Barrera-Ballesteros, Jorge K.; Heckman, Timothy M.; Zhu, Guangtun B.; Zakamska, Nadia L.; Sánchez, Sebastian F.; Law, David; Wake, David; Green, Jenny E.; Bizyaev, Dmitry; Oravetz, Daniel; Simmons, Audrey; Malanushenko, Elena; Pan, Kaike; Roman Lopes, Alexandre and Lane, Richard R.
(2016).
|
PDF (Version of Record)
- Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (6MB) | Preview |
| DOI (Digital Object Identifier) Link: | https://doi.org/10.1093/mnras/stw1984 |
|---|---|
| Google Scholar: | Look up in Google Scholar |
Abstract
We present the stellar surface mass density versus gas metallicity (Σ*-Z) relation for more than 500 000 spatially resolved star-forming resolution elements (spaxels) from a sample of 653 disc galaxies included in the SDSS IV MaNGA survey. We find a tight relation between these local properties, with higher metallicities as the surface density increases. This relation extends over three orders of magnitude in the surface mass density and a factor of 4 in metallicity. We show that this local relationship can simultaneously reproduce two well-known properties of disc galaxies: their global mass–metallicity relationship and their radial metallicity gradients. We also find that the Σ*-Z relation is largely independent of the galaxy's total stellar mass and specific star formation rate (sSFR), except at low stellar mass and high sSFR. These results suggest that in the present-day universe local properties play a key role in determining the gas-phase metallicity in typical disc galaxies.
| Item Type: | Journal Item |
|---|---|
| Copyright Holders: | 2016 The Authors |
| ISSN: | 1365-2966 |
| Keywords: | imaging spectroscopy; galactic abundances; galaxies; interstellar medium |
| Academic Unit/School: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Research Group: | Health and Wellbeing PRA (Priority Research Area) |
| Item ID: | 48516 |
| Depositing User: | David Wake |
| Date Deposited: | 20 Feb 2017 10:43 |
| Last Modified: | 01 May 2019 17:49 |
| URI: | http://oro.open.ac.uk/id/eprint/48516 |
| Share this page: |     |
Metrics
Altmetrics from Altmetric | Citations from Dimensions |
Download history for this item
These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.
CORE (COnnecting REpositories)
CORE (COnnecting REpositories)