A fundamental relation between the metallicity, gas content, and stellar mass of local galaxies

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• Matt Bothwell (Cavendish/KICC)
• Wednesday 05 February 2014, 13:45-14:15
• Sackler Lecture Theatre, IoA.

If you have a question about this talk, please contact ma557.

Recent results have suggested that the well known mass-metallicity relation has a strong dependence on the star formation rate, to the extent that a three dimensional fundamental metallicity relation exists which links the three parameters with minimal scatter. In this talk, I describe work using a large sample of local galaxies observed in atomic hydrogen from the ALFALFA survey to demonstrate, for the first time, that a similar fundamental relation (the HI-FMR) also exists between stellar mass, gas-phase metallicity, and HI mass. This latter relation is likely more fundamental, driving the relation between metallicity, SFR and mass.

This talk is part of the Institute of Astronomy Seminars series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Seminars
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
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• Sackler Lecture Theatre, IoA

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