELY IN OUR GALAXY Mar 31, 2007
" Trilling and his colleagues are reporting their find in Sunday's edition of the Astrophysicial Journal. With the Spitzer's heat-seeking infrared eye, they have surveyed 67 binary star systems at distances from 50 to 200 light-years from Earth and detected the planet-forming disks of dust and rock around nearly half of them. In some binaries, the two stars are so tightly coupled that they fly closer together than the 93 million miles between our Earth and our sun. Other binary pairs may exist... (San Francisco Chronicle)
Massive explosion from tiny star system Mar 14, 2007
Images are evidence in favor of cyclic evolution of binary stars ... A type of binary star system known to erupt in small frequent explosions every few weeks is now known to occasionally erupt in much bigger, cataclysmic blasts as well every 10,000 years or so, according to a new study ... Images from NASAs confirmed that a shell of gas detected four years ago is left over from a large explosion of a binary star system called Z Camelopardalis, located some 530 light years away. (MSNBC -- Technology)
Double-star Systems Cycle Between Big And Small Blasts Mar 9, 2007
"The new images are the strongest evidence yet in favor of the cyclic evolution scenario of these binary stars," said lead author Mike Shara of the American Museum of Natural History in New York. "It's gratifying to see such strong evidence for this theory finally emerge after all this time.". (Science Daily)
Super view of supernova Mar 2, 2007
One recent calculation (see #1, below), suggests that this three-ring circus grew from the collision of two stars (a binary star) long before the supernova. But it ain't necessarily so, says Kirshner. (Why Files)
VLTI: Amber penetrates to the heart of the stars Mar 2, 2007
It then becomes possible to probe the formative regions of planets, to observe the winds of very rapidly rotating stars, to study the different types of matter ejected by a massive star, to separate the two components of a tight binary star and directly visualise the evolution of a nova only a few days after its explosion. One of the results presented in Astronomy physics concerns the eruption on February 12, 2006, of the recurrent nova, RS Oph, only 25 years after a similar eruption which was... (EurekAlert!)
First X-Ray Detection Of A Colliding-Wind Binary Beyond Milky Way Feb 21, 2007
The binary star system, known as HD 5980, contains two stars weighing about 50 and 30 times the mass of our Sun. Each star radiates more than a million times as much light as the Sun. (Science Daily)
The Brightest Stars Feb 10, 2007
It is a binary star that lies 41 light-years distant. Rigel is a blue-white supergiant that makes up the lower right corner of the constellation Orion. (Suite101.com)
Dr. Frankenstein stars electrify partners Jan 10, 2007
This artists concept shows an interacting binary star system known as a polar ... Kafka and her colleagues analyzed four sets of highly energetic binary star systems, known as polars, to pin down the effects of white dwarfs on their stellar neighbors ... Kafka and her colleagues studied their target binary star systems using ground-based telescopes at Kitt Peak and the European Southern Observatorys Very Large Telescope in Chile. (MSNBC -- Technology)
> read more Jan 9, 2007
A team of astronomers have been keeping their eye on a peculiar eclipsing binary star inside the Orion Nebula (M42) ... Using several ground-based telescopes in Arizona and Chile, a group led by Phillip Cargile (Vanderbilt University) has monitored an eclipsing binary star in the Orion Nebula (M42) that confounds stellar-evolution models. (SkyAndTelescope.com)
No Matter Their Size Black Holes 'Feed' In The Same Way Dec 29, 2006
An accreting black hole and a binary star. (Credit: R. Hynes). (Science Daily)
The Topsy-turvy Galaxy Nov 29, 2006
Astronomers suspect that they might be black holes with masses of perhaps a few hundred times the mass of our Sun each, that formed as part of a binary star system. How such objects are created out of ordinary stars cannot be conclusively explained by current models. (Science Daily)
Gamma-ray Observatory Catches New Erupting Black Hole Nov 29, 2006
Comparing the shape of the light curve to others on file revealed that this was an eruption thought to come from a binary star system in which one component is a star like our Sun whereas the other is a black hole. In these systems, the gravity of the black hole is ripping the Sun-like star to pieces. (Science Daily)
The Einstein Dilemma Nov 7, 2006
