News tagged with dwarf galaxies
Astronomy team discovers nearby dwarf galaxy
(PhysOrg.com) -- A team led by UCLA research astronomer Michael Rich has used a unique telescope to discover a previously unknown companion to the nearby galaxy NGC 4449, which is some 12.5 million light years ...
Feb 08, 2012 |
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The Helix Nebula in new colors
(PhysOrg.com) -- ESO's VISTA telescope, at the Paranal Observatory in Chile, has captured a striking new image of the Helix Nebula. This picture, taken in infrared light, reveals strands of cold nebular gas ...
Jan 19, 2012 |
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Origin of thermonuclear supernova discovered
(PhysOrg.com) -- Using NASA’s Hubble Space Telescope, astronomers have solved a longstanding mystery on the type of star, or so-called progenitor, which caused a supernova seen in a nearby galaxy. The ...
Jan 11, 2012 |
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Little galaxies are big on dark matter
Dark matter... It came into existence at the moment of the Big Bang. Within its confines, galaxies formed and evolved. If you add up all the parts contained within any given galaxy you derive its mass, yet ...
Dec 30, 2011 |
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Ultra-compact dwarf galaxies are bright star clusters
(PhysOrg.com) -- Astronomy & Astrophysics is publishing a new statistical study of the so-called 'ultra-compact dwarf galaxies' (UCDs), which are still mysterious objects. A team of astronomers has invest ...
Dec 19, 2011 |
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A beast with four tails
(PhysOrg.com) -- The Milky Way galaxy continues to devour its small neighbouring dwarf galaxies and the evidence is spread out across the sky.
Nov 30, 2011 |
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Physicists set strongest limit on mass of dark matter
Brown University physicists have set the strongest limit for the mass of dark matter, the mysterious particles believed to make up nearly a quarter of the universe. The researchers report in Physical Review Le ...
Nov 23, 2011 |
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Hubble finds stellar life and death in a globular cluster
(PhysOrg.com) -- A new NASA Hubble Space Telescope image shows globular cluster NGC 1846, a spherical collection of hundreds of thousands of stars in the outer halo of the Large Magellanic Cloud, a neighboring ...
Nov 22, 2011 |
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Hubble uncovers tiny galaxies bursting with starbirth in early Universe
(PhysOrg.com) -- Using its infrared vision to peer nine billion years back in time, the NASA/ESA Hubble Space Telescope has uncovered an extraordinary population of tiny, young galaxies that are brimming with ...
Nov 10, 2011 |
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Andromeda dwarf galaxies help unravel the mysteries of dark matter
Yep. It’s that time of year again. Time to enjoy the Andromeda Galaxy at almost every observing opportunity. But now, rather than just look at the nearest spiral to the Milky Way and sneaking a peak at ...
Nov 08, 2011 |
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Ancient white dwarf stars
(PhysOrg.com) -- Pushing the limits of its powerful vision, NASA's Hubble Space Telescope uncovered the oldest burned-out stars in our Milky Way Galaxy in this image from 2002. These extremely old, dim "clockwork ...
Nov 03, 2011 |
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A star with spiral arms
For more than four hundred years, astronomers have used telescopes to study the great variety of stars in our galaxy. Millions of distant suns have been catalogued. There are dwarf stars, giant stars, dead ...
Nov 01, 2011 |
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How the Milky Way killed off its satellites
(PhysOrg.com) -- Two researchers from Observatoire Astronomique de Strasbourg have revealed for the first time the existence of a new signature of the birth of the first stars in our galaxy, the Milky Way. ...
Oct 19, 2011 |
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Dark matter mystery deepens
(PhysOrg.com) -- Like all galaxies, our Milky Way is home to a strange substance called dark matter. Dark matter is invisible, betraying its presence only through its gravitational pull. Without dark matter ...
Oct 17, 2011 |
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Is M85 missing a black hole?
The conventional wisdom of galaxies is that they should have a central massive black hole (CMBH). The presence of such objects has been confirmed in our own galaxy as well as numerous other galaxies, including ...
Oct 17, 2011 |
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