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| Paper: |
Transformations in our Understanding of Galaxy Evolution |
| Volume: |
507, Multi-Object Spectroscopy in the Next Decade: Big Questions, Large Surveys, and Wide Fields |
| Page: |
217 |
| Authors: |
Bershady, M. A. |
| Abstract: |
A new generation of instruments has launched large surveys now mapping
galaxy evolution with single- and multi-object integral-field
spectrographs (IFS). These surveys form counterpoints to the mapping of
the Milky Way with multi-object stellar spectroscopy and the Gaia
satellite. Combined, they allow us to better place the Milky Way in
context of the galaxy population at z∼0; to understand if the
Milky Way is indeed a normal spiral; and to leverage its unique
archaeological record against observations of distant galaxies. These
studies illustrate opportunities awaiting next-generation instruments
and surveys that push to higher spectral resolution, lower
surface-brightness, and into the near and even mid-infrared. Here we
focus on the advantages of higher spectral resolution IFS, as enabled
by WEAVE. Ground-breaking science opportunities include characterizing
and kinematically resolving the ionized gas and stars in dynamically
cold galaxies. Such studies will benefit from increased sensitivity
both in S/N and line-diagnostics, pushing extragalactic observations
in integrated light much closer to where our understanding of Milky
Way chemo-dynamics is today. |
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