Mordehai Milgrom began his career studying objects called ultracompact neutron stars in binary star systems. In 1979, sensing the need for a new challenge, he bundled his family and headed on sabbatical to Princeton University, one of the world's leading centers for the study of galaxies. (Discover Magazine)
How Matter Behaves In Disc Around A 'Be Star' Oct 6, 2006
ScienceDaily: How Matter Behaves In Disc Around A 'Be Star. How Matter Behaves In Disc Around A 'Be Star. (Science Daily)
Stellar Vampires Unmasked Oct 5, 2006
These enigmatic objects are thought to be created in either direct stellar collisions or through the evolution and coalescence of a binary star system in which one star 'sucks' material off the other, rejuvenating itself. As such, they provide interesting constraints on both binary stellar evolution and star cluster dynamics. (Science Daily)
Astronomers spot space pinwheels Sep 5, 2006
The binary in the pinwheels cannot be directly observed because it is shrouded in dust, but Tuthill and his colleagues William C. Danchi at NASA Goddard Spaceflight Center and John Monnier at the University of Michigan, recognized by the spiral tails that they were looking at a colliding wind binary because they had reported the first such spiral nebula in 1999 associated with the binary star system WR 104 ... Massive binary star systems like those in the Quintuplet Cluster explode three times... (MSNBC -- Technology)
Worth its SALT| Aug 19, 2006
Astronomers at South Africa's premier telescope site made public on Wednesday their first serious scientific results a study of a binary star system 400 light years away from earth ... O'Donoghue said the observations of a "polar" binary star system containing a compact star called a white dwarf star, which has used its original store of nuclear energy before shrinking, and a relatively ordinary companion were the best of its kind made so far ... He said the binary star which Salt studied,... (iAfrica.com)
Universe may be 15.8 billion years old Aug 8, 2006
Using the data obtained from observation by telescopes located in Hawaii and other places, the scientists in this research team recalculated the distance between the earth and a binary star in the Triangulum ... Previously, the distance between the earth and the binary star was calculated on the basis of Hubble constant which is a key to determining the universe's expansion rate and its age. (People's Daily Online, China)
A bigger, older universe? Aug 8, 2006
The researchers looked at a binary star system in M33 where the stars eclipsed each other every five days ... Stanek said his team plan to follow up their finding with distance measurements for either another binary star system in M33 or to look for a binary system in another , perhaps. (MSNBC -- Technology)
Oddball Objects: Neither Stars or Planets Aug 6, 2006
Instead, scientists think the twins formed the same way that many binary star systems do, when a contracting gas cloud splits in two before condensing into a stellar core. "We are resisting the temptation to call it a 'double planet' because this pair probably didn't form in the way that planets in our solar system did," said ESO astronomer and study team member Valentin Ivanov. (Space.com)
Stellar Survivor: Brown Dwarf Outlasts Red Giant Aug 3, 2006
Now scientists have discovered an unusual binary star system consisting of a brown dwarf (a pseudostar 55 times the size of Jupiter but still too small to reliably fuse hydrogen) and a white dwarf. "Such a system must have had a very troubled history," says Pierre Maxted of Keele University in the United Kingdom who led the observations. (Scientific American)
Explosive-star mystery solved Jul 24, 2006
The binary star system is located in the constellation Ophiuchus, about 5,000 light-years away -- very close by astronomical standards. "We have a ringside seat for this very important event," Barry told SPACE.com. (SportsIllustrated.CNN -- Racing)
Nuclear Explosion On A Dead Star Jul 21, 2006
The binary star system itself would be at the centre but is invisible in this image. (Image: NRAO/AUI/NSF). (Science Daily)
The brightest dot shining in the evening sky this month is Jupiter Jul 1, 2006
Today's Globe Opinion Politics Magazine Education Science NECN Special reports Obituaries. Jupiter gives birth to Red Junior. (Boston Globe -- Local)
GEO600 starts continuous search for Gravitational Waves Jun 27, 2006
The observation of waves from binary star systems allows us to determine the expansion of the Universe with a high degree of accuracy. All this will substantially broaden our knowledge of the creation, composition, development, and fate of the Universe. (EurekAlert!)
