• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology

Article

Observational Evidence of Bimodal Distribution in Hot Jupiter Population
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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v16i40.2045

Year: 2023, Volume: 16, Issue: 40, Pages: 3471-3478

Original Article

Observational Evidence of Bimodal Distribution in Hot Jupiter Population

Soumyabrata Mondal1*

1Department of Physics, Bidhannagar College, Salt Lake, 700064, West Bengal, India

*Corresponding Author
Email: [email protected]

Received Date:11 August 2023, Accepted Date:13 September 2023, Published Date:27 October 2023

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: Hot Jupiters, a special class of exoplanets always draw attention due to their intriguing characteristics. Here we wish to establish the differentiation of two planetary mass groups having orbital eccentricity discrimination. Methods: A comprehensive statistical approach has been carried out to understand the distribution of hot Jupiter population and the architecture of those planetary. 312 hot Jupiters have been filtered out from 4285 different scientifically recognized exoplanet databases and such a huge hot Jupiter sample size has not been used to find out any intrinsic correlation before. Different techniques to discover hot Jupiters have been studied here to segregate them. Relation between orbital eccentricity and other planetary parameters like mass, orbital periods have been investigated further to find any intrinsic characteristics. Findings: We established that transit method has better chances to discover light and short period candidates. Their orbital eccentricity has been studied w.r.t. their calculated planetary mass and orbital period. We have found eccentricity excitation and tidal circularisation due to low orbital period keeps hot Jupiters at close proximity to their parent stars. Effectively smaller average eccentricity of for intermediate and large hot Jupiters indicates lack of influence of tidal interaction on larger masses. Probability distribution of eccentricity supports the existence of a discontinuity in planetary mass distribution at ~4MJ. Low p value (~0.037) in KS test indicates the existence of bimodal distribution of hot Jupiter populations having possibly different channel of formation. Novelty: Application of statistics on hot Jupiters is rare due to their infrequent detection. Already reported planetary parametric features of exoplanets are checked for trueness and new parameters have been studied. Here we also discussed theoretical and empirical implications of these statistical results for dynamical evolution. It opens up a new dimension to scientific realm.

Keywords: Hot Jupiter, Exoplanet, Mass distribution, Eccentricity, Transit method, Bimodal distribution

