Galaxies and Cosmology Flashcards
What is a Globular Cluster?
A group of old stars
What is an Open Cluster?
a group of young stars
what is a nembulae?
where stars are born
What is a planetry nebula?
where stars die
what are the three types of nebula?
Emmision, Reflection and Absorbtion.
What is Local Supercluster?
lots of local groups
What is a Local Group?
A group of Galaxies.
What are the four structures of galaxies?
Spiral
Barred Spiral
Elliptical
Irregular
What is a Lenticular Galaxy?
between an elliptical and a spiral galaxy in shape (SO)
What is Seyfert Galaxy?
side on Infra-radiation and X-ray
What is a Quasar galaxy?
In between a Seyfert and a Blazer, Ultra violet, was radio but red-shifted because its so far away (old)
What is a Blazer galaxy?
one jet of gamma ray straight towards us, very compact presumed a super massive black hole is at the centre.
