pjgscioisamazing wrote:Anybody have a value for the Mass of the Milky Way Galaxy? and mass/age/size of halo of M82 Cigar Galaxy?
andrewbji wrote:pjgscioisamazing wrote:Anybody have a value for the Mass of the Milky Way Galaxy? and mass/age/size of halo of M82 Cigar Galaxy?
Several sources say the Milky Way mass is 5.8 × 10^11 M☉, but I think that only consists of 120 kly radius from the center of MWG, but I don't know a more accurate number.
Also, I don't know whether it is possible to find the mass of the halo? I'd be interested in how you could possibly find that.
walkingstyx wrote:I am somewhat confused about your question about the halo of m82. I don't think it has a halo at all. I haven't seen a reference to its halo in the literature, and it's a starburst because it was gravitationally disturbed by another galaxy recently. Considering how much the rest of the galaxy was distorted, I don't think the halo survived, and since it takes an extremely long time to form a new halo, M82 should not have a halo.
E Edgar wrote:Hey, I just want to say that the Astronomy test was very impressive; easily the single best test I have seen at a Science Olympiad competition. I think most teams would agree that it was a very difficult test but that the questions were both interesting and meaningful. Thanks.
By the way, congratulations to the New York team that won the event. (we took 2nd)
walkingstyx wrote: Did anyone else here sign up to help with writing the test next year?
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