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and Cosmology

Extragalactic Astronomy and Cosmology: An Introduction

Extragalactic Astronomy and Cosmology: An Introduction

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3.2 Elliptical Galaxies<br />

91<br />

Fig. 3.5. Different types of elliptical galaxies. Upper left: the<br />

cD galaxy M87 in the center of the Virgo galaxy cluster;<br />

upper right: Centaurus A, a giant elliptical galaxy with a very<br />

distinct dust disk <strong>and</strong> an active galactic nucleus; lower left:<br />

the galaxy Leo I belongs to the nine known dwarf spheroidals<br />

in the Local Group; lower right: NGC 1705, a dwarf irregular,<br />

shows indications of massive star formation – a super star<br />

cluster <strong>and</strong> strong galactic winds

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