That is also what I got, I believe you are supposed to use the redshift to find distance through Hubble's, then plug it into distance mod. This gives you m = 41.5-19.3 = 22.2. I think the key flipped their signs, since then 41.5+19.3 = 60.8Anyone feel like solving this problem: "Given that a Type Ia Supernova has a redshift of z = .47 and a peak absolute magnitude of -19.3, determine its
peak brightness as viewed from earth. Assume a Hubble’s Constant of ~70 km/s/Mpc" and telling me what you get? I keep getting an apparent magnitude 22.22 but the key for the test says 48-72, its from Fayetteville-Manlius btw.
Find the period of the curve from the graph. Assuming this is the standard (simplified) version, the peaks of the graph equal the orbital velocity. Take those and calculate the orbital circumference (multiply them), and go from their to the orbital radius (equals semi-major axis for a circular orbit, which is usually assumed for the sake of the problem).Hi, I'm still a little new to this area of physics and am looking for some help with a specific kind of problem.
I'm given a radial velocity curve for a binary system and asked to find the semi-major axis for this. I understand there's a relationship here but I can't seem to quite get it. Any help with an example would be extremely appreciated!! I've been stuck on it for a while now and after looking through a bunch of pages online I'm still at a loss :/
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