1) Which of the following is not a general difference between a planet and a star?
A) Planets are smaller than stars.
B) Planets are dimmer than stars.
C) All planets are made of rock, and all stars are made of gas.
D) Planets orbit stars, while
Introduc0on to Astronomy
Unique number 46675
Professor: John Scalo
To do: Read the syllabus, keep the schedule handy, skim through the textbook
Astronomy: The Universe a
Properties of Light (Ch.2)
Proper&es of lightwavelength, frequency, energy, speed. 3 slides.
Proper&es of Light (ch. 2 in text)
! The only things we can learn about objects outside our
solar system are from the lig
Angular and linear resolution
Angular and linear sizes
Angular measure-illustration from your textbook.
You are probably familiar with
degrees. Now get used to a much
smaller unit of angular measure:
Dont worry if you cant
understand what this
pretty picture represents,
unless it is the day before
the next exam.
A more important question
is why the authors insist
on showing this form of
Measuring the Stars
The Solar Neighborhood
By neighborhood, we mean the stars close enough
to measure certain quantities accurately. Since many
of them rely on distances, in eect we mean stars
for which we have
AST 301: The Sun (Chapter 8): A condensed summary
This brief summary covers most of the topics early in Chapter 8, as well as neutrinos, but well leave more
about energy transport and nuclear reactions for slides and textbook readings. The readings list
The sun is the only star that we can resolve in detail.
Other stars appear only as points of light, unresolved.
But nearly everything wed like to know about the Sun
is hidden deep in the interior. How can you learn about the interior?
Measuring the Properties of Stars (Chapter 9)
Although we can be certain that other stars are as complex as the Sun, we will try to reduce their description
to a fairly small number of properties, since these are the only attributes of s
AST 301 Review for Exam 1 (Part 1)
The exam covers Chapter 1, sections 1.1, 1.2, but none of the rest of Chapter 1, and all of
Chapter 2 except for the Doppler effect (p.25) and High-Energy Astronomy (p. 35).