Magnetic Fields Nudge Matter Into Black Holes Jun 24, 2006
This is an artist's representation of GRO J1655-40, a binary star system observed in April 2005 by Chandra. This binary consists of a black hole and a normal star shown in blue. (Space.com)
Lighter side of black holes Jun 23, 2006
An artist's representation shows the binary star system observed by NASA. This binary consists of a black hole and a normal star shown in blue. Gas is being pulled away from the star and falling onto a red disk spinning around the black hole. (Toronto Star)
Scientists Find The Reason Behind Black Holes' Light Shows Jun 23, 2006
The X-ray spectrum (see inset) of a binary star system consisting of a black hole and a normal star indicates that turbulent winds of multimillion degree gas are swirling around the black hole. As the illustration shows, much of the hot gas is spiraling inward toward the black hole, but about 30% is blowing away. (Science Daily)
Magnetism gives black holes a boost Jun 22, 2006
M. Weiss / CXC / NASAThis is an artist's representation of GRO J1655-40, a binary star system observed in April 2005 by Chandra. This binary consists of a black hole and a normal star, shown in blue. (MSNBC -- Technology)
New Study Suggests 'Planemos' May Spawn Planets And Moons Jun 7, 2006
Researchers think the pair probably formed together, just like a binary star system, instead of the companion forming in a disk around the brown dwarf. Moreover, Jayawardhana says, it is quite likely that smaller planets or moons could now form in the disk around each one. (Science Daily)
Andromeda in better focus Jun 7, 2006
Analysis of the X-ray data reveals the point sources are associated with binary star systems made up of either a neutron star or black hole that is siphoning matter away from the surface of a normal star. As the matter falls towards the neutron star or black hole, it is heated by friction to tens of millions of degrees until it emits X-rays. (USA Today -- Tech)
Mini-solar systems spark scientific debate Jun 6, 2006
Researchers suspect both objects formed at once by condensing out of an interstellar cloud of material exactly how binary star systems are thought to form, and unlike the typical process of planet birth. The brown dwarf is about 25 times the mass of Jupiter but still only about 8 percent as massive as our sun. (MSNBC -- Technology)
Smaller solar system Jun 6, 2006
Researchers suspect both objects formed at once by condensing out of an interstellar cloud of material exactly how binary star systems are thought to form and unlike the typical process of planet birth. The brown dwarf is about 25 times the mass of Jupiter but still only about 8% as massive as our Sun. (USA Today -- Tech)
Astronomers Discovery Very High Energy Gamma-ray Emission From Microquasar May 21, 2006
Microquasars are binary star systems, composed of a massive ordinary star and a compact object, which can be either a neutron star or a black hole ... Only one other binary star system (LS 5039) is known to emit VHE gamma-rays. (Science Daily)
Do Israel's Jews face 1938 again? May 6, 2006
That binary star system remains today, but a tipping point has just been reached. With every year, as the Jewish population continues to rise in Israel and decline in America (and in the rest of the Diaspora), Israel increasingly becomes, as it was at the time of Jesus, the center of the Jewish world. (Buffalo News -- Opinion)
Deadly Astronomical Event Not Likely To Happen In Our Galaxy, Study Finds Apr 20, 2006
(January 8, 1999) -- A binary star system in a nearby galaxy may bring astronomers closer to understanding the nature of dark matter, according to Ohio State University. . (Science Daily)
The Sun's New Exotic Neighbor: A Very Cool Brown Dwarf Mar 23, 2006
(January 9, 2003) -- A new type of star has been discovered lurking as a low mass component in a very compact binary star. . (Science Daily)
Astronomers, At Last, Get A Chance To Size Up A Brown Dwarf Mar 20, 2006
Binary star systems -- when two stars are in mutual orbit -- are helpful to astronomers when they can be viewed edge-on and one star eclipses the other as they perform their celestial waltz ... In other words, they did not form together in the same coalescing mass of gas and dust, as most binary star systems do, but formed at different times and places, and somehow became companions locked in mutual orbit. (Science Daily)
New Map Of Milky Way Reveals Millions Of Unseen Objects Feb 25, 2006
A cataclysmic variable is a binary star system containing a relatively normal star and a white dwarf, which is a stellar ember of a star like the Earth's sun that has run out of fuel. On its own, a white dwarf is dim. (Science Daily)
Most Milky Way Stars Are Single Feb 8, 2006
"It's certainly possible for binary star systems to 'dissolve' into two single stars through stellar encounters," said astronomer Frank Shu of National Tsing Hua University in Taiwan, who was not involved with this discovery ... Planet formation is difficult in binary star systems where gravitational forces disrupt protoplanetary disks. (Science Daily)
Astronomers Had it Wrong: Most Stars are Single (SPACE.com / LiveScience.com) Jan 31, 2006
"There are theories that can form binary stars and theories that can form single stars, but there none that explain why you form more singles than binaries," Lada told SPACE.com ... Although some studies suggest that planet formation around binary star systems is than previously thought, most astronomers believe that making planets is still easier around single stars. (RSS - Yahoo News - Science)
