K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant

A. M.S. Smith; S. N. Breton; S. Csizmadia; F. Dai; D. Gandolfi; R. A. García; A. W. Howard; H. Isaacson; J. Korth; K. W.F. Lam; S. Mathur; G. Nowak; F. Pérez Hernández; C. M. Persson; S. H. Albrecht; O. Barragán; J. Cabrera; W. D. Cochran; H. J. Deeg; M. Fridlund; I. Y. Georgie v a; E. Gof fo; E. W. Guenther; A. P. Hatzes; P. Kabath; J. H. Livingston; R. Luque; E. Palle; S. Redfield; F. Rodler; L. M. Serrano; V. Van Eylen

doi:10.1093/mnras/stab3497

K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant

A. M.S. Smith^*, S. N. Breton, S. Csizmadia, F. Dai, D. Gandolfi, R. A. García, A. W. Howard, H. Isaacson, J. Korth, K. W.F. Lam, S. Mathur, G. Nowak, F. Pérez Hernández, C. M. Persson, S. H. Albrecht, O. Barragán, J. Cabrera, W. D. Cochran, H. J. Deeg, M. FridlundI. Y. Georgie v a, E. Gof fo, E. W. Guenther, A. P. Hatzes, P. Kabath, J. H. Livingston, R. Luque, E. Palle, S. Redfield, F. Rodler, L. M. Serrano, V. Van Eylen

^*Corresponding author af dette arbejde

Institut for Fysik og Astronomi - Stellar Astrophysics Centre

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

Abstract

We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from K2's Campaign 17 allows us to refine the stellar properties. We find K2-99 to be significantly smaller than previously thought, with R = 2.55 ± 0.02 R. The new light curve also contains four transits of K2-99 b, which we use to improve our knowledge of the planetary properties. We find the planet to be a non-inflated warm Jupiter, with Rb = 1.06 ± 0.01 RJup. 60 new radial velocity measurements from HARPS, HARPS-N, and HIRES enable the determination of the orbital parameters of K2-99 c, which were previously poorly constrained. We find that this outer planet has a minimum mass Mcsin ic = 8.4 ± 0.2 MJup, and an eccentric orbit (ec = 0.210 ± 0.009) with a period of 522.2 ± 1.4 d. Upcoming TESS observations in 2022 have a good chance of detecting the transit of this planet, if the mutual inclination between the two planetary orbits is small.

Originalsprog	Engelsk
Tidsskrift	Monthly Notices of the Royal Astronomical Society
Vol/bind	510
Nummer	4
Sider (fra-til)	5035-5049
Antal sider	15
ISSN	0035-8711
DOI	https://doi.org/10.1093/mnras/stab3497
Status	Udgivet - mar. 2022

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10.1093/mnras/stab3497

https://arxiv.org/pdf/2111.14660.pdf

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Smith, A. M. S., Breton, S. N., Csizmadia, S., Dai, F., Gandolfi, D., García, R. A., Howard, A. W., Isaacson, H., Korth, J., Lam, K. W. F., Mathur, S., Nowak, G., Hernández, F. P., Persson, C. M., Albrecht, S. H., Barragán, O., Cabrera, J., Cochran, W. D., Deeg, H. J., ... Van Eylen, V. (2022). K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant. Monthly Notices of the Royal Astronomical Society, 510(4), 5035-5049. https://doi.org/10.1093/mnras/stab3497

@article{3ea5f7eb611044cbbfc9cef9bc25d1fa,

title = "K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant",

abstract = "We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from K2's Campaign 17 allows us to refine the stellar properties. We find K2-99 to be significantly smaller than previously thought, with R = 2.55 ± 0.02 R. The new light curve also contains four transits of K2-99 b, which we use to improve our knowledge of the planetary properties. We find the planet to be a non-inflated warm Jupiter, with Rb = 1.06 ± 0.01 RJup. 60 new radial velocity measurements from HARPS, HARPS-N, and HIRES enable the determination of the orbital parameters of K2-99 c, which were previously poorly constrained. We find that this outer planet has a minimum mass Mcsin ic = 8.4 ± 0.2 MJup, and an eccentric orbit (ec = 0.210 ± 0.009) with a period of 522.2 ± 1.4 d. Upcoming TESS observations in 2022 have a good chance of detecting the transit of this planet, if the mutual inclination between the two planetary orbits is small. ",

keywords = "Planetary systems, Planets and satellites: Detection, Planets and satellites: Individual: K2-99 b, Planets and satellites: Individual: K2-99 c",

author = "Smith, {A. M.S.} and Breton, {S. N.} and S. Csizmadia and F. Dai and D. Gandolfi and Garc{\'i}a, {R. A.} and Howard, {A. W.} and H. Isaacson and J. Korth and Lam, {K. W.F.} and S. Mathur and G. Nowak and Hern{\'a}ndez, {F. P{\'e}rez} and Persson, {C. M.} and Albrecht, {S. H.} and O. Barrag{\'a}n and J. Cabrera and Cochran, {W. D.} and Deeg, {H. J.} and M. Fridlund and {Georgie v a}, {I. Y.} and {Gof fo}, E. and Guenther, {E. W.} and Hatzes, {A. P.} and P. Kabath and Livingston, {J. H.} and R. Luque and E. Palle and S. Redfield and F. Rodler and Serrano, {L. M.} and {Van Eylen}, V.",

year = "2022",

month = mar,

doi = "10.1093/mnras/stab3497",

language = "English",

volume = "510",

pages = "5035--5049",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Smith, AMS, Breton, SN, Csizmadia, S, Dai, F, Gandolfi, D, García, RA, Howard, AW, Isaacson, H, Korth, J, Lam, KWF, Mathur, S, Nowak, G, Hernández, FP, Persson, CM, Albrecht, SH, Barragán, O, Cabrera, J, Cochran, WD, Deeg, HJ, Fridlund, M, Georgie v a, IY, Gof fo, E, Guenther, EW, Hatzes, AP, Kabath, P, Livingston, JH, Luque, R, Palle, E, Redfield, S, Rodler, F, Serrano, LM & Van Eylen, V 2022, 'K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant', Monthly Notices of the Royal Astronomical Society, bind 510, nr. 4, s. 5035-5049. https://doi.org/10.1093/mnras/stab3497

K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant. / Smith, A. M.S.; Breton, S. N.; Csizmadia, S. et al.
I: Monthly Notices of the Royal Astronomical Society, Bind 510, Nr. 4, 03.2022, s. 5035-5049.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

TY - JOUR

T1 - K2-99 revisited

T2 - A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant

AU - Smith, A. M.S.

AU - Breton, S. N.

AU - Csizmadia, S.

AU - Dai, F.

AU - Gandolfi, D.

AU - García, R. A.

AU - Howard, A. W.

AU - Isaacson, H.

AU - Korth, J.

AU - Lam, K. W.F.

AU - Mathur, S.

AU - Nowak, G.

AU - Hernández, F. Pérez

AU - Persson, C. M.

AU - Albrecht, S. H.

AU - Barragán, O.

AU - Cabrera, J.

AU - Cochran, W. D.

AU - Deeg, H. J.

AU - Fridlund, M.

AU - Georgie v a, I. Y.

AU - Gof fo, E.

AU - Guenther, E. W.

AU - Hatzes, A. P.

AU - Kabath, P.

AU - Livingston, J. H.

AU - Luque, R.

AU - Palle, E.

AU - Redfield, S.

AU - Rodler, F.

AU - Serrano, L. M.

AU - Van Eylen, V.

PY - 2022/3

Y1 - 2022/3

N2 - We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from K2's Campaign 17 allows us to refine the stellar properties. We find K2-99 to be significantly smaller than previously thought, with R = 2.55 ± 0.02 R. The new light curve also contains four transits of K2-99 b, which we use to improve our knowledge of the planetary properties. We find the planet to be a non-inflated warm Jupiter, with Rb = 1.06 ± 0.01 RJup. 60 new radial velocity measurements from HARPS, HARPS-N, and HIRES enable the determination of the orbital parameters of K2-99 c, which were previously poorly constrained. We find that this outer planet has a minimum mass Mcsin ic = 8.4 ± 0.2 MJup, and an eccentric orbit (ec = 0.210 ± 0.009) with a period of 522.2 ± 1.4 d. Upcoming TESS observations in 2022 have a good chance of detecting the transit of this planet, if the mutual inclination between the two planetary orbits is small.

AB - We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from K2's Campaign 17 allows us to refine the stellar properties. We find K2-99 to be significantly smaller than previously thought, with R = 2.55 ± 0.02 R. The new light curve also contains four transits of K2-99 b, which we use to improve our knowledge of the planetary properties. We find the planet to be a non-inflated warm Jupiter, with Rb = 1.06 ± 0.01 RJup. 60 new radial velocity measurements from HARPS, HARPS-N, and HIRES enable the determination of the orbital parameters of K2-99 c, which were previously poorly constrained. We find that this outer planet has a minimum mass Mcsin ic = 8.4 ± 0.2 MJup, and an eccentric orbit (ec = 0.210 ± 0.009) with a period of 522.2 ± 1.4 d. Upcoming TESS observations in 2022 have a good chance of detecting the transit of this planet, if the mutual inclination between the two planetary orbits is small.

KW - Planetary systems

KW - Planets and satellites: Detection

KW - Planets and satellites: Individual: K2-99 b

KW - Planets and satellites: Individual: K2-99 c

UR - http://www.scopus.com/inward/record.url?scp=85125025977&partnerID=8YFLogxK

U2 - 10.1093/mnras/stab3497

DO - 10.1093/mnras/stab3497

M3 - Journal article

AN - SCOPUS:85125025977

SN - 0035-8711

VL - 510

SP - 5035

EP - 5049

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

K2-99 revisited: A non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant

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