K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn 
around a bright G star

Johnson, M. C.; Dai, F.; Justesen, A. B.; Gandolfi, D.; Hatzes, A. P.; Nowak, G.; Endl, M.; Cochran, W. D.; Hidalgo, D.; Watanabe, N.; Parviainen, H.; Hirano, T.; Villanueva, S.; Prieto-Arranz, J.; Narita, N.; Palle, E.; Guenther, E. W.; Barragán, O.; Trifonov, T.; Niraula, P.; MacQueen, P. J.; Cabrera, J.; Csizmadia, Sz; Eigmüller, Ph; Grziwa, S.; Korth, J.; Pätzold, M.; Smith, A. M. S.; Albrecht, S.; Alonso, R.; Deeg, H.; Erikson, A.; Esposito, M.; Fridlund, M.; Fukui, A.; Kusakabe, N.; Kuzuhara, M.; Livingston, J.; Montañes Rodriguez, P.; Nespral, D.; Persson, C. M.; Purismo, T.; Raimundo, S.; Rauer, H.; Ribas, I.; Tamura, M.; Van Eylen, V.; Winn, J. N.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn around a bright G star

MPS-Authors

Johnson, M. C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Dai, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Justesen, A. B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gandolfi, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hatzes, A. P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nowak, G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Endl, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cochran, W. D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hidalgo, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Watanabe, N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Parviainen, H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hirano, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Villanueva, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Prieto-Arranz, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Narita, N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Palle, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Guenther, E. W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Barragán, O.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Trifonov, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Niraula, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

MacQueen, P. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cabrera, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Csizmadia, Sz
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Eigmüller, Ph
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Grziwa, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Korth, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pätzold, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Smith, A. M. S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Albrecht, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Alonso, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Deeg, H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Erikson, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Esposito, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fridlund, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fukui, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kusakabe, N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kuzuhara, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Livingston, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Montañes Rodriguez, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nespral, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Persson, C. M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Purismo, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Raimundo, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rauer, H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ribas, I.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tamura, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Van Eylen, V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Winn, J. N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018MNRAS.481..596J
(Any fulltext)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Johnson, M. C., Dai, F., Justesen, A. B., Gandolfi, D., Hatzes, A. P., Nowak, G., et al. (2018). K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn around a bright G star. Monthly Notices of the Royal Astronomical Society, 481, 596-612.

Cite as: https://hdl.handle.net/21.11116/0000-0005-CD02-2

Abstract

We present the discovery and confirmation of two new transiting giant planets from the Kepler extended mission K2. K2-260 b is a hot Jupiter transiting a V = 12.7 F6V star in K2 Field 13, with a mass and radius of M_⋆ = 1.39_{-0.06}^{+0.05} M_{☉} and R_⋆ = 1.69 ± 0.03 R_{☉}. The planet has an orbital period of P = 2.627 d, and a mass and radius of M_P=1.42^{+0.31}_{-0.32} M_J and R_P=1.552^{+0.048}_{-0.057} R_J. This is the first K2 hot Jupiter with a detected secondary eclipse in the Kepler bandpass, with a depth of 71 ± 15 ppm, which we use to estimate a geometric albedo of A_g ̃ 0.2. We also detected a candidate stellar companion at 0.6 arcsec from K2-260; we find that it is very likely physically associated with the system, in which case it would be an M5-6V star at a projected separation of ̃400 au. K2-261 b is a warm Saturn transiting a bright (V = 10.5) G7IV/V star in K2 Field 14. The host star is a metal rich ([Fe/H] = 0.36 ± 0.06), mildly evolved 1.10_{-0.02}^{+0.01} M_{☉} star with R_⋆ = 1.65 ± 0.04 R_{☉}. Thanks to its location near the main-sequence turn-off, we can measure a relatively precise age of 8.8_{-0.3}^{+0.4} Gyr. The planet has P = 11.633 d, M_P = 0.223 ± 0.031 M_J, and R_P=0.850^{+0.026}_{-0.022} R_J, and its orbit is eccentric (e=0.39 ± 0.15). Its brightness and relatively large transit depth make this one of the best-known warm Saturns for follow-up observations to further characterize the planetary system.