References

  1. Wolszczan A, Frail DA. A planetary system around the millisecond pulsar PSR1257 + 12. Nature. 1992;355:145–147. Available from: https://doi.org/10.1038/355145a0
  2. Mayor M, Queloz D. A Jupiter-mass companion to a solar-type star. Nature. 1995;378(6555):355–359. Available from: https://doi.org/10.1038/378355a0
  3. Hara NC, Ford EB. Statistical Methods for Exoplanet Detection with Radial Velocities. Annual Review of Statistics and Its Application. 2023;10:623–649. Available from: https://doi.org/10.1146/annurev-statistics-033021-012225
  4. Fortney JJ, Dawson RI, Komacek TD. Hot Jupiters: Origins, Structure, Atmospheres. Journal of Geophysical Research: Planets. 2021;126(3):1–28. Available from: https://doi.org/10.1029/2020JE006629
  5. Zhu W, Dong S. Exoplanet Statistics and Theoretical Implications. Annual Review of Astronomy and Astrophysics. 2021;59:291–336. Available from: https://doi.org/10.1146/annurev-astro-112420-020055
  6. Wright JT, Gaudi BS. Exoplanet Detection Methods. 2009. Available from: https://arxiv.org/abs/1210.2471
  7. Ivanova AE, Yakovlev OY, Ananyeva VI, Shashkova IA, Tavrov AV, Bertaux JLL. The ‘‘Detectability Window’’ Method to Take into Account Observational Selection in the Statistics of Exoplanets Discovered through Radial Velocity Measurements. Astronomy Letters. 2021;47(1):43–49. Available from: https://doi.org/10.1134/S1063773721010059
  8. Nelson BE, Ford EB, Rasio FA. Evidence for Two Hot-Jupiter Formation Paths. The Astronomical Journal. 2017;154(3):1–11. Available from: https://iopscience.iop.org/article/10.3847/1538-3881/aa82b3
  9. Dawson RI, Johnson JA. Origins of Hot Jupiters. Annual Review of Astronomy and Astrophysics. 2018;56(1):175–221. Available from: https://doi.org/10.1146/annurev-astro-081817-051853
  10. Bailey E, Batygin K. The Hot Jupiter Period–Mass Distribution as a Signature of in situ Formation. The Astrophysical Journal Letters. 2018;866(1):1–5. Available from: https://doi.org/10.3847/2041-8213/aade90
  11. Alei E, Claudi R, Bignamini A, Molinaro M. Exo-MerCat: A merged exoplanet catalog with Virtual Observatory connection. Astronomy and Computing. 2020;31:100370. Available from: https://doi.org/10.1016/j.ascom.2020.100370
  12. Feng F, Anglada-Escudé G, Tuomi M, Jones HRA, Chanamé J, Butler PR, et al. Detection of the nearest Jupiter analogue in radial velocity and astrometry data. Monthly Notices of the Royal Astronomical Society. 2019;490(4):5002–5016. Available from: https://doi.org/10.1093/mnras/stz2912
  13. Giertych N, Williams JP, Haravu P. A statistical primer on exoplanet detection methods. 2022. Available from: https://arxiv.org/abs/2205.10417
  15. Mayor M, Lovis C, Santos NC. Doppler spectroscopy as a path to the detection of Earth-like planets. Nature. 2014;513(7518):328–335. Available from: https://doi.org/10.1038/nature13780
  16. Dai Z, Ni D, Pan L, Zhu Y. Five Methods of Exoplanet Detection. In: 2021 5th International Conference on Mechanics, Mathematics and Applied Physics (ICMMAP 2021), Journal of Physics: Conference Series. Guilin, China, 23-25 July 2021. IOP Publishing. 2012:1–10.
  17. Budrikis Z. 30 years of exoplanet detections. Nature Reviews Physics. 2022;4(5):290. Available from: https://doi.org/10.1038/s42254-022-00459-x
  18. The Extrasolar Planets Encyclopaedia. Exoplanet.eu. Available from: http://exoplanet.eu/ (accessed )
  19. NASA Exoplanet Archive. NASA EXOPLANET SCIENCE INSTITUTE. Available from: https://exoplanetarchive.ipac.caltech.edu/
  20. Kane SR, Mahadevan S, Braun KV, Laughlin G, Ciardi DR. Publications of the Astronomical Society of the Pacific Astronomical Society of the Pacific, find out more Refining Exoplanet Ephemerides and Transit Observing Strategies. Publications of the Astronomical Society of the Pacific. 2009;121(889):1386–1394. Available from: https://doi.org/10.1086/648564
  21. Udry ST, Mayor M, Santos NC. Statistical properties of exoplanets-I. The period distribution: Constraints for the migration scenario. Astronomy & Astrophysics. 2003;407(1):369–376. Available from: https://doi.org/10.1051/0004-6361:20030843
  22. Raymond SN, Izidoro A, Bolmont E, Dorn C, Selsis F, Turbet M, et al. An upper limit on late accretion and water delivery in the TRAPPIST-1 exoplanet system. Nature Astronomy. 2022;6(1):80–88. Available from: https://doi.org/10.1038/s41550-021-01518-6
  23. Bonsor A, Harrison J, Shorttle O, Carter P, Kama M, Hollands M, et al. Volatile loss, Differentiation and Collisions: Key to the Composition of Rocky Exoplanets. European Planetary Science Congress. 2020;14(EPSC2020-387). Available from: https://doi.org/10.5194/epsc2020-387
  24. Wu DHH, Rice M, Wang S. Evidence for Hidden Nearby Companions to Hot Jupiters. The Astronomical Journal. 2023;165(4):1–16. Available from: https://doi.org/10.3847/1538-3881/acbf3f
  25. Mondal S. Classification of Hot Jupiter Population through Statistical Framework. Journal of Scientific Research. 2022;14(2):513–519. Available from: https://doi.org/10.3329/jsr.v14i2.56497
  27. Osborn A, Bayliss D. Investigating the planet–metallicity correlation for hot Jupiters. Monthly Notices of the Royal Astronomical Society. 2020;491(3):4481–4487. Available from: https://doi.org/10.1093/mnras/stz3207
  28. Yee SW, Winn JN. The Period Distribution of Hot Jupiters Is Not Dependent on Host Star Metallicity. The Astrophysical Journal Letters. 2023;949(2):1–7. Available from: https://doi.org/10.3847/2041-8213/acd552
  32. Eylen VV, SA, Huang X, MacDonald MG, RID, Cai MX, et al. The orbital eccentricity of small planet systems. The Astronomical Journal. 2019;157(2):1–16. Available from: https://doi.org/10.3847/1538-3881/aaf22f
  33. Kataria T, Showman AP, Lewis NK, Fortney JJ, Marley MS, Freedman RS. Three-dimensional Atmospheric Circulation of Hot Jupiters on Highly Eccentric Orbits. The Astrophysical Journal. 2013;767(1):1–19. Available from: https://iopscience.iop.org/article/10.1088/0004-637X/767/1/76
  34. Ford EB. Architectures of planetary systems and implications for their formation. Proceedings of the National Academy of Sciences. 2014;111(35):12616–12621. Available from: https://doi.org/10.1073/pnas.130421911
  35. Santos NC, Adibekyan V, Figueira P, Andreasen DT, Barros SCC, Delgado-Mena E, et al. Observational evidence for two distinct giant planet populations. Astronomy & Astrophysics. 2017;603:1–6. Available from: https://doi.org/10.1051/0004-6361/201730761

Copyright

© 2023 Mondal. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)

  • 27 October 2023

Year: 2023, Volume: 16, Issue: 40

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