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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

K2-139 b: a low-mass warm Jupiter on a 29-d orbit transiting an active K0 V star

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Autor(es):
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Barragan, O. [1] ; Gandolfi, D. [1] ; Smith, A. M. S. [2] ; Deeg, H. J. [3, 4] ; Fridlund, M. C. V. [5, 6] ; Persson, C. M. [5] ; Donati, P. [7] ; Endl, M. [8, 9] ; Csizmadia, Sz. [2] ; Grziwa, S. [10] ; Nespral, D. [3, 4] ; Hatzes, A. P. [11] ; Cochran, W. D. [8, 9] ; Fossati, L. [12] ; Brems, S. S. [13] ; Cabrera, J. [2] ; Cusano, F. [7] ; Eigmuller, Ph. [1] ; Eiroa, C. [14] ; Erikson, A. [2] ; Guenther, E. [11] ; Korth, J. [10] ; Lorenzo-Oliveira, D. [15] ; Mancini, L. [16, 17, 18] ; Paetzold, M. [10] ; Prieto-Arranz, J. [3, 4] ; Rauer, H. [2, 19] ; Rebollido, I. [14] ; Saario, J. [20] ; Zakhozhay, O. V. [16, 21]
Número total de Autores: 30
Afiliação do(s) autor(es):
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[1] Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin - Italy
[2] German Aerosp Ctr, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin - Germany
[3] Univ La Laguna, Dept Astrofis, E-38206 Tenerife - Spain
[4] Inst Astrofis Canarias, E-38205 Tenerife - Spain
[5] Chalmers Univ Technol, Onsala Space Observ, Dept Earth & Space Sci, SE-43992 Onsala - Sweden
[6] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden - Netherlands
[7] INAF Osservatorio Astron Bologna, Via Ranzani 1, I-20127 Bologna - Italy
[8] Univ Texas Austin, Dept Astron, 2515 Speedway, Stop C1400, Austin, TX 78712 - USA
[9] Univ Texas Austin, McDonald Observ, 2515 Speedway, Stop C1400, Austin, TX 78712 - USA
[10] Univ Cologne, Rhein Inst Umweltforsch, Aachener Str 209, D-50931 Cologne - Germany
[11] Thuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg - Germany
[12] Austrian Acad Sci, Space Res Inst, A-8041 Graz - Austria
[13] Heidelberg Univ, Zentrum Astron, Landessternwarte, Konigstuhl 12, D-69117 Heidelberg - Germany
[14] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid - Spain
[15] Univ Sao Paulo, Dept Astron IAG USP, Rua Matao 1226, Cidade Univ, BR-05508900 Sao Paulo, SP - Brazil
[16] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg - Germany
[17] Univ Roma Tor Vergata, Dept Phys, I-00173 Rome - Italy
[18] INAF Astrophys Observ Turin, I-10025 Turin - Italy
[19] TU Berlin, Ctr Astron & Astrophys, Hardenbergstr 36, D-10623 Berlin - Germany
[20] Nord Opt Telescope, Apartado 474, E-38700 Santa Cruz De La Palma - Spain
[21] Natl Acad Sci Ukraine, Main Astron Observ, 27 Akad Zabolotnoho St, UA-03143 Kiev - Ukraine
Número total de Afiliações: 21
Tipo de documento: Artigo Científico
Fonte: Monthly Notices of the Royal Astronomical Society; v. 475, n. 2, p. 1765-1776, APR 2018.
Citações Web of Science: 5
Resumo

We announce the discovery of K2-139 b (EPIC 218916923 b), a transiting warm- Jupiter (T-eq = 547 +/- 25 K) on a 29-d orbit around an active (log R'(HK)= -4.46 +/- 0.06) K0V star in K2 Campaign 7. We derive the system's parameters by combining the K2 photometry with ground-based follow-up observations. With a mass of 0.387(-0.075)(+0.083) M-J and radius of 0.808(-0.033)(+0.034) R-J, K2-139 b is one of the transiting warm Jupiters with the lowest mass known to date. The planetary mean density of 0.91(-0.20)(+0.24) g cm(-3) can be explained with a core of similar to 50M circle dot. Given the brightness of the host star (V = 11.653 mag), the relatively short transit duration (similar to 5 h), and the expected amplitude of the Rossiter-McLaughlin effect (similar to 25m s(-1)), K2-139 is an ideal target to measure the spin-orbit angle of a planetary system hosting a warm Jupiter. (AU)

Processo FAPESP: 16/20667-8 - Cronômetros estelares: a conexão entre idade, atividade cromosférica, rotação e abundâncias de lítio em estrelas de tipo solar
Beneficiário:Diego Lorenzo de Oliveira
Linha de fomento: Bolsas no Brasil - Pós-Doutorado