A 'Quick Look' at All-Sky Galactic Archeology with TESS: 158,000 Oscillating Red Giants from the MIT Quick-Look Pipeline

Abstract

We present the first near all-sky yield of oscillating red giants from the prime mission data of NASA's Transiting Exoplanet Survey Satellite (TESS). We apply machine learning towards long-cadence TESS photometry from the first data release by the MIT Quick-Look Pipeline to automatically detect the presence of red giant oscillations in frequency power spectra. The detected targets are conservatively vetted to produce a total of 158,505 oscillating red giants, which is an order of magnitude increase over the yield from Kepler and K2 and a lower limit to the possible yield of oscillating giants across TESS's nominal mission. For each detected target, we report effective temperatures and radii derived from colors and Gaia parallaxes, as well as estimates of their frequency at maximum oscillation power. Using our measurements, we present the first near all-sky Gaia-asteroseismology mass map, which shows global structures consistent with the expected stellar populations of our Galaxy. To demonstrate the strong potential of TESS asteroseismology for Galactic archeology even with only one month of observations, we identify 354 new candidates for oscillating giants in the Galactic halo, display the vertical mass gradient of the Milky Way disk, and visualize correlations of stellar masses with kinematic phase space substructures, velocity dispersions, and $\alpha$-abundances.

23 pages, 20 figures. Accepted in The Astrophysical Journal. In press. Table 1 is provided as an ancillary file on this page

References in corpus (26)

• The Transiting Exoplanet Survey Satellite
• The K2 Mission: Characterization and Early results
• Gaia Early Data Release 3: The astrometric solution
• A new implementation of the infrared flux method using the 2MASS catalogue
• The connection between stellar granulation and oscillation as seen by the Kepler mission
• Asteroseismology and Gaia: Testing Scaling Relations Using 2200 Kepler Stars with TGAS Parallaxes
• On the Formation of Galactic Thick Disks
• Young [$\alpha$/Fe]-enhanced stars discovered by CoRoT and APOGEE: What is their origin?
• The age-metallicity structure of the Milky Way disk
• The Gaia-Kepler Stellar Properties Catalog. II. Planet Radius Demographics as a Function of Stellar Mass and Age
• Estimating distances from parallaxes. II. Performance of Bayesian distance estimators on a Gaia-like catalogue
• The asteroseismic potential of TESS: exoplanet-host stars
• Kinematic modelling of the Milky Way using the RAVE and GCS stellar surveys
• Age velocity dispersion relations and heating histories in disc galaxies
• Oscillating K giants with the WIRE satellite: determination of their asteroseismic masses
• The K2 Galactic Archaeology Program Data Release 1: Asteroseismic results from Campaign 1
• The Asteroseismic Target List (ATL) for solar-like oscillators observed in 2-minute cadence with the Transiting Exoplanet Survey Satellite (TESS)
• Ages and masses of million Galactic disk main sequence turn-off and sub-giant stars from the LAMOST Galactic spectroscopic surveys
• Detection and characterisation of oscillating red giants: first results from the TESS satellite
• Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the $TESS$ Continuous Viewing Zones and beyond
• A Search for Red Giant Solar-like Oscillations in All Kepler Data
• The K2 Galactic Archaeology Program Data Release 2: Asteroseismic results from campaigns 4, 6, & 7
• Seismic performance
• A seismic scaling relation for stellar age II: The red giant branch
• Clumpiness: Time-domain classification of red-giant evolutionary states
• FliPer${}_{Class}$: In search of solar-like pulsators among TESS targets