Seminar - Astronomy Research Spring 2017
Finding velocities from redshift: z=(obs-rest)/rest ... v=d/t=zc [c=300,000 km/s]
Finding distance from redshit: Navigate. Use Excel.
Powers of Ten video
Waves - Wavelength/Amplitude/Frequency - Redshift
Pick a starting place in SDSS using constellations. This location will open up in SDSS Navigator. Record your RA and Dec.
Click on the box "Objects with spectra" and choose red boxes for several stars, galaxies and qso. For each object, click on "Explore" and then the "Interactive Spectrum" to examine the light from that object. Record the H alpha, the H beta and the H gamma wavelengths.
Our data of the range of Hydrogen lines - Blue circles = blueshifted; Red circles = redshifted
Astronomy Picture of the Day - The Big Picture
Light - Diffraction Grating - Spectra: continuous, absorption, emission
SDSS - Video #1; Video #2