ay45c2-page10 - emission lines fλ "Continuum...

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Unformatted text preview: emission lines fλ "Continuum level" absorption lines 0 Wavelength The units of f are ergs per cm (collecting area) per s per wavelength. (This is the same f that we previously saw in the UVB magnitude table). 2 2.3 Velocity measurements Velocity comes in two avors: i) radial velocity: measured by Doppler shifts vr ϕ vt velocity v  =  o = z = vr in nonrelativistic limit o o c Between successive emissions of \crests" (time intervals  =c) the emitter moves a distance v=( =c), while the wave moves a distance  , so  = + v c   =v ) c 0 0 0 0 0 0 19 0 ...
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This note was uploaded on 12/29/2011 for the course AST 350 taught by Professor Dion during the Fall '09 term at SUNY Stony Brook.

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