Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion

Autor: E Knudstrup, D Gandolfi, G Nowak, C M Persson, E Furlan, J Livingston, E Matthews, M S Lundkvist, M L Winther, J L Rørsted, S H Albrecht, E Goffo, I Carleo, H J Deeg, K A Collins, N Narita, H Isaacson, S Redfield, F Dai, T Hirano, J M Akana Murphy, C Beard, L A Buchhave, S Cary, A Chontos, I Crossfield, W D Cochran, D Conti, P A Dalba, M Esposito, S Fajardo-Acosta, S Giacalone, S K Grunblatt, P Guerra, A P Hatzes, R Holcomb, F G Horta, A W Howard, D Huber, J M Jenkins, P Kabáth, S Kane, J Korth, K W F Lam, K V Lester, R Matson, K K McLeod, J Orell-Miquel, F Murgas, E Palle, A S Polanski, G Ricker, P Robertson, R Rubenzahl, J E Schlieder, S Seager, A M S Smith, P Tenenbaum, E Turtelboom, R Vanderspek, L Weiss, J Winn
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Knudstrup, E, Gandolfi, D, Nowak, G, Persson, C M, Furlan, E, Livingston, J, Matthews, E, Lundkvist, M S, Winther, M L, Rørsted, J L, Albrecht, S H, Goffo, E, Carleo, I, Deeg, H J, Collins, K A, Narita, N, Isaacson, H, Redfield, S, Dai, F, Hirano, T, Akana Murphy, J M, Beard, C, Buchhave, L A, Cary, S, Chontos, A, Crossfield, I, Cochran, W D, Conti, D, Dalba, P A, Esposito, M, Fajardo-Acosta, S, Giacalone, S, Grunblatt, S K, Guerra, P, Hatzes, A P, Holcomb, R, Horta, F G, Howard, A W, Huber, D, Jenkins, J M, Kabáth, P, Kane, S, Korth, J, Lam, K W F, Lester, K V, Matson, R, McLeod, K K, Orell-Miquel, J, Murgas, F, Palle, E, Polanski, A S, Ricker, G, Robertson, P, Rubenzahl, R, Schlieder, J E, Seager, S, Smith, A M S, Tenenbaum, P, Turtelboom, E, Vanderspek, R, Weiss, L & Winn, J 2023, ' Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion ', Monthly Notices of the Royal Astronomical Society, vol. 519, no. 4, pp. 5637-5655 . https://doi.org/10.1093/mnras/stac3684
Knudstrup, E, Gandolfi, D, Nowak, G, Persson, C M, Furlan, E, Livingston, J, Matthews, E, Lundkvist, M S, Winther, M L, Rørsted, J L, Albrecht, S H, Goffo, E, Carleo, I, Deeg, H J, Collins, K A, Narita, N, Isaacson, H, Redfield, S, Dai, F, Hirano, T, Akana Murphy, J M, Beard, C, Cary, S, Chontos, A, Crossfield, I, Cochran, W D, Conti, D, Dalba, P A, Esposito, M, Fajardo-Acosta, S, Giacalone, S, Grunblatt, S K, Guerra, P, Hatzes, A P, Holcomb, R, Horta, F G, Huber, D, Jenkins, J M, Kabáth, P, Kane, S, Korth, J, Lam, K W F, Lester, K V, Matson, R, McLeod, K K, Orell-Miquel, J, Murgas, F, Palle, E, Polanski, A S, Ricker, G, Robertson, P, Rubenzahl, R, Schlieder, J E, Seager, S, Tenenbaum, P, Turtelboom, E, Vanderspek, R, Weiss, L & Winn, J 2023, ' Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn-mass companion ', Monthly Notices of the Royal Astronomical Society, vol. 519, no. 4 . https://doi.org/10.1093/mnras/stac3684
DOI: 10.1093/mnras/stac3684
Popis: We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288~b has a period of $2.699835^{+0.000004}_{-0.000003}$ d, a radius of $5.24 \pm 0.09$ R$_\oplus$, and a mass of $42 \pm 3$ M$_\oplus$, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-year-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn-mass planet on a moderately eccentric orbit ($0.13^{+0.07}_{-0.09}$) with a minimum mass of $84 \pm 7$ M$_\oplus$ and a period of $443^{+11}_{-13}$ d. The 5 sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors.
16 pages, 17 figures, under review MNRAS
Databáze: OpenAIRE
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