Recent content by stardrop

Thanks for your help!

Thanks you two so much! Both of these concepts are a lot clearer to me now.

Homework Statement Show that we can calculate the distance of Sirius from us (in Ly) from the above data by two different methods. If the positions of the Sun and Sirius are interchanged, what will be the m and M values of each? Sun: m = -26.4; M = +4.6 Sirius: m = -1.4; M = +1.4...

Homework Statement One star is intrinsically 100 times brighter than the other. If the brighter star is twice as far away as the dimmer star, what is the difference in their m values and their M values. Homework Equations None were given. The Attempt at a Solution The equation...

Thank you! Thanks for the extended explanation and the link--both were very helpful! (:

Thanks so much! That's the answer I was looking for; now I'll read more about Wien's Displacement Law.

I meant how do you calculate the temperature of a star using λmax = Å. This is what my teacher wrote down on the board but he didn't explain it any further. I think maybe what he wrote means what equation do you use if the information you have is λmax IN Å, but I'm not sure. That's only what...

01. Can a star be moving faster than what Doppler effect calculations indicate? This was a discussion question I heard but I'm not sure I understand. Can anyone provide any sort of information about this? 02. Can someone explain this to me, too? "Hydrogen red line is shifted, but other...

I hope this is the right place to post this! I think so. I'd really be grateful if anyone can give me any information about this--especially help with the math involved. Homework Statement How to calculate the temperature of a star using--Homework Equations λmax = ÅThe Attempt at a Solution...