Galaxies & Cosmology winter trimester  2008 - 2009

 syllabus   &  course expectations   &    the official time
safety, tardy, classroom computer use, and honesty

Universe/publisher link:  register as a student to use the resources

 Astronomy Picture of the Day        the latest astrophysics discoveries
  what's up in the 
sky this week
 

  Saturday,
February 14
Sunday,
February 15
Monday,
February 16
Tuesday,
February 17
Wednesday,
February 18
Thursday,
February 19
class
Saturday meeting schedule
Sunday meeting schedule Monday meeting schedule
 
 
project presentations during final exam period 
reading
(always done before class)


 29(4-5) on the early Big Bang

[29(1-3) are still highly speculative]
 
 
 
things you should know the answer to before coming to class


a review question:
what are the three pieces of evidence for the Big Bang? or in other words, what observations does the standard model of the Big Bang explain?

why did fusion not begin until about 3 minutes after the moment of the Bang?

why did fusion end  at about  15 minutes after the moment of the Bang? 
note that the temperature then was still about
5 x 108 K, far hotter than that at the center of the sun
(see figure 29-8)

were you able to derive the time-temperature relations (why are there 2 different ones?) from the equations for a flat universe that we discussed in class on thursday?




homework
(written assignments
to be turned in)


finish the Big Bang timeline you worked on Friday if you can

please email me with questions or places you got stuck...



web stuff


 
 
 
 
lab


 
 
 
 
news & discoveries


 
 
 
 
 
 
Monday,
February 9
Tuesday,
February 10
Wednesday,
February 11
Thursday,
February 12
Friday,
February 13
class
 
 
 
 
 you will create a timeline for important events in the universe's history

timeline grid

timeline instructions
reading
(always done before class)
 
 
 
 
28(4-5, 8)
about the CBR

29(5) about the early Big Bang
things you should know the answer to before coming to class see last Friday

we will get to "derive" the differences between the 3 kinds of universe today


28(7)


homework
(written assignments
to be turned in)

bring to class:
use the current value of the Hubble constant to determine the critical density in units of kg/m
3
spend 5 - 10 minutes thinking about how you would be able to detect that the earth's surface is curved by doing some kind of experiment

how does dark energy change the Newtonian cosmologies?



web stuff
 
 
 
 
 
lab
have you decided on final project?
approval deadline = tomorrow
 
 
 
 
news & discoveries
 
 
 
 

 
  Monday,
February 2
Tuesday,
 
February 3
Wednesday,
February 4
Thursday,
February 5
Friday,
February 6
class





reading
(always done before class)
4(8)
on tides

26 (6,7,9)
on clustering in galaxies and the consequences

Galaxies:
Classification, Formation,
& Evolution


also, read at least 3 of the Hubble references at the very end to see how this important telescope has pushed the edges of knowledge in this field
28(1,2,3,6)
26(4)
things you should know the answer to before coming to class
why/how the moon raises earth tides

why are spirals spirals and ellipticals ellipticals?
is it genes?
is it environment?
Is it evolution (of one into another)?




be able to describe the properties of the 3 kinds of universes  discused in yesterday's reading

know the various methods astronomers used to measure distances to galaxies

be able to descibe the properties of isotropy and homogeneity
[end of section 28(2)]

homework
(written assignments
to be turned in)






web stuff




our closest neighbor:
the Canis major dwarf

the Sagittarius dwarf has been totally disrupted by the Milky Way
lab





news/discoveries
of the week






astro pages for january 2009
astro pages for december 2008
astro pages for november 2008
astro pages for october 2008 
   astro pages for september 2008
astro pages for august 2008