luminosity, parallax, stars, spectral class

2 Pages
62 Views
Unlock Document

Department
Astronomy & Astrophysics
Course
AST201H1
Professor
Stefan Mochnacki
Semester
Winter

Description
Lecture 8 -luminosity: how bright- how much light the star is emitting (all) -there are a few things u can tell by just looking at stars colour: blackbodies (thermal radiation) temperatures, Doppler shift (moving towards, away) if a star is blue, we know for sure it is: we cant say for sure because it could be hotter or its moving rapidly towards us Parallax -there are a great variety of techniques used to determine the distances to stars for nearby stars, we use parallax -a bigger jump distance difference- closer star, a smaller jump- further star STARS- continued -earth receives only a small fraction of the suns light this small fraction of light that we receive is called apparent brightness or appare
More Less

Related notes for AST201H1

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit