Results 21 to 30 of about 1,262,170 (343)

TOI-5375 B: A Very Low Mass Star at the Hydrogen-burning Limit Orbiting an Early M-type Star

open access: yesThe Astronomical Journal, 2023
The Transiting Exoplanet Survey Satellite (TESS) mission detected a companion orbiting TIC 71268730, categorized it as a planet candidate, and designated the system TOI-5375.
Mika Lambert   +18 more
doaj   +1 more source

Rotation of Low-mass Stars in Taurus with K2 [PDF]

open access: yesAstronomical Journal, 2020
We present an analysis of K2 light curves (LCs) from Campaigns 4 and 13 for members of the young (∼3 Myr) Taurus association, in addition to an older (∼30 Myr) population of stars that is largely in the foreground of the Taurus molecular clouds.
L. Rebull   +6 more
semanticscholar   +1 more source

Influence of the initial orbital period and accretion efficiency on the low-mass binary evolution [PDF]

open access: yesSerbian Astronomical Journal, 2021
This paper presents detailed evolutionary models of low-mass binary systems (1.25 + 1 M⊙) with initial orbital periods of 10, 50 and 100 days and accretion efficiency of 10%, 20%, 50%, and a conservative assumption.
Petrović J.
doaj   +1 more source

New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit [PDF]

open access: yes, 2015
We present new models for low-mass stars down to the hydrogen-burning limit that consistently couple atmosphere and interior structures, thereby superseding the widely used BCAH98 models.
I. Baraffe   +4 more
semanticscholar   +1 more source

A Temporary Epoch of Stalled Spin-down for Low-mass Stars: Insights from NGC 6811 with Gaia and Kepler [PDF]

open access: yesAstrophysical Journal, 2019
Stellar rotation was proposed as a potential age diagnostic that is precise, simple, and applicable to a broad range of low-mass stars ( 1 ). Unfortunately, rotation period ( ) measurements of low-mass members of open clusters have undermined the idea ...
J. Curtis   +3 more
semanticscholar   +1 more source

Evolution of the Radius Valley around Low-mass Stars from Kepler and K2 [PDF]

open access: yesAstronomical Journal, 2019
We present calculations of the occurrence rate of small close-in planets around low-mass dwarf stars using the known planet populations from the Kepler and K2 missions.
R. Cloutier, K. Menou
semanticscholar   +1 more source

Evolutionary Models for Very Low-Mass Stars and Brown Dwarfs with Dusty Atmospheres [PDF]

open access: yes, 2000
We present evolutionary calculations for very low-mass stars and brown dwarfs based on synthetic spectra and nongray atmosphere models which include dust formation and opacity, i.e., objects with Teff ≲ 2800 K.
G. Chabrier   +5 more
semanticscholar   +1 more source

Semiconvective mixing in low-mass stars [PDF]

open access: yesAstrophysics and Space Science, 2010
Conference Proceedings HELAS Workshop on 'Synergies between solar and stellar modelling', Rome, June 2009, Astrophys.
Silva Aguirre, V.   +3 more
openaire   +4 more sources

The EBLM Project—From False Positives to Benchmark Stars and Circumbinary Exoplanets

open access: yesUniverse, 2023
The EBLM project aims to characterise very-low-mass stars that are companions to solar-type stars in eclipsing binaries. We describe the history and motivation for this project, the methodology we use to obtain the precise mass, radius, and effective ...
Pierre F. L. Maxted   +2 more
doaj   +1 more source

Magnetic Inhibition of Convection and the Fundamental Properties of Low-Mass Stars. III. A Consistent 10 Myr Age for the Upper Scorpius OB Association [PDF]

open access: yes, 2016
When determining absolute ages of identifiably young stellar populations, results strongly depend on which stars are studied. Cooler (K, M) stars typically yield ages that are systematically younger than warmer (A, F, G) stars by a factor of two.
G. Feiden
semanticscholar   +1 more source

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