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TOI-3568 b: a super-Neptune in the sub-Jovian desert

Fuente: arXiv

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Autori principali:	Martioli, E., Petrucci, R. P., Jofre, E., Hebrard, G., Ghezzi, L., Chew, Y. Gomez Maqueo, Diaz, R. F., Perottoni, H. D., Garcia, L. H., Rapetti, D., Etangs, A. Lecavelier des, de Almeida, L., Arnold, L., Artigau, E., Basant, R., Bean, J. L., Bieryla, A., Boisse, I., Bonfils, X., Brady, M., Cadieux, C., Carmona, A., Cook, N. J., Delfosse, X., Donati, J. -F., Doyon, R., Furlan, E., Howell, S. B., Jenkins, J. M., Kasper, D., Kiefer, F., Latham, D. W., Levine, A. M., Lorenzo-Oliveira, D., Luque, R., McLeod, K., Melendez, J., Moutou, C., Netto, Y., Pritchard, T. A., Rowden, P., Seifahrt, A., Stefansson, G., Sturmer, J., Twicken, D. J
Natura:	Preprint
Pubblicazione:	2024
Soggetti:	Earth and Planetary Astrophysics Solar and Stellar Astrophysics
Accesso online:	Acceder al recurso
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_version_	1866916448485507072
author	Martioli, E. Petrucci, R. P. Jofre, E. Hebrard, G. Ghezzi, L. Chew, Y. Gomez Maqueo Diaz, R. F. Perottoni, H. D. Garcia, L. H. Rapetti, D. Etangs, A. Lecavelier des de Almeida, L. Arnold, L. Artigau, E. Basant, R. Bean, J. L. Bieryla, A. Boisse, I. Bonfils, X. Brady, M. Cadieux, C. Carmona, A. Cook, N. J. Delfosse, X. Donati, J. -F. Doyon, R. Furlan, E. Howell, S. B. Jenkins, J. M. Kasper, D. Kiefer, F. Latham, D. W. Levine, A. M. Lorenzo-Oliveira, D. Luque, R. McLeod, K. Melendez, J. Moutou, C. Netto, Y. Pritchard, T. A. Rowden, P. Seifahrt, A. Stefansson, G. Sturmer, J. Twicken, D. J
author_facet	Martioli, E. Petrucci, R. P. Jofre, E. Hebrard, G. Ghezzi, L. Chew, Y. Gomez Maqueo Diaz, R. F. Perottoni, H. D. Garcia, L. H. Rapetti, D. Etangs, A. Lecavelier des de Almeida, L. Arnold, L. Artigau, E. Basant, R. Bean, J. L. Bieryla, A. Boisse, I. Bonfils, X. Brady, M. Cadieux, C. Carmona, A. Cook, N. J. Delfosse, X. Donati, J. -F. Doyon, R. Furlan, E. Howell, S. B. Jenkins, J. M. Kasper, D. Kiefer, F. Latham, D. W. Levine, A. M. Lorenzo-Oliveira, D. Luque, R. McLeod, K. Melendez, J. Moutou, C. Netto, Y. Pritchard, T. A. Rowden, P. Seifahrt, A. Stefansson, G. Sturmer, J. Twicken, D. J
contents	The sub-Jovian desert is a region in the mass-period and radius-period parameter space, typically encompassing short-period ranges between super-Earths and hot Jupiters, that exhibits an intrinsic dearth of planets. This scarcity is likely shaped by photoevaporation caused by the stellar irradiation received by giant planets that have migrated inward. We report the detection and characterization of TOI-3568 b, a transiting super-Neptune with a mass of $26.4\pm1.0$ M$_\oplus$, a radius of $5.30\pm0.27$ R$_\oplus$, a bulk density of $0.98\pm0.15$ g cm$^{-3}$, and an orbital period of 4.417965(5) d situated in the vicinity of the sub-Jovian desert. This planet orbiting a K dwarf star with solar metallicity, was identified photometrically by TESS. It was characterized as a planet by our high-precision radial velocity monitoring program using MAROON-X at Gemini North, supplemented by additional observations from the SPICE large program with SPIRou at CFHT. We performed a Bayesian MCMC joint analysis of the TESS and ground-based photometry, MAROON-X and SPIRou radial velocities, to measure the orbit, radius, and mass of the planet, as well as a detailed analysis of the high-resolution flux and polarimetric spectra to determine the physical parameters and elemental abundances of the host star. Our results reveal TOI-3568 b as a hot super-Neptune, rich in hydrogen and helium with a core of heavier elements with a mass between 10 and 25 M$_\oplus$. We analyzed the photoevaporation status of TOI-3568 b and found that it experiences one of the highest EUV luminosities among planets with a mass M$_{\rm p}$ $<2$ M$_{\rm Nep}$, yet it has an evaporation lifetime exceeding 5 Gyr. Positioned in the transition between two significant populations of exoplanets on the mass-period and energy diagrams, this planet presents an opportunity to test theories concerning the origin of the sub-Jovian desert.
