User:Gaba p/Washington Photometric System

The Washington photometric system is a broadband photometric system, initially designed by G. Wallerstein and later developed by R. Canterna at the Kitt Peak National Observatory, aimed at obtaining accurate photometric temperatures, metal abundances, and a cyanogen blanketing index for G and K type giant stars.{{cite journal | url=http://adsabs.harvard.edu/abs/1976AJ.....81..228C | title=Broad-band photometry of G and K stars - The C, M, T/1/, T/2/ photometric system | author=R. Canterna | journal=Astronomical Journal | year=1976 | month=04 | volume=81 | pages=228–244 | doi=10.1086/111878| bibcode=1976AJ.....81..228C }} It is composed of four main filters: C, M, T1 and T2 of effective wavelengths 3910, 5085, 6330 and 7885 Å respectively. Most of its colors can be well transformed into related colors in the Cousins BVRI system.{{cite book | url=http://www.astrohandbook.com/ch02/bessell_photosystems.pdf | title=Standard Photometric Systems | publisher=Annual Review of Astronomy and Astrophysics | author=Michael S Bessell | year=2005}}

• [http://arxiv.org/abs/astro-ph/9809393]