AST 201 - Cosmology - Hw #5

AST 201 - Cosmology - Hw #5 - Sean Vanderwall Cosmology...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Sean Vanderwall Cosmology Problem Set 5 November 2, 2006 Problems: HW 5: 20.38, 20.48, 21.35, 21.42. 20.38 – a) Galaxy NGC 4594 is classified as a Sa galaxy because it is a very spherically based spiral galaxy with an extremely large bulge and has a disk that has retained a fair amount of dust in its spiral arms, but is still very tight and the disk does not extend very far outwards. b) Galaxy NGC 6744 is classified as a Sc galaxy because it has a very centralized, but small spherical center, and also contains long spiral arms that are made up of a number of stars and a very large amount of dust. c) Galaxy NGC 4414 is classified as a Sb galaxy because it has a bit tighter spiral arms compared to that of NGC 6744, but not as tight as NGC 4594. The bulge is fairly large, but not over-dominant with respect to the rest of the galaxy; and the amount of dust in the outer disk is condensed somewhat towards the center, yet still retains its large-disked characteristics. d)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

AST 201 - Cosmology - Hw #5 - Sean Vanderwall Cosmology...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online