J/A+A/702/A85 TOI-2267 light curves (Zuniga-Fernandez+, 2025)
Two warm Earth-sized exoplanets and an Earth-sized candidate in the M5V-M6V
binary system TOI-2267.
Zuniga-Fernandez S., Pozuelos F.J., Devora-Pajares M., Cuello N.,
Greklek-McKeon M., Stassun K.G., Van Grootel V., Rojas-Ayala B., Korth J.,
Guenther M.N., Burgasser A.J., Hsu C., Rackham B.V., Barkaoui K.,
Timmermans M., Cadieux C., Alonso R., Strakhov I.A., Howell S.B.,
Littlefield C., Furlan E., Amado P.J., Jenkins J.M., Twicken J.D.,
Sucerquia M., Davis Y.T., Schanche N., Collins K.A., Burdanov A.,
Davoudi F., Demory B.-O., Delrez L., Dransfield G., Ducrot E.,
Garcia L.J., Gillon M., Gomez Maqueo Chew Y., Jano Munoz C., Jehin E.,
Murray C.A., Niraula P., Pedersen P.P., Queloz D., Rebolo-Lopez R.,
Scott M.G., Sebastian D., Hooton M.J., Thompson S.J., Triaud A.H.M.J.,
de Wit J., Ghachoui M., Benkhaldoun Z., Doyon R., Lafreniere D.,
Casanova V., Sota A., Plauchu-Frayn I., Khandelwal A., Zong Lang F.,
Schroffenegger U., Wampfler S., Lendl M., Schwarz R.P., Murgas F.,
Palle E., Parviainen H.
<Astron. Astrophys. 702, A85 (2025)>
=2025A&A...702A..85Z 2025A&A...702A..85Z (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Photometry ; Optical
Keywords: techniques: photometric - planets and satellites: detection -
planets and satellites: terrestrial planets - binaries: close -
stars: individual: TOI-2267
Abstract:
We report the discovery of two warm exoplanets orbiting the cool
binary system TOI-2267, composed of the M5 (TOI-2267A) and M6
(TOI-2267B) stars, whose angular separation is 0.384 arcsec,
corresponding to a projected distance of only about 8 au at 22 pc from
the Solar System. To confirm the planetary nature of these objects, we
combined photometry from the Transiting Exoplanet Survey Satellite
(TESS) and ground-based facilities together with high-resolution
images, archival data, and statistical validation in our analyses.
From the current data set, we cannot unambiguously determine which
star of the binary the planets orbit. These planets are Earth-sized
with radii of 1.00±0.11 and 1.14±0.13R⊕ for TOI-2267 b
(P=2.28d) and TOI-2267 c (P=3.49d), respectively, when orbiting
TOI-2267A, whereas the radii are of 1.22±0.29 and 1.36±0.33
R⊕ when orbiting TOI-2267B. In addition to the signals
attributed to TOI-2267 b and c, the TESS data reveal a third strong
signal with a periodicity of 2.03d (TOI-2267.02). Although
statistical analyses support its planetary nature, ground-based
follow-up observations did not detect this signal. Its status
therefore remains that of a planetary candidate, with an Earth-size of
0.95±0.12 R⊕ or 1.13±0.30 R⊕ when orbiting
TOI-2267A or B, respectively. If this candidate is confirmed,
dynamical analyses indicate that all three planets cannot orbit the
same star. The most plausible configurations are b-c or .02-c
orbiting the same star, while the .02-b case is unlikely due to
strong instabilities. The proximity of b and c to a first-order 3:2
mean motion resonance suggests they likely orbit the same star, with
.02 orbiting the other component. This scenario would make TOI-2267
the most compact binary system known to host planets, with both
components harbouring transiting worlds, and offer a unique benchmark
for studying planet formation and evolution in compact binary
environments.
Description:
We report the discovery of two warm exoplanets orbiting the cool
binary system TOI-2267, composed of the M5 (TOI-2267A) and M6
(TOI-2267B) stars, whose angular separation is 0.384 arcsec,
corresponding to a projected distance of only about 8 au at 22pc from
the Solar System.
Files with JD, flux and flux error for the photometry used in the
discovery and validation paper for the TOI-2267 three earth-sized
planets system.
If you use this photometry please cite de source paper:
https://doi.org/10.1051/0004-6361/202554419
Objects:
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RA (2000) DE Designation(s)
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04 20 12.64 +84 54 06.2 TOI-2267 = Gaia DR3 571488283984760960
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stexz1.dat 56 981 2020/11/25 SaintEx z light curve
stexz2.dat 56 512 2020/12/04 SaintEx z light curve
artz1.dat 56 1140 2021/03/17 Artemis z light curve
artz2.dat 56 1799 2021/11/06 Artemis z light curve
artz3.dat 56 1366 2021/11/13 Artemis z light curve
artz4.dat 56 2014 2021/12/04 Artemis z light curve
artz5.dat 56 1223 2022/03/12 Artemis z light curve
artz6.dat 56 1032 2022/11/08 Artemis z light curve
ommip.dat 46 375 2022/11/09 OMM ip light curve
osoi1.dat 56 261 2023/10/07 OSN I light curve
osoi2.dat 56 175 2023/11/20 OSN I light curve
tess.dat 48 180755 TESS light curve
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Byte-by-byte Description of file: *.dat
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Bytes Format Units Label Explanations
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1- 18 F18.13 d Time Time (JD-2457000)
20- 38 F19.17 --- Flux Normalized flux
39- 56 F18.16 --- e_Flux Normalized flux error
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Acknowledgements:
Sebastian Zuniga-Fernandez, sgzuniga(at)uliege.be
(End) Patricia Vannier [CDS] 29-Oct-2025