The methods and study progress about estimating metallicities of galaxies (I): Calibration methods

Details The methods and study progress about estimating metallicities of galaxies (I): Calibration methods The methods and study progress about estimating metallicities of galaxies (I): Calibration methods

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pabei..24..335l&link_type=abstract

Progress in Astronomy (ISSN 1000-8349), Vol. 24, No. 4, p. 335 - 361 (2006)

Astronomy and Astrophysics

Astrophysics

2

Astrophysics, Metallicities, Review, Galaxies, Chemical Evolution

Scientific paper

Metallicity is a fundamental parameter to trace the formation and evolution of galaxies. With the developed observational ability and facilities, the metallicities of more and more galaxies were obtained, from the local dwarfs and spirals to the star-forming galaxies in the intermediate redshift universe, and even to high redshift Lyman Break Galaxies. Moreover, the corresponding photoionization models have been developed a lot. These can help well to understand the assembly history of stellar masses and metals of galaxies. The authors review the many methods used to estimate the gas-phase oxygen abundances of the interstellar medium of galaxies, including the Te-method, the R23-method, and other "strong-line-ratio" methods, and then give the related analytic fitting formulas. They also introduce the physical properties of ionized nebulae, and the methods using photoionization models to estimate metallicities of galaxies. Finally, they review the methods to estimate C and N abundances of galaxies.

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