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by imafish
September 18th, 2013, 10:02 pm
Forum: 2014 Question Marathons
Topic: Astronomy C Question Marathon
Replies: 81
Views: 14104

Re: Astronomy C Question Marathon

maybe|1.1x10^7 m/s away from "Larcie" Gah, I feel like such a newbie (cuz I am...) From the 4000K tomato I looked at the blackbody curves the wavelength is .89um = 8900A. Shift equation: Z=(change in wavelength)/(unshifted wavelength)=(7000-8900)/8900= -0.213 Velocity = Zc = (-0.213)(3.00E8) = -6.4...
by imafish
September 18th, 2013, 9:41 pm
Forum: 2014 Study Events
Topic: Astronomy C
Replies: 132
Views: 24914

Re: Astronomy C

Hi, I'm new to astronomy and I was wondering if there's any good practice problem resources. I've found a lot of sample tests and there's loads of questions on the question marathons but very few of them show work...I am having lots of trouble trying to figure out how they arrived at a lot of these ...
by imafish
September 18th, 2013, 9:27 pm
Forum: 2014 Question Marathons
Topic: Astronomy C Question Marathon
Replies: 81
Views: 14104

Re: Astronomy C Question Marathon

ngc3132, the star in the image is about absolute magnitude 0.3 (at least the progenitor star is) Edit: sorry people I am having major technical difficulties with my "hide" function so I'm just writing the answer out for the sake of transparency Hi, How did you get absolute magnitude 0.3? Is it a gi...

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