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.Anybody have a value for the Mass of the Milky Way Galaxy? and mass/age/size of halo of M82 Cigar Galaxy?
I upped my researching, and I found this number, 1.9 Trillion SOlar Masses, for the total mass of the Milky Way (Halo and Dark Matter included), and around 200 Billion Solar Masses for the Visible DiskSeveral 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.Anybody have a value for the Mass of the Milky Way Galaxy? and mass/age/size of halo of M82 Cigar Galaxy?
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.
Okay, I figured taht the halo didn't exist, as I have seen nothing about it, but it's always good to be sure just in case. Still haven't found anything about mass or age of M82 thoughI 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.
My friend was one of the kids on the winning team (ridiculously smart kid I must say), maybe I'll force him to register here and comment on the test, but he thought it was really good as well.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)
They asked people for help writing the test?!Did anyone else here sign up to help with writing the test next year?
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