Characterization of seven transiting systems including four warm Jupiters from SOPHIE and TESS
We present the study of seven systems, three of which TOI-2295, TOI-2537, and TOI-5110 are newly discovered planetary systems. Through the analysis of TESS photometry, SOPHIE radial velocities, and high-spatial resolution imaging, we found that TOI-2295b, TOI-2537b, and TOI-5110b are transiting warm...
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Zusammenfassung: | We present the study of seven systems, three of which TOI-2295, TOI-2537, and
TOI-5110 are newly discovered planetary systems. Through the analysis of TESS
photometry, SOPHIE radial velocities, and high-spatial resolution imaging, we
found that TOI-2295b, TOI-2537b, and TOI-5110b are transiting warm Jupiters
with orbital periods ranging from 30 to 94 d, masses between 0.9 and 2.9 MJ,
and radii ranging from 1.0 to 1.5 RJ. Both TOI-2295 and TOI-2537 each harbor at
least one additional, outer planet. Their outer planets TOI-2295c and TOI-2537c
are characterized by orbital periods of 966.5 +/- 4.3 and 1920^{+230}_{-140} d,
respectively, and minimum masses of 5.61^{+0.23}_{-0.24} and 7.2 +/- 0.5 MJ,
respectively. We also investigated and characterized the two recently reported
warm Jupiters TOI-1836b and TOI-5076b, which we independently detected in
SOPHIE RVs. Additionally, we study the planetary candidates TOI-4081.01 and
TOI-4168.01. For TOI-4081.01, despite our detection in radial velocities, we
cannot rule out perturbation by a blended eclipsing binary and thus exercise
caution regarding its planetary nature. On the other hand, we identify
TOI-4168.01 as a firm false positive. Finally, we highlight interesting
characteristics of these new planetary systems. The transits of TOI-2295b are
highly grazing, with an impact parameter of 1.056$^{+0.063}_{-0.043}$.
TOI-2537b, in turn, is a temperate Jupiter with an effective temperature of
307+/-15 K and can serve as a valuable low-irradiation control for models of
hot Jupiter inflation anomalies. We also detected significant transit timing
variations (TTVs) for TOI-2537b, which are likely caused by gravitational
interactions with the outer planet TOI-2537c. Finally, TOI-5110b stands out due
to its orbital eccentricity of 0.75+/- 0.03, one of the highest planetary
eccentricities discovered thus far. |
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DOI: | 10.48550/arxiv.2412.08527 |