Red-giant and main-sequence solar-like oscillators in binary systems
revealed by ESA Gaia Data Release 3 -- Reconstructing stellar and orbital
evolution from binary-star ensemble seismology
Binary systems constitute a valuable astrophysics tool for testing our
understanding of stellar structure and evolution. Systems containing a
oscillating component are interesting as asteroseismology offers independent
parameters for the oscillating component that aid the analysis. About 150 of
such systems are known in the literature. To enlarge the sample of these
benchmark objects, we crossmatch the Two-Body-Orbit Catalogue (TBO) of Gaia
DR3, with catalogs of confirmed solar-like oscillators on the main-sequence and
red-giant phase from NASA Kepler and TESS. We obtain 954 new binary system
candidates hosting solar-like oscillators, of which 45 and 909 stars are on the
main sequence and red-giant, resp., including 2 new red giants in eclipsing
systems. 918 oscillators in potentially long-periodic systems are reported. We
increase the sample size of known solar-like oscillators in binary systems by
an order of magnitude. We present the seismic properties of the full sample and
conclude that the grand majority of the orbital elements in the TBO is
physically reasonable. 82% of all TBO binary candidates with multiple times
with APOGEE are confirmed from radial-velocity measurement. However, we suggest
that due to instrumental noise of the TESS satellite the seismically inferred
masses and radii of stars with νmax≲30μHz could be
significantly overestimated. For 146 giants the seismically inferred
evolutionary state has been determined and shows clear differences in their
distribution in the orbital parameters, which are accounted the accumulative
effect of the equilibrium tide acting in these evolved binary systems. For
other 146 systems hosting oscillating stars values for the orbital inclination
were found in the TBO. From testing the TBO on the SB9 catalogue, we obtain a
completeness factor of 1/3.Comment: under review for publication in A&A (22 pages + 4 pages of appendix,
21 figures, 33 pages of tables in the Appendix