format	Preprint
id	arxiv_https___arxiv_org_abs_2409_03704
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	TOI-3568 b: a super-Neptune in the sub-Jovian desert Martioli, E. Petrucci, R. P. Jofre, E. Hebrard, G. Ghezzi, L. Chew, Y. Gomez Maqueo Diaz, R. F. Perottoni, H. D. Garcia, L. H. Rapetti, D. Etangs, A. Lecavelier des de Almeida, L. Arnold, L. Artigau, E. Basant, R. Bean, J. L. Bieryla, A. Boisse, I. Bonfils, X. Brady, M. Cadieux, C. Carmona, A. Cook, N. J. Delfosse, X. Donati, J. -F. Doyon, R. Furlan, E. Howell, S. B. Jenkins, J. M. Kasper, D. Kiefer, F. Latham, D. W. Levine, A. M. Lorenzo-Oliveira, D. Luque, R. McLeod, K. Melendez, J. Moutou, C. Netto, Y. Pritchard, T. A. Rowden, P. Seifahrt, A. Stefansson, G. Sturmer, J. Twicken, D. J Earth and Planetary Astrophysics Solar and Stellar Astrophysics The sub-Jovian desert is a region in the mass-period and radius-period parameter space, typically encompassing short-period ranges between super-Earths and hot Jupiters, that exhibits an intrinsic dearth of planets. This scarcity is likely shaped by photoevaporation caused by the stellar irradiation received by giant planets that have migrated inward. We report the detection and characterization of TOI-3568 b, a transiting super-Neptune with a mass of $26.4\pm1.0$ M$_\oplus$, a radius of $5.30\pm0.27$ R$_\oplus$, a bulk density of $0.98\pm0.15$ g cm$^{-3}$, and an orbital period of 4.417965(5) d situated in the vicinity of the sub-Jovian desert. This planet orbiting a K dwarf star with solar metallicity, was identified photometrically by TESS. It was characterized as a planet by our high-precision radial velocity monitoring program using MAROON-X at Gemini North, supplemented by additional observations from the SPICE large program with SPIRou at CFHT. We performed a Bayesian MCMC joint analysis of the TESS and ground-based photometry, MAROON-X and SPIRou radial velocities, to measure the orbit, radius, and mass of the planet, as well as a detailed analysis of the high-resolution flux and polarimetric spectra to determine the physical parameters and elemental abundances of the host star. Our results reveal TOI-3568 b as a hot super-Neptune, rich in hydrogen and helium with a core of heavier elements with a mass between 10 and 25 M$_\oplus$. We analyzed the photoevaporation status of TOI-3568 b and found that it experiences one of the highest EUV luminosities among planets with a mass M$_{\rm p}$ $<2$ M$_{\rm Nep}$, yet it has an evaporation lifetime exceeding 5 Gyr. Positioned in the transition between two significant populations of exoplanets on the mass-period and energy diagrams, this planet presents an opportunity to test theories concerning the origin of the sub-Jovian desert.
title	TOI-3568 b: a super-Neptune in the sub-Jovian desert
topic	Earth and Planetary Astrophysics Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2409.03704