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Latest Local Group Stories

Most Massive Binary Candidate Identified
2013-04-17 04:52:37

A team of astronomers, led by Hugues Sana of the University of Amsterdam, has observed a binary star that potentially weighed 300 to 400 times the mass of our Sun at its birth.

Blue Supergiant Star Born In The Wild Discovered
2013-04-11 15:09:53

A duo of astronomers has discovered a Blue Supergiant star located far beyond our Milky Way Galaxy in the constellation Virgo

X-Ray Emissions In Young Metal-Poor Stars Similar To Metal-Rich Stars
2013-04-03 08:10:18

Astronomers have found that a region of space known as the Wing has fewer “metals” (elements with more than two protons in the nucleus) compared to most other areas within our own Milky Way galaxy. There are also relatively lower amounts of gas, dust and stars in the Wing compared to the Milky Way.

Distant Black Hole Wakes Up For A Snack
2013-04-02 13:51:29

Astronomers using the European Space Agency's (ESA) Integral space observatory have watched as a black hole woke up to feed on a low-mass object that strayed just a little too close.

Hunting High-mass Stars With Herschel Space Observatory
2013-03-27 13:09:59

Spanning almost 200 light-years, W3 is one of the largest star-formation complexes in the outer Milky Way, hosting the formation of both low- and high-mass stars.

Young Supernova Remnant Discovered By NASA’s Swift Satellite
2013-03-16 10:18:20

NASA’s Swift space observatory detected the previously undiscovered remains of a supernova during an extensive X-ray survey of the Milky Way.

Are We There Yet? Astronomers Measure Distance To Neighboring Galaxy
2013-03-06 12:13:52

Astronomers have now accurately measured the distance to our neighboring galaxy, the Large Magellanic Cloud after using observations of eclipsing binaries.

The Milky Way's Violent Past
2013-03-06 04:20:09

As astronomers peer out into the distant reaches of the Universe they find that some galaxies are emitting enormous amounts of radiation from their cores.

Scientists Recreate Spiral Arms Of Ancient Milky Way
2013-03-04 19:11:57

A pair of French scientists has been able to recreate how the Milky Way’s spiral arms looked millions of years ago.

Stellar Motions In Outer Halo Reveal Evidence Of Milky Way Evolution
2013-02-22 11:40:05

Astronomers using NASA's Hubble Space Telescope to peer deep into the vast stellar halo that envelopes our galaxy have uncovered tantalizing evidence for the possible existence of a shell of stars that are a relic of cannibalism by our Milky Way.


Latest Local Group Reference Libraries

45_9843bacae4e6aaccde9ad6442185fc8e
2010-09-16 15:14:03

The two Magellanic Clouds (or Nubeculae Magellani), composed of the Large Megellanic Cloud and the Small Magellanic Cloud, are irregular dwarf galaxies visible in the southern hemisphere. They are members of our Local Group and orbit the Milky Way galaxy. Persian astronomer Al Sufi, in 964, was the first to have written anything about the Magellanic Clouds proving they have been known since early time amongst the Middle East peoples. Sufi, in his Book of Fixed Stars, calls the clouds...

67_62ac767a66aa75de2afaba1deb05cb8c
2010-09-13 17:05:00

The Local Group, compromising more than 30 galaxies (including dwarf galaxies and the Milky Way), is a group of galaxies with a gravitational center located somewhere between the Milky Way and the Andromeda Galaxy. With a binary (dumbbell) shape and a total mass of (1.29 ± 0.14) × 1012M the Local group covers a 10 million light-year diameter. The local group is part of the Virgo Supercluster. The two largest galaxies in the group are the Milky Way and the Andromeda both Spiral...

0_0c560ad0ccf4d719031a7916437450a5
2010-09-13 16:59:36

The IC 342/Maffei Group (also known as the IC 342 Group or the Maffei 1 Group) is the closest group of galaxies to the Local Group. The member galaxies are both concentrated around the two brightest galaxies of IC 342 and Maffei 1. The group can therefore be described as a binary group. Along with many others the group is located in the Virgo Supercluster.

6_11b0e50afd172f6a61aeda24e25504702
2004-10-19 04:45:42

Ring Galaxy -- A subclass of interacting galaxies, ring galaxies, provides a unique laboratory for studying unusually large bursts of non-nuclear star formation. The rings in these systems are often large (10s of kiloparsecs) and contain what appear to be associations of giant H{\small II} regions. As a basis for future modeling of star forming regions in observed ring galaxies we present a series of combined n-body/gas numerical experiments on ring formation and evolution. Three...

6_d430450f9e0cfd67807619c4bc1fbdf32
2004-10-19 04:45:41

Irregular Galaxy -- In astronomy, a class of galaxy with little structure, which does not conform to any of the standard shapes in the Hubble classification. The two satellite galaxies of the Milky Way, the Magellanic Clouds, are both irregulars. Some galaxies previously classified as irregulars are now known to be normal galaxies distorted by tidal effects or undergoing bursts of star formation (see starburst galaxy). ----- NASA Click here to learn more on this topic from...

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Word of the Day
postliminy
  • In Roman antiquity, the return of a person who had been banished, or taken prisoner by an enemy, to his old condition and former privileges.
  • In international law, that right by virtue of which persons and things taken by an enemy in war are restored to their former status when coming again under the power of the nation to which they belonged.
The word 'postliminy' comes from a Latin word meaning 'threshold'.