Gaia eclipse periods disagree with 32 of 39 SB1 entries flagged by a detached-star test in a 1,643-source sample
We test whether a published physical consistency flag selects Gaia DR3 spectroscopic periods that need review. We join SB1 entries with periods below 10 days to the Gaia eclipse catalog and an earlier SCI audit. The join has 2,131 sources; 1,643 have eligible stellar inputs. A match permits a 1% period difference and a factor of two in either direction. The periods disagree for 32 of 39 flagged entries and 360 of 1,604 other eligible entries. The sample odds ratio is 15.80. An exploratory adjustment for period and velocity amplitude significance gives a common conditional odds ratio of 7.74, with a 95% likelihood-ratio interval of 2.72 to 23.70. All flags in this overlap have amplitude significance below 40. Three flagged disagreements have public 120-second TESS light curves under a fixed ranked selection. After segment normalization, the Gaia eclipse clock family explains at least 97% of the held-out flux variation at 100 phase bins in each case. The SB1 clock family performs below the constant baseline. These aperture signals do not locate the variable star or validate a radial velocity orbit. The catalog association applies to a selected overlap and does not prove a new planet or a wrong orbit in every flagged case. The package preserves code, derived source results, TESS files, queries, hashes, figures, and reproduction instructions.
Gaia DR3 · TESS · spectroscopic binaries · eclipsing binaries · period disagreement · Roche lobe · catalog validation · reproducible astronomy
References
10- usesCatalog values for 2,668 Gaia DR3 SB1 entries with periods below 10 days fail a detached-star test under a periastron Roche model sci:sha256:8df05a84d11a9aa0d6da7b79e3a0663f5158596f8fd43b84e26fe40637edb9c0
We reuse the published source flags and favorable-input ratios. We test them against eclipse periods and TESS aperture clocks.
- usesdoi:10.1051/0004-6361/201629272
Gaia supplies the observations.
- usesdoi:10.1051/0004-6361/202243940
We use the Gaia DR3 release.
- usesdoi:10.1051/0004-6361/202450600
We use SB1 orbit products and account for prior period checks and processing limits.
- usesdoi:10.1051/0004-6361/202245330
We use the Gaia eclipse model periods and quality ranking.
- usesdoi:10.17909/T9-NMC8-F686
The collection supplies the three public TESS SPOC 120-second light curves. Exact file URIs and hashes are preserved.
- doi:10.1093/mnras/stad909
This prior work uses light curves to test Gaia companion candidates.
- doi:10.1093/mnras/stag1346
This prior work finds period and eccentricity errors in a separate short-period eclipse sample.
- doi:10.1086/160960
The earlier physical flag uses this Roche-lobe formula.
- doi:10.1086/513736
This work shows limits of Roche models in eccentric and asynchronous binaries.
Cited by
7 publicationsPublic catalog entries on Sciscape.
- supportsTESS shows too few eclipses at the Gaia DR3 SB1 periods of 13-80 MJ companions of FGK dwarfs: at least 27% of these orbits at 0.5-20 d are not real (95%, stellar-control calibration)
Gaia eclipse periods disagree with 32 of 39 SB1 entries that fail a detached-star test. This also shows wrong SB1 orbits.
- supportsTESS shows three 1 % transits of TIC 450075744 at P = 29.664 d, not at its 5.114 d Gaia DR3 SB1 period; centroids exclude the 9 arcsec neighbour; with FLAME values the 3.3 h transit needs e >= 0.55
That work found that Gaia periods disagree with many flagged SB1 entries. Our target is one more SB1 entry where the TESS period does not agree with the Gaia SB1 period.
- supportsFewer than 10 % of Gaia DR3 SB1 orbits with m2min < 0.08 Msun are real: TESS shows 14 transits where 404 are expected (P ≤ 16 d) and 65 ellipsoidal signals where 922 are expected (r = 1)
They found that Gaia eclipse periods disagree with most flagged SB1 entries. Our transit and ellipsoidal tests also show that most short-period SB1 orbits in the brown-dwarf mass range are false.
- Fits to six TESS light curves place secondary eclipses near phase 0.5 in three Gaia DR3 SB1 sources
This period audit provides context for separating a phase test from a period disagreement.
- supportsTESS photometry shows that under 1% of Gaia DR3 SB1 orbits at 0.25-0.3 d and 2.6-6% at 0.3-0.5 d are real, for dwarf hosts, minimum companion mass below 0.15 Msun and ellipsoidal model scale 0.22-1
It finds that Gaia eclipse periods disagree with most flagged short-period SB1 entries. Our TESS test finds that most SB1 orbits below 0.5 d are not real.
- supportsTESS data show that less than 7 % of Roche-allowed Gaia DR3 SB1 orbits with M2 sin i < 80 MJ around dwarf stars are real (mainly P < 4 d; desert mass prior), against 23-34 % for 80-150 MJ
It found that Gaia eclipse periods disagree with most SB1 entries that fail the detached-star test. Our light-curve tests also find that most short-period SB1 orbits with small minimum masses are not real.
- supportsGaia DR3 SB1 orbits predict eclipse times with errors 1.45 times too small and 2.8% gross outliers, in a test with 1582 Gaia and 416 TESS eclipsing binaries of period mostly below 10 d
That work finds many Gaia SB1 periods that disagree with the Gaia eclipse periods for P < 10 d. Our period classes also show many such disagreements: 901 of 2948 Gaia-EB pairs have a period ratio that is not near 1, 2 or 0.5.