J 2022

TOI-1670 b and c: An Inner Sub-Neptune with an Outer Warm Jupiter Unlikely to Have Originated from High-eccentricity Migration

TRAN, Quang H.; Brendan P. BOWLER; Michael ENDL; William D. COCHRAN; Phillip J. MACQUEEN et. al.

Základní údaje

Originální název

TOI-1670 b and c: An Inner Sub-Neptune with an Outer Warm Jupiter Unlikely to Have Originated from High-eccentricity Migration

Autoři

TRAN, Quang H.; Brendan P. BOWLER; Michael ENDL; William D. COCHRAN; Phillip J. MACQUEEN; Davide GANDOLFI; Carina M. PERSSON; Malcolm FRIDLUND; Enric PALLE; Grzegorz NOWAK; Hans J. DEEG; Rafael LUQUE; John H. LIVINGSTON; Petr KABATH; Marek SKARKA (203 Česká republika, domácí); Jan SUBJAK; Steve B. HOWELL; Simon H. ALBRECHT; Karen A. COLLINS; Massimiliano ESPOSITO; Van Eylen VINCENT; Sascha GRZIWA; Elisa GOFFO; Chelsea X. HUANG; Jon M. JENKINS; Marie KARJALAINEN; Raine KARJALAINEN; Emil KNUDSTRUP; Judith KORTH; Kristine W. F. LAM; David W. LATHAM; Alan M. LEVINE; H. L. M. OSBORNE; Samuel N. QUINN; Seth REDFIELD; George R. RICKER; S. SEAGER; Luisa Maria SERRANO; Alexis M. S. SMITH; Joseph D. TWICKEN a Joshua N. WINN

Vydání

Astronomical Journal, IOP Publishing Ltd, 2022, 0004-6256

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 5.300

Kód RIV

RIV/00216224:14310/22:00127833

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000785598300001

EID Scopus

2-s2.0-85129611035

Klíčová slova anglicky

planetary systems; planets and satellites: detection; stars: individual (TOI-1670)

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 10. 1. 2023 09:47, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We report the discovery of two transiting planets around the bright (V = 9.9 mag) main-sequence F7 star TOI-1670 by the Transiting Exoplanet Survey Satellite. TOI-1670 b is a sub-Neptune (R-b = 2.06(-0.15)(+0.19) R-circle plus) on a 10.9 day orbit, and TOI-1670 c is a warm Jupiter (R-c= 0.987(-0.025)(+0.025) R-Jup) on a 40.7 day orbit. Using radial velocity observations gathered with the Tull Coude Spectrograph on the Harlan J. Smith telescope and HARPS-N on the Telescopio Nazionale Galileo, we find a planet mass of M-c = 0.63(-0.08)(+0.09) M(Jup )for the outer warm Jupiter, implying a mean density of rho(c) = 0.81(-0.11)(+0.13) g cm(-3). The inner sub-Neptune is undetected in our radial velocity data (M-b < 0.13 M-Jup at the 99% confidence level). Multiplanet systems like TOI-1670 hosting an outer warm Jupiter on a nearly circular orbit (l(e) = 0.09(-0.04)(+0.05)) and one or more inner coplanar planets are more consistent with "gentle" formation mechanisms such as disk migration or in situ formation rather than high-eccentricity migration. Of the 11 known systems with a warm Jupiter and a smaller inner companion, eight (73%) are near a low-order mean-motion resonance, which can be a signature of migration. TOI-1670 joins two other systems (27% of this subsample) with period commensurabilities greater than 3, a common feature of in situ formation or halted inward migration. TOI-1670 and the handful of similar systems support a diversity of formation pathways for warm Jupiters.