Imaginea Astronomica a Zilei

Descopera cosmosul! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

April 9, 1998
See Explanation.  Clicking on the picture will download 
 the highest resolution version available.

Quasar in an Elliptical Galaxy
Credit: J. S. Dunlop, R. J. McLure (U. Edinburgh), HST, NASA

Explicatie: (Edit) Where do quasars live? Quasars are the brightest objects in the universe, so bright they can be seen from across the universe. Observations continue to show that most quasars are surrounded by a relatively faint nebulous patch. Astronomers are trying to identify the nature of these patches. The above false-color picture shows a central quasar embedded in an unusual elliptical galaxy. The galaxy is being gravitationally distorted by a neighboring galaxy. Recent evidence indicates that most quasars live near the centers of large, elliptical galaxies - even those quasars where no host galaxy could be found before. Quasars themselves are thought to result from matter falling toward supermassive black-holes.

Imaginea de maine: Comet Atmosphere

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Autori & editori: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
Reprezentanti tehnici NASA: Jay Norris. Specific rights apply.
Un serviciu al: LHEA at NASA/ GSFC
&: Michigan Tech. U.