|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The GAPS Programme at TNG XXVIII -- A pair of hot-Neptunes orbiting the young star TOI-942 | | Ilaria Carleo
; Silvano Desidera
; Domenico Nardiello
; Luca Malavolta
; Antonino F. Lanza
; John Livingston
; Daniele Locci
; Francesco Marzari
; Sergio Messina
; Diego Turrini
; Martina Baratella
; Francesco Borsa
; Valentina D'Orazi
; Valerio Nascimbeni
; Matteo Pinamonti
; Monica Rainer
; Eleonora Alei
; Andrea Bignamini
; Raffaele Gratton
; Giuseppina Micela
; Marco Montalto
; Alessandro Sozzetti
; Vito Squicciarini
; Laura Affer
; Serena Benatti
; Katia Biazzo
; Aldo S. Bonomo
; Riccardo Claudi
; Rosario Cosentino
; Elvira Covino
; Mario Damasso
; Massimiliano Esposito
; Aldo Fiorenzano
; Giuseppe Frustagli
; Paolo Giacobbe
; Avet Harutyunyan
; Giuseppe Leto
; Antonio Magazzú
; Antonio Maggio
; Giovanni Mainella
; Jesus Maldonado
; Matthias Mallonn
; Luigi Mancini
; Emilio Molinari
; Marco Molinaro
; Isabella Pagano
; Marco Pedani
; Giampaolo Piotto
; Ennio Poretti
; Seth Redfield
; Gaetano Scandariato
; | | Date: |
27 Nov 2020 | | Abstract: | Both young stars and multi-planet systems are primary objects that allow us
to study, understand and constrain planetary formation and evolution theories.
We validate the physical nature of two Neptune-type planets transiting TOI-942
(TYC 5909-319-1), a previously unacknowledged young star (50+30-20 Myr)
observed by the TESS space mission in Sector 5. Thanks to a comprehensive
stellar characterization, TESS light curve modelling and precise
radial-velocity measurements, we validated the planetary nature of the TESS
candidate and detect an additional transiting planet in the system on a larger
orbit. From photometric and spectroscopic observations we performed an
exhaustive stellar characterization and derived the main stellar parameters.
TOI-942 is a relatively active K2.5V star (logR’hk = -4.17+-0.01) with rotation
period Prot = 3.39+-0.01 days, a projected rotation velocity vsini=13.8+-0.5
km/s and a radius of ~0.9 Rsun. We found that the inner planet, TOI-942b, has
an orbital period Pb=4.3263+-0.0011 days, a radius Rb=4.242-0.313+0.376 Rearth
and a mass upper limit of 16 Mearth at 1-sigma confidence level. The outer
planet, TOI-942c, has an orbital period Pc=10.1605-0.0053+0.0056 days, a radius
Rc=4.793-0.351+0.410 Rearth and a mass upper limit of 37 Mearth at 1-sigma
confidence level. | | Source: | arXiv, 2011.13795 | | 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 Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER