News tagged with host galaxy
Related topics: galaxies , black holes
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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Planets that have no stars: New class of planets discovered
(PhysOrg.com) -- University of Notre Dame astronomer David Bennett is co-author of a new paper describing the discovery of a new class of planets -- dark, isolated Jupiter-mass bodies floating alone in space, ...
May 18, 2011 |
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Hubble observations of supernova reveal composition of 'star guts' pouring out
Observations made with NASA's newly refurbished Hubble Space Telescope of a nearby supernova are allowing astronomers to measure the velocity and composition of "star guts" being ejected into space following ...
Sep 02, 2010 |
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Giant Galaxy Hosts the Most Distant Supermassive Black Hole
(PhysOrg.com) -- University of Hawaii (UH) astronomer Dr. Tomotsugu Goto and colleagues have discovered a giant galaxy surrounding the most distant supermassive black hole ever found. The galaxy, so distant ...
Sep 02, 2009 |
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Refined Hubble Constant narrows explanations for dark energy
Whatever dark energy is, explanations for it have less wiggle room following a Hubble Space Telescope observation that has refined the measurement of the universe's present expansion rate to a precision where ...
May 07, 2009 |
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Massive black holes halt star birth in distant galaxies
Astronomers, using the European Space Agency's (ESA) Herschel Space Observatory, have shown that the number of stars that form during the early lives of galaxies may be influenced by the massive black holes ...
May 09, 2012 |
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Astronomers using Hubble discover quasars acting as gravitational lenses
(PhysOrg.com) -- Astronomers using NASA's Hubble Space Telescope have found several examples of galaxies containing quasars, which act as gravitational lenses, amplifying and distorting images of galaxies ...
Mar 15, 2012 |
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The survivors of a 13 billion year old massacre
(PhysOrg.com) -- Our Milky Way galaxy is surrounded by some 200 compact groups of stars, containing up to a million stars each. At 13 billion years of age, these globular clusters are almost as old as the ...
Feb 14, 2012 |
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New images capture 'stealth merger' of dwarf galaxies
New images of a nearby dwarf galaxy have revealed a dense stream of stars in its outer regions, the remains of an even smaller companion galaxy in the process of merging with its host. The host galaxy, known ...
Feb 08, 2012 |
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Space Image: Ring of fire
(PhysOrg.com) -- This composite image shows the central region of the spiral galaxy NGC 4151. X-rays (blue) from the Chandra X-ray Observatory are combined with optical data (yellow) showing positively charged ...
Dec 28, 2011 |
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Planets smashed into dust near supermassive black holes
(PhysOrg.com) -- Fat doughnut-shaped dust shrouds that obscure about half of supermassive black holes could be the result of high speed crashes between planets and asteroids, according to a new theory from ...
Oct 28, 2011 |
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Close encounters of the galactic kind
(PhysOrg.com) -- Astronomers have used a large survey to test a prediction that close encounters between galaxies can trigger the rapid growth of supermassive black holes. Key to this work was Chandra's unique ...
Oct 26, 2011 |
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Galaxy mergers not the trigger for most black hole feeding frenzies
(PhysOrg.com) -- A survey of distant galaxies using the Hubble Space Telescope has put another nail in the coffin of the theory that galaxy mergers are the main trigger for turning quiescent supermassive black ...
Oct 14, 2011 |
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Cosmic weight watching reveals black hole-galaxy history
(PhysOrg.com) -- Using state-of-the-art technology and sophisticated data analysis tools, a team of astronomers from the Max Planck Institute for Astronomy has developed a new and powerful technique to directly ...
Sep 30, 2011 |
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INTEGRAL observations suggest unified model for Active Galactic Nuclei requires a rethink
Scrutinizing a large sample of Active Galactic Nuclei with INTEGRAL, astronomers have found that, unexpectedly, sources affected by stronger absorption at lower energies show an excess emission in the hard ...
Aug 03, 2011 |
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