A fundamental relation between the metallicity, gas content, and stellar mass of local galaxies
| Speaker | Talk Date | Talk Series |
|---|---|---|
| Matt Bothwell (Cavendish/KICC) | 5 February 2014 | Institute of Astronomy Seminars |
Abstract
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.
Presentation
© 2009 - 2018 Institute of Astronomy, University of Cambridge
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA • Tel:+44 (0)1223 337548 • Fax:+44 (0)1223 337523
Information provided by webmaster@ast.cam.ac.uk • Privacy • Accessibility • Press • Site Map