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Irregular galaxies are different from elliptical and spiral galaxies because?
Irregular galaxies lack a distinct shape or structure compared to the more organized elliptical and spiral galaxies. They often have higher levels of gas and dust, resulting in ongoing star formation and less defined arms or center. Irregular galaxies are typically smaller and less massive than their counterparts.
What is a central dominant galaxy?
A central dominant galaxy is typically the largest and most massive galaxy at the center of a galaxy cluster. It is surrounded by smaller satellite galaxies and can influence the dynamics and evolution of the entire cluster through its strong gravitational pull. These galaxies often exhibit unique properties compared to other galaxies in the cluster.
What are Spiral elliptical irregular and barred spiral are descriptions of?
Spiral, elliptical, irregular, and barred spiral are classifications of galaxies based on their shape and structure. Spiral galaxies have a distinct spiral structure with arms winding outward from the center, while barred spiral galaxies feature a central bar-shaped structure with arms extending from the ends of the bar. Elliptical galaxies are more rounded or elongated and lack the distinct features of spiral arms, while irregular galaxies do not fit into these specific categories and often have an irregular shape. These classifications help astronomers understand the formation and evolution of galaxies.
Which of these galaxies would you most likely find at the center of a large cluster of galaxies?
At the center of a large cluster, you'll usually find large and massive galaxies.
Where in space would you look for a globular cluster?
In the Milky Way galactic halo, orbiting the galactic center in a long elliptical orbit around the galactic center
Is there more than one kind of galaxy?
Yes, However all galaxies are the same (simplified): A bunch of solar systems turning around a massive black hole. The forms are often very different, you have elliptical (elliptic formed) galaxies, spiral ("arms" from the center turning around it, circular) galaxies and irregular (irregular ;P) galaxies.
Where are irregular galaxies found?
They are formed at the SHlT center
What is a central dominance?
A giant elliptical galaxy at the center of a dense cluster
How are the centers of many spiral galaxies similar to many elliptical galaxies?
Both have a huge black hole at their center.
Compare and contrast the three types of galaxies?
Galaxies that appear to have a bulge in the middle and arms that spherical outward, like pinwheels, are spherical. Elliptical galaxies look like round or flattened balls. Galaxies that do not have regular shapes are known as irregular galaxies.
What is the nearest rich cluster of galaxies?
The nearest cluster of galaxies is the "Virgo Cluster" discovered by Charles Messier in 1784. The Virgo cluster lies at/near the center of the Supercluster we belong to - also called the "Virgo Supercluster". Our "Local Group" (comprising of The Milky way, Andromeda, and another 25-30 smaller galaxies) is part of the Virgo Cluster. The center of the Virgo cluster is at a distance of about 18 Mpc (Mega parsecs) approx 60 Million lightyears from us [which translates to a 'redshift' of only z=0.004]. Ain't the universe huge? Note: There are quite a few 'groups of galaxies' between us and the center of Virgo Cluster.
Why are elliptical galaxies brightest towards the center?
The center is crowded with stars, and the number of stars decreases farther out.
