Polaris A





Star Log

Chemical Make-Up:
Iron Abundance - (Fe/H = 0.0)
Carbon Abundance - (C/H = -0.4)
Nitrogen Abundance - (N/H = +0.4)
Oxygen Abundance - (O/H = -0.2)
Over abundance of Nitrogen
Location in Space:
434 light-years from the Sun
27’09” (0.4525 Degrees) off North
Spectrum Analysis:

Nitrogen Spectrum
Stellar Classification:
F-G supergiants
Photographs:
The Polaris star system, as seen within the Ursa Minor constellation and up close. Credit: NASA, ESA, N. Evans (Harvard-Smithsonian CfA), and H. Bond (STScI)
Time exposure centered on Polaris, the North Star. Notice that the closer stars are to Polaris, the smaller the circles they describe. Stars at the edge of the frame make much larger circles. Credit: Bob King
References
EarthSky. (n.d.). Polaris is the North Star. Retrieved from http://earthsky.org/brightest-stars/polaris-the-present-day-north-star
The Emission Spectra of Various Atoms. (n.d.). Retrieved from http://www.astronomy.ohio-state.edu/~pogge/Ast350/Labs/Lamps/
Harvard. (n.d.). The chemical composition of Polaris. Retrieved from http://adsabs.harvard.edu/abs/1986PASP...98..442L
Universe Today. (n.d.). What Are The Most Famous Stars? Retrieved from http://www.universetoday.com/45775/famous-stars/

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