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Constraining stellar and orbital co-evolution through ensemble seismology of solar-like oscillators in binary systems: A census of oscillating red giants and dwarf stars in Gaia DR3 binaries
Context. Binary systems constitute a valuable astrophysics tool for testing our understanding of stellar structure and evolution. Systems containing at least one oscillating component are interesting in this regard because asteroseismology offers independent parameters for the oscillating component...
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Published in: | Astronomy and astrophysics (Berlin) 2024-02, Vol.682, p.A7 |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | Context.
Binary systems constitute a valuable astrophysics tool for testing our understanding of stellar structure and evolution. Systems containing at least one oscillating component are interesting in this regard because asteroseismology offers independent parameters for the oscillating component that aid in the analysis. Systems of particular interest include those with known inclinations. With ∼0.8 million binary candidates, the two-body orbit catalog (TBO) of
Gaia
Data Release 3 (DR3) substantially increases the number of known binaries and the quality of the astrometric data available for them.
Aims.
To enlarge the sample of these astrophysically valuable benchmark objects, we searched for new binary system candidates identified in the
Gaia
DR3 TBO, for which one component has a detection of solar-like oscillations reported in the literature.
Methods.
We cross-matched the TBO, the full non-single star (NSS) and eclipsing binary catalogs from
Gaia
DR3 with catalogs of confirmed solar-like oscillators in the main-sequence and red-giant phase from the NASA
Kepler
mission and stars in the Southern Continuous Viewing Zone of NASA TESS. The wealth of seismic information is used to characterize the oscillating primary. To test the completeness and robustness of the values reported in the TBO catalog, we performed a similar analysis on stars of the Ninth Catalog of Spectroscopic Binary Orbits (SB9).
Results.
The analysis of the SB9 reveals an overall completeness factor for the
Gaia
TBO catalog of up to ∼30% providing reliable orbital parameters for ≥90% of the systems below
P
orb, SB9
≲ 250 d. We obtained new 954 unique binary system candidates from
Gaia
DR3, which host solar-like oscillators, of which we found 45 stars in binary candidates to be on the main sequence and 909 in the red giant phase. Additionally, we report 918 oscillators in potentially long-periodic systems. We present the seismic properties of the full sample and test whether the reported orbital periods are physically possible. For 146 giants, the evolutionary state has been determined from their mixed-mode period spacing, showing a clear trend to long periodic and less eccentric systems in the advanced phases of stellar evolution. Two new eclipsing binary systems, hosting a red-giant primary were found. For another 146 systems hosting oscillating stars, the values for the orbital inclination were found in the TBO. Of 181 TBO candidate systems observed multiple times with APOGEE, 149 (82% |
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ISSN: | 0004-6361 1432-0746 |
DOI: | 10.1051/0004-6361/202346810 |