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M86-NGC4438 complex

Spectacular H-alpha Image Shows Evidence for Galaxy Collision and Gas Heating

Jeffrey Kenney, Tomer Tal

A new deep and wide-field H-alpha image of the elliptical galaxy M86 shows shows a spectacular complex of warm gas filaments, providing striking evidence for a collision between M86 and the disturbed spiral NGC4438, as well as possible evidence for the gravitational heating of the ISM in an elliptical galaxy.

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Image Credits: (header) Image of prominence, SOHO (ESA & NASA)

News

05.15.2012 Chasing Galaxies - The Legacy of "Brian Tinsley's clever wife"
But what if a galaxy gets either brighter or fainter with age? What if it changes its shape from eon to eon? Then all bets are off, and the universe’s destiny is far harder to determine in this way. Cosmologists learned this unhappy fact—galaxies change!—by the 1970s, and the person primarily responsible for establishing it was Beatrice Tinsley.
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Beatrice Tinsely at Yale 1977
05.14.2012 Astronomy Graduate Student Jedidah Isler has been Inducted into the Edward Alexander Bouchet Graduate Honor Society
Graduate Student Jedidah Isler has been inducted into the Edward Alexander Bouchet Graduate Honor Society at the ninth annual Bouchet Leadership Conference on Diversity in Graduate Education, held at Yale in March.
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05.01.2012 ‘Ridiculously’ Dim Bevy of Stars Found Beyond Milky Way
Former Yale postdoc Ricardo Munoz has discovered the least luminous globular cluster around the Milky Way, hinting that many more such globular clusters may soon be discovered.
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The Muñoz 1 globular cluster is seen to the right of the Ursa Minor dwarf galaxy in this image from the Canada-France-Hawaii Tel

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© 2012 Yale University. All Rights Reserved.

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© 2012 Yale University. All Rights Reserved.