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ZENODO
Review . 2024
License: CC BY
Data sources: ZENODO
ZENODO
Review . 2024
License: CC BY
Data sources: Datacite
ZENODO
Review . 2024
License: CC BY
Data sources: Datacite
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Characterization of seven transiting systems including four warm Jupiters from SOPHIE and TESS

Authors: heidari, neda;

Characterization of seven transiting systems including four warm Jupiters from SOPHIE and TESS

Abstract

While several thousand exoplanets are now confirmed, the number of known transiting warm Jupiters ($10 ~\text{d} < \text{period} < 200 ~ \text{d}$) remains relatively small. These planets are generally believed to have formed outside the snowline and migrated to their current orbits. Because they are sufficiently distant from their host stars, they mitigate proximity effects and so offer valuable insights into planet formation and evolution. Here, 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 $M_{\rm{J}}$, and radii ranging from 1.0 to 1.5 $R_{\rm{J}}$. 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$^{+4.3}_{-4.2}$ and 1920$^{+230}_{-140}$ d, respectively, and minimum masses of 5.61$^{+0.23}_{-0.24}$ and 7.23$^{+0.52}_{-0.45}$ $M_{\rm{J}}$, respectively. We also investigated and characterized the two recently reported warm Jupiters TOI-1836b and TOI-5076b, which we independently detected in SOPHIE RVs. Our new data allow for further discussion of their nature and refinement of their parameters. 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; its radial velocity curve exhibits a large amplitude in an anti-phase relation with the transit ephemeris observed by TESS, indicating that the detected event is the eclipse of a secondary star rather than a planetary transit. 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$^{+0.063}_{-0.043}$. This leaves its radius uncertain but potentially makes it an interesting probe of gravitational dynamics in its two-planet system, as transit shapes for grazing planets are highly sensitive to even small variations in inclination. TOI-2537b, in turn, is a temperate Jupiter with an effective temperature of 307$\pm$15 K and can serve as a valuable low-irradiation control for models of hot Jupiter inflation anomalies. We also detected significant transit timing variations (TTVs) for TOI-2537b, which are likely caused by gravitational interactions with the outer planet TOI-2537c. Further transit observations are needed to refine the analysis of these TTVs and enhance our understanding of the system’s dynamics. Finally, TOI-5110b stands out due to its orbital eccentricity of 0.745$^{+0.030}_{-0.027}$, one of the highest planetary eccentricities discovered thus far. We find no conclusive evidence for an external companion, but an unseen planet with a semi-amplitude smaller than 10 m/s could nonetheless still be exciting its eccentricity. 

Here, we present the Appendixes of this article.

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Keywords

planets and satellites: detection – techniques: photometric, radial velocities – stars: TOI-1836, TOI-2295, TOI-2537, TOI-4081, TOI-4168, TOI-5076, and TOI-5110

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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