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38 papers · 1 filter
Statistical analysis of asteroseismic indices and stellar parameters of TESS-observed Scuti stars
C. Lv, A. Esamdin, A. Hasanzadeh +4
We analyze the statistical properties and asteroseismic indices of delta Scuti stars observed during TESS Cycle 4. Using 2 minute cadence photometry and Fourier analysis, we identi…
The CARMENES search for exoplanets around M dwarfs. A homogeneous catalogue of projected rotational velocities accounting for limb-darkening
R. Varas, G. Morello, M. Zechmeister +18
Stellar rotation is closely linked to both age and magnetic activity. Through gyrochronology, it provides a means to estimate stellar ages and trace the evolution of planetary syst…
Lithium and the evolution of intermediate-mass T Tauri and Herbig stars. Rotation, accretion, and planets
I. Mendigutía, J. Campbell-White, B. Montesinos +9
(Abridged) We contribute to our understanding of the evolution of young intermediate-mass stars by providing a comprehensive analysis of their lithium (Li) content. A sample of 71…
The PL diagram for Sct stars: back in business as distance estimators
A. García Hernández, J. Pascual-Granado, M. Lares-Martiz +4
In this work, we focus on the period-luminosity relation (PLR) of Sct stars, in which mode excitation and selection mechanisms are still poorly constrained, and whose structure…
The carbon star mystery: forty years later
Oscar Straniero, Carlos Abia, Inmaculata Dominguez
In 1981 Icko Iben Jr published a paper entitled 'The carbon star mystery: why do the low mass ones become such, and where have all the high mass ones gone?', where he discussed the…
Chandrasekhar-mass white dwarfs are the progenitors of a small fraction of Type Ia supernovae according to nucleosythesis constraints
Eduardo Bravo, Luciano Piersanti, Stéphane Blondin +3
The precise progenitor system of type Ia supernovae (SNe Ia), whether it is a white dwarf (WD) close to the Chandrasekhar limit or substantially less massive, has been a matter of…