K2-99 : A subgiant hosting a transiting warm Jupiter in an eccentric orbit and a long-period companion
(2017) In Monthly Notices of the Royal Astronomical Society 464(3). p.2708-2716- Abstract
We report the discovery from K2 of a transiting planet in an 18.25-d, eccentric (0.19 ± 0.04) orbit around K2-99, an 11th magnitude subgiant in Virgo. We con- firm the planetary nature of the companion with radial velocities, and determine that the star is a metal-rich ([Fe/H] = 0.20 ± 0.05) subgiant, with mass 1.60+0.14 -0.10 M⊙ and radius 3.1 ± 0.1 R⊙. The planet has a mass of 0.97 ± 0.09 MJup and a radius 1.29 ± 0.05 RJup. A measured systemic radial acceleration of -2.12 ± 0.04 m s-1d-1 offers compelling evidence for the existence of a third body in the system, perhaps a brown dwarf orbiting with a period of several hundred days.
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- author
- publishing date
- 2017-01-21
- type
- Contribution to journal
- publication status
- published
- keywords
- Planetary systems, Planets and satellites: detection, Planets and satellites: individual: K2-99
- in
- Monthly Notices of the Royal Astronomical Society
- volume
- 464
- issue
- 3
- pages
- 9 pages
- publisher
- Oxford University Press
- external identifiers
-
- scopus:85006354711
- ISSN
- 0035-8711
- DOI
- 10.1093/mnras/stw2487
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2016 The Authors.
- id
- e47ec570-9dfd-42a3-a455-a1ae55ced51b
- date added to LUP
- 2023-02-03 09:31:08
- date last changed
- 2023-02-20 16:22:13
@article{e47ec570-9dfd-42a3-a455-a1ae55ced51b, abstract = {{<p>We report the discovery from K2 of a transiting planet in an 18.25-d, eccentric (0.19 ± 0.04) orbit around K2-99, an 11th magnitude subgiant in Virgo. We con- firm the planetary nature of the companion with radial velocities, and determine that the star is a metal-rich ([Fe/H] = 0.20 ± 0.05) subgiant, with mass 1.60+0.14 -0.10 M⊙ and radius 3.1 ± 0.1 R⊙. The planet has a mass of 0.97 ± 0.09 MJup and a radius 1.29 ± 0.05 RJup. A measured systemic radial acceleration of -2.12 ± 0.04 m s-1d-1 offers compelling evidence for the existence of a third body in the system, perhaps a brown dwarf orbiting with a period of several hundred days.</p>}}, author = {{Smith, A. M.S. and Gandolfi, D. and Barragán, O. and Bowler, B. and Csizmadia, Sz and Endl, M. and Fridlund, M. C.V. and Grziwa, S. and Guenther, E. and Hatzes, A. P. and Nowak, G. and Albrecht, S. and Alonso, R. and Cabrera, J. and Cochran, W. D. and Deeg, H. J. and Cusano, F. and Eigmüller, Ph and Erikson, A. and Hidalgo, D. and Hirano, T. and Johnson, M. C. and Korth, J. and Mann, A. and Narita, N. and Nespral, D. and Palle, E. and Pätzold, M. and Prieto-Arranz, J. and Rauer, H. and Ribas, I. and Tingley, B. and Wolthoff, V.}}, issn = {{0035-8711}}, keywords = {{Planetary systems; Planets and satellites: detection; Planets and satellites: individual: K2-99}}, language = {{eng}}, month = {{01}}, number = {{3}}, pages = {{2708--2716}}, publisher = {{Oxford University Press}}, series = {{Monthly Notices of the Royal Astronomical Society}}, title = {{K2-99 : A subgiant hosting a transiting warm Jupiter in an eccentric orbit and a long-period companion}}, url = {{http://dx.doi.org/10.1093/mnras/stw2487}}, doi = {{10.1093/mnras/stw2487}}, volume = {{464}}, year = {{2017}}, }