Sirius

Sirius

(Dog Star)

I happened to choose this star because I am a huge Harry Potter fan, so I thought, why not choose a star that has the name of Sirius? 

Sirius is derived from the Greek language and translates into "scorcher" or "glowing" because, it happens to be THE brightest star that is seen in the night sky! 

With a visual apparent magnitude of -1.46, it is almost twice as brightest as the next brightest star, Canopus.

Sirius appears bright because of its intense luminosity and because of how close it is to Earth. At a distance of 2.6 parasecs, it is one of Earth's closest neighbors.

Sirius is a binary star system and is composed of a spectral type, A1V (Sirius A) and a DA2 type (Sirius B).

Sirius A is about twice as massive as the sun and has a visual magnitude of 1.42

It's between 200 and 300 million years old. 

Sirius A is classified also as an Am star because the spectrum shows deep metallic absorption lines, indicating an element that's heavier than helium, such as iron.

Right ascension	06h 45m 08.91728s[2]
Declination	−16° 42′ 58.0171″[

http://astrobob.areavoices.com/astrobob/images/Spectra_emission_hydrogen_andiron.jpg

http://www.sterrenwachtrijswijk.nl/img/Sirius%20A%20en%20B.jpg

Sirius B used to be a red giant, but has since consumed all it's resources and now is a white dwarf. The star is primarily composed of a carbon-oxygen mixture that was generated by helium fusion in the progenitor star.

Carbon and Oxygen (along with helium)
http://www.uni.edu/morgans/astro/course/Notes/section1/comboem.jpg