Chemical elements, exoplanets, Milky Way, stellar populations, Sun
The Solar neighborhood is the space associated with a cylinder centered at the Sun and perpendicular to the Milky Way disk. This Solar Cylinder is located at ∼8 kpc from the Galactic center, with a radius of 1 kpc. Hence, the Solar vicinity includes diverse physical entities that belong to the Galactic disk and halo, such as planets; stars of different masses, ages, and evolutionary stages, interstellar medium and HII regions, amongst others.
The Solar neighborhood contains mostly baryonic matter (stars and gas); the amount of dark matter is negligible inside it. The total mass surface density is roughly 50 M⊙ pc2, of which the stars take 80% and 20% is in gaseous material.
The Solar cylinder contains two main structures, first, a disk componentwhere approximately 95% of the total mass is found in Population I stars embedded in metal-rich gas....
References and Further Reading
- Carigi L, Peimbert M (2010) HII regions and the protosolar helium, carbon, and oxygen abundances in the context of galactic chemical evolution. ApJ submitted (arXiv:1004.0756)Google Scholar
- Matteucci F (2001) The chemical evolution of the galaxy. Kluwer Academic, New YorkGoogle Scholar
- Pagel BEJ (2009) Nucleosynthesis and chemical evolution of galaxies. Cambridge University Press, CambridgeGoogle Scholar
- Sparke L, Gallagher J (2007) Galaxies in the universe: an introduction. Cambridge University Press, CambridgeGoogle Scholar
- The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/