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by tad_k_22
March 1st, 2016, 10:10 am
Forum: 2016 Study Events
Topic: Astronomy C
Replies: 149
Views: 25008

Re: Astronomy C

Separate question: When you are given a radial velocity graph that only has phase across the bottom, how do you determine the period? The phase is a portion of the period, right? But how would you determine what the actual period is in units of time? There would have to be other information given. ...
by tad_k_22
February 23rd, 2016, 10:43 am
Forum: 2016 Study Events
Topic: Astronomy C
Replies: 149
Views: 25008

Re: Astronomy C

Regarding HR 8799, the webinar slides say this system has 5 planets, but I'm only seeing info that says 4 planets. Is 4 correct, or am I missing a planet somewhere? ;)
That's an error, there are indeed only 4 planets (discovered to date) in the system.
by tad_k_22
December 17th, 2015, 9:47 pm
Forum: 2016 Study Events
Topic: Astronomy C
Replies: 149
Views: 25008

Re: Astronomy C

The webinar slides have now been posted: https://www.soinc.org/astronomy_c.

Thanks for catching that, /u/sciolymom!
by tad_k_22
November 17th, 2015, 11:15 am
Forum: 2016 Study Events
Topic: Astronomy C
Replies: 149
Views: 25008

Re: Astronomy C

Just added the Harvard ExoLab to the list of resources on soinc.org: https://www.cfa.harvard.edu/smgphp/othe ... l_lab.html
by tad_k_22
September 30th, 2015, 12:10 pm
Forum: 2016 Study Events
Topic: Astronomy C
Replies: 149
Views: 25008

Re: Astronomy C

Which exoplanet book did you get?
by tad_k_22
May 20th, 2015, 10:02 am
Forum: 2015 Study Events
Topic: Astronomy C
Replies: 147
Views: 24931

Re: Astronomy C

The National exam is posted on the AAVSO website: http://www.aavso.org/science-olympiad-2015.
by tad_k_22
August 22nd, 2014, 11:31 am
Forum: 2015 Study Events
Topic: Astronomy C
Replies: 147
Views: 24931

Re: Astronomy C

The sample exam for this year is now posted: http://www.aavso.org/science-olympiad-2015.

It should give you a hint on the new topics! I would use it as an introduction to the types of questions that might be asked, as I'm sure scioly.org's test exchange will have plenty of good practice tests.
by tad_k_22
May 21st, 2014, 1:13 am
Forum: 2014 Study Events
Topic: Astronomy C
Replies: 132
Views: 24456

Re: Astronomy C

The 2014 Nationals Exam is up: http://www.aavso.org/science-olympiad-2014.

I hope everyone enjoyed it!
by tad_k_22
November 26th, 2013, 12:15 am
Forum: 2014 Study Events
Topic: Astronomy C
Replies: 132
Views: 24456

Re: Astronomy C

@meltingface: they're the same book, but the text on "Modern Stellar Astrophysics" takes only the chapters from the "Introduction to Modern Astrophysics" related to stellar structure and evolution. If you're planning on studying astronomy in undergrad, I'd get the full text.
by tad_k_22
November 10th, 2013, 11:26 pm
Forum: 2014 Study Events
Topic: Astronomy C
Replies: 132
Views: 24456

Re: Astronomy C

@Crazy Puny Man: The real answer is, nobody knows. We also don't have a good idea at this point how supernovae actually evolve. Maybe you can help solve the problem!

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