Glossarbegriffe: Scheibengalaxie

Description: Eine Scheibengalaxie ist ein Galaxientyp mit der Form einer flachen Scheibe aus Sternen, Gas und Staub, die sich alle in kreisförmig und komplanar (d.h. in einer Ebene liegend) um das Zentrum der Galaxie bewegen. In diesen Scheiben gibt es oft Spiralarme und damit einhergehende Sternentstehungsaktivität. In den meisten Klassifikationsschemata für Galaxien werden Scheibengalaxien von elliptischen, irregulären und Zwerggalaxien unterschieden.

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

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This galaxy has a large bulge surrounded by a ring of dust creating an image similar to the mexican hat with the same name

Sombrero galaxy

Bildunterschriften: This prominent galaxy M 104 is often called the Sombrero galaxy due to its resemblance to the Mexican hat. This look is created by the thin disk oriented nearly edge-on, which appears illuminated by the dominant bulge. Both, the disk and bulge contain stars, but the stars in the bulge tend to be older, while the disk also harbors large amounts of dust and gas creating shadows. M 104 is located in the constellation Virgo approximately 50 light-years away. While some of the dots visible in the picture are foreground stars and others background galaxies, the majority are actually globular clusters, dense massive clusters of stars, associated with the Sombrero Galaxy.
Bildnachweis: ESO/P. Barthel credit link

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