A panchromatic definition of the kpc-scale relation between stellar mass and star formation in local grand-design spirals from Dustpedia
| Main Authors: | Enia Andrea Francesco Maria, Rodighiero Giulia, Morselli Laura |
|---|---|
| Format: | info Proceeding |
| Terbitan: |
, 2019
|
| Online Access: |
https://zenodo.org/record/3554493 |
Daftar Isi:
- The Main Sequence (MS) of star forming galaxies tells us that galaxies build their stellar masses in a steady mode, mainly dominated by secular processes. In this work, we study the MS relation on kpc/sub-kpc scales of 0.2-1.5 kpc in eight nearby grand-design spiral galaxies taken from the Dustpedia archive. We perform SED fitting with MAGPHYS, obtaining resolved physical properties for the sample from a panchromatic view of the physical processes. We observe the MS, with a scatter of 0.27, extending to values of SFR and stellar mass lower than previous findings (e.g. MaNGA, CALIFA) thanks to a reliable SED fitting extending to the outermost regions of the sample. We link these results with available archival observations of gas (CO, HI), recovering a strong correlation between ΣHI and the ΔMS (while there is none with ΣH2), and a clear correlation between the gas fraction and ΔMS, and a less clear and highly scattered relation between SFE and ΔMS.