|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'500'096
Articles rated: 2609
18 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet | | Johanna Teske
; Matías R. Díaz
; Rafael Luque
; Teo Močnik
; Julia V. Seidel
; Jon Fernández Otegi
; Fabo Feng
; James S. Jenkins
; Enric Pallè
; Damien Ségransan
; Stèphane Udry
; Karen A. Collins
; Jason D. Eastman
; George R. Ricker
; Roland Vanderspek
; David W. Latham
; Sara Seager
; Joshua N. Winn
; Jon M. Jenkins
; David. R. Anderson
; Thomas Barclay
; François Bouchy
; Jennifer A. Burt
; R. Paul Butler
; Douglas A. Caldwell
; Kevin I. Collins
; Jeffrey D. Crane
; Caroline Dorn
; Erin Flowers
; Jonas Haldemann
; Ravit Helled
; Coel Hellier
; Eric L. N. Jensen
; Stephen R. Kane
; Nicholas Law
; Jack J. Lissauer
; Andrew W. Mann
; Maxime Marmier
; Louise Dyregaard Nielsen
; Mark E. Rose
; Stephen A. Shectman
; Avi Shporer
; Guillermo Torres
; Sharon X. Wang
; Angie Wolfgang
; Ian Wong
; Carl Ziegler
; | | Date: |
28 Jul 2020 | | Abstract: | The Transiting Exoplanet Survey Satellite mission was designed to find
transiting planets around bright, nearby stars. Here we present the detection
and mass measurement of a small, short-period ($approx,4$,days) transiting
planet around the bright ($V=7.9$), solar-type star HD 86226 (TOI-652, TIC
22221375), previously known to host a long-period ($sim$1600 days) giant
planet. HD 86226c (TOI-652.01) has a radius of $2.16pm0.08$ $R_{oplus}$ and a
mass of 7.25$^{+1.19}_{-1.12}$ $M_{oplus}$ based on archival and new radial
velocity data. We also update the parameters of the longer-period,
not-known-to-transit planet, and find it to be less eccentric and less massive
than previously reported. The density of the transiting planet is $3.97$ g
cm$^{-3}$, which is low enough to suggest that the planet has at least a small
volatile envelope, but the mass fractions of rock, iron, and water are not
well-constrained. Given the host star brightness, planet period, and location
of the planet near both the ’’radius gap’’ and the ’’hot Neptune desert’’, HD
86226c is an interesting candidate for transmission spectroscopy to further
refine its composition. | | Source: | arXiv, 2007.13927 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER