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The NASA-$\it{TESS}$ mission presents a treasure trove for understanding thestars it observes and the Milky Way, in which they reside. We present a firstlook at the prospects for Galactic and stellar astrophysics by performinginitial asteroseismic analyses of bright ($G < 11$) red giant stars in the$\it{TESS}$ Southern Continuous Viewing Zone (SCVZ). Using three independentpipelines, we detect $\nu_{\mathrm{max}}$ and $\Delta\nu$ in 41% of the 15,405star parent sample (6,388 stars), with consistency at a level of $\sim 2\%$ in$\nu_{\mathrm{max}}$ and $\sim 5\%$ in $\Delta\nu$. Based on this, we predictthat seismology will be attainable for $\sim 3\times10^{5}$ giants across thewhole sky, subject to improvements in analysis and data reduction techniques.The best quality $\it{TESS}$-CVZ data, for 5,574 stars where pipelines returnedconsistent results, provide high quality power spectra across a number ofstellar evolutionary states. This makes possible studies of, for example, theAsymptotic Giant Branch bump (AGBb). We demonstrate that mixed $\ell=1$ modesand rotational splitting are cleanly observed in the 1-year data set. Bycombining $\it{TESS}$-CVZ data with $\it{TESS}$-HERMES, $\it{SkyMapper}$,APOGEE and $\it{Gaia}$ we demonstrate the potential for Galactic archaeologystudies using the data, which provides good age precision and accuracy thatreproduces the age of high $\mathrm{[\alpha/Fe]}$ stars and relationshipsbetween mass and kinematics from studies based on $\it{Kepler}$. Better qualityastrometry and simpler target selection than the $\it{Kepler}$ sample makesthis data ideal for studies of the local star formation history and evolutionof the Galactic disc. These results provide a strong case for detailedspectroscopic follow-up in the CVZs to complement that which has been (or willbe) collected by current surveys. [Abridged]

Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the $\it{TESS}$ Continuous Viewing Zones and beyond