Two Earth-size planets and an Earth-size candidate transiting the nearby star HD 101581

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F25%3A00603206" target="_blank" >RIV/61389021:_____/25:00603206 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985815:_____/25:00603206 RIV/00216224:14310/25:00140471

Výsledek na webu

<a href="https://hdl.handle.net/11104/0366035" target="_blank" >https://hdl.handle.net/11104/0366035</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-3881/ad9266" target="_blank" >10.3847/1538-3881/ad9266</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Two Earth-size planets and an Earth-size candidate transiting the nearby star HD 101581

Popis výsledku v původním jazyce

We report the validation of multiple planets transiting the nearby (d = 12.8 pc) K5V dwarf HD 101581 (GJ 435, TOI-6276, TIC 397362481). This system consists of at least two Earth-size planets whose orbits are near a mutual 4:3 mean-motion resonance, HD 101581 b ( R-p=0.956(-0.061)(+0.063 )R(circle plus) , P = 4.47 days) and HD 101581c ( R-p=0.990(-0.070)(+0.070 )R(circle plus) , P = 6.21 days). Both planets were discovered in Sectors 63 and 64 TESS observations and statistically validated with supporting ground-based follow-up. We also identify a signal that probably originates from a third transiting planet, TOI-6276.03 ( R-p=0.982(-0.098)(+0.114 )R(circle plus), P = 7.87 days). These planets are remarkably uniform in size and their orbits are evenly spaced, representing a prime example of the 'peas-in-a-pod' architecture seen in other compact multiplanet systems. At V = 7.77, HD 101581 is the brightest star known to host multiple transiting planets smaller than 1.5 R (circle plus). HD 101581 is a promising system for atmospheric characterization and comparative planetology of small planets.

Název v anglickém jazyce

Two Earth-size planets and an Earth-size candidate transiting the nearby star HD 101581

Popis výsledku anglicky

We report the validation of multiple planets transiting the nearby (d = 12.8 pc) K5V dwarf HD 101581 (GJ 435, TOI-6276, TIC 397362481). This system consists of at least two Earth-size planets whose orbits are near a mutual 4:3 mean-motion resonance, HD 101581 b ( R-p=0.956(-0.061)(+0.063 )R(circle plus) , P = 4.47 days) and HD 101581c ( R-p=0.990(-0.070)(+0.070 )R(circle plus) , P = 6.21 days). Both planets were discovered in Sectors 63 and 64 TESS observations and statistically validated with supporting ground-based follow-up. We also identify a signal that probably originates from a third transiting planet, TOI-6276.03 ( R-p=0.982(-0.098)(+0.114 )R(circle plus), P = 7.87 days). These planets are remarkably uniform in size and their orbits are evenly spaced, representing a prime example of the 'peas-in-a-pod' architecture seen in other compact multiplanet systems. At V = 7.77, HD 101581 is the brightest star known to host multiple transiting planets smaller than 1.5 R (circle plus). HD 101581 is a promising system for atmospheric characterization and comparative planetology of small planets.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomical Journal

ISSN

0004-6256

e-ISSN

1538-3881

Svazek periodika

169

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

47

Kód UT WoS článku

001382870700001

EID výsledku v databázi Scopus

2-s2.0-86000184921