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K2-98b : A 32 M ⊕ NEPTUNE-SIZE PLANET in A 10 DAY ORBIT TRANSITING AN F8 STAR

Barragán, Oscar ; Grziwa, Sascha ; Gandolfi, Davide ; Fridlund, Malcolm ; Endl, Michael ; Deeg, Hans J. ; Cagigal, Manuel P. ; Lanza, Antonino F. ; Moroni, Pier G.Prada and Smith, Alexis M.S. , et al. (2016) In Astronomical Journal 152(6).
Abstract

We report the discovery of K2-98b (EPIC 211391664b), a transiting Neptune-size planet monitored by the K2 mission during its Campaign 5. We combine the K2 time-series data with ground-based photometric and spectroscopic follow-up observations to confirm the planetary nature of the object and derive its mass, radius, and orbital parameters. K2-98b is a warm Neptune-like planet in a 10 day orbit around a V = 12.2 mag F-type star with M ∗ = 1.074 ±0.042 M o, R ∗ = R o, and age of . We derive a planetary mass and radius of M p = 32.2 ±8.1 M ⊕ and R p = R ⊕. K2-98b joins the relatively small group of Neptune-size planets whose mass and radius have been... (More)

We report the discovery of K2-98b (EPIC 211391664b), a transiting Neptune-size planet monitored by the K2 mission during its Campaign 5. We combine the K2 time-series data with ground-based photometric and spectroscopic follow-up observations to confirm the planetary nature of the object and derive its mass, radius, and orbital parameters. K2-98b is a warm Neptune-like planet in a 10 day orbit around a V = 12.2 mag F-type star with M ∗ = 1.074 ±0.042 M o, R ∗ = R o, and age of . We derive a planetary mass and radius of M p = 32.2 ±8.1 M ⊕ and R p = R ⊕. K2-98b joins the relatively small group of Neptune-size planets whose mass and radius have been derived with a precision better than 25%. We estimate that the planet will be engulfed by its host star in ∼3 Gyr, due to the evolution of the latter toward the red giant branch.

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publishing date
type
Contribution to journal
publication status
published
keywords
planets and satellites: detection, planets and satellites: individual K2-98b (EPIC 211391664b), stars: fundamental parameters
in
Astronomical Journal
volume
152
issue
6
article number
193
publisher
IOP Publishing
external identifiers
  • scopus:85009152008
ISSN
0004-6256
DOI
10.3847/0004-6256/152/6/193
language
English
LU publication?
no
additional info
Publisher Copyright: © 2016. The American Astronomical Society. All rights reserved.
id
3e187d0d-a22e-4c34-a8f2-7717c0d5a21d
date added to LUP
2023-02-03 09:33:42
date last changed
2023-02-20 16:25:48
@article{3e187d0d-a22e-4c34-a8f2-7717c0d5a21d,
  abstract     = {{<p>We report the discovery of K2-98b (EPIC 211391664b), a transiting Neptune-size planet monitored by the K2 mission during its Campaign 5. We combine the K2 time-series data with ground-based photometric and spectroscopic follow-up observations to confirm the planetary nature of the object and derive its mass, radius, and orbital parameters. K2-98b is a warm Neptune-like planet in a 10 day orbit around a V = 12.2 mag F-type star with M <sub>∗</sub> = 1.074 ±0.042 M <sub>o</sub>, R <sub>∗</sub> = R <sub>o</sub>, and age of . We derive a planetary mass and radius of M <sub>p</sub> = 32.2 ±8.1 M <sub>⊕</sub> and R <sub>p</sub> = R <sub>⊕</sub>. K2-98b joins the relatively small group of Neptune-size planets whose mass and radius have been derived with a precision better than 25%. We estimate that the planet will be engulfed by its host star in ∼3 Gyr, due to the evolution of the latter toward the red giant branch.</p>}},
  author       = {{Barragán, Oscar and Grziwa, Sascha and Gandolfi, Davide and Fridlund, Malcolm and Endl, Michael and Deeg, Hans J. and Cagigal, Manuel P. and Lanza, Antonino F. and Moroni, Pier G.Prada and Smith, Alexis M.S. and Korth, Judith and Bedell, Megan and Cabrera, Juan and Cochran, William D. and Cusano, Felice and Csizmadia, Szilard and Eigmüller, Philipp and Erikson, Anders and Guenther, Eike W. and Hatzes, Artie P. and Nespral, David and Pätzold, Martin and Prieto-Arranz, Jorge and Rauer, Heike}},
  issn         = {{0004-6256}},
  keywords     = {{planets and satellites: detection; planets and satellites: individual K2-98b (EPIC 211391664b); stars: fundamental parameters}},
  language     = {{eng}},
  number       = {{6}},
  publisher    = {{IOP Publishing}},
  series       = {{Astronomical Journal}},
  title        = {{K2-98b : A 32 M <sub>⊕</sub> NEPTUNE-SIZE PLANET in A 10 DAY ORBIT TRANSITING AN F8 STAR}},
  url          = {{http://dx.doi.org/10.3847/0004-6256/152/6/193}},
  doi          = {{10.3847/0004-6256/152/6/193}},
  volume       = {{152}},
  year         = {{2016}},
}