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YBC, a stellar bolometric corrections database with variable extinction coefficients: an application to PARSEC isochrones
Yang Chen, Léo Girardi, Xiaoting Fu +7
We present the \texttt{YBC} database of stellar bolometric corrections (BCs), available at \url{http://stev.oapd.inaf.it/YBC}. We homogenize widely-used theoretical stellar spectra…
Evolutionary models for ultracool dwarfs
Catarina S. Fernandes, Valerie Van Grootel, Sebastien J. A. J. Salmon +5
Ultracool dwarfs have emerged as key targets for searches of transiting exoplanets. Precise estimates of the host parameters (including mass, age, and radius) are fundamental to co…
The mass-loss, expansion velocities and dust production rates of carbon stars in the Magellanic Clouds
Ambra Nanni, Martin A. T. Groenewegen, Bernhard Aringer +5
The properties of carbon stars in the Magellanic Clouds (MCs) and their total dust production rates are predicted by fitting their spectral energy distributions (SED) over pre-comp…
A Dramatic Decrease in Carbon Star Formation in M31
M. L. Boyer, B. F. Williams, B. Aringer +8
We analyze resolved stellar near-infrared photometry of 21 HST fields in M31 to constrain the impact of metallicity on the formation of carbon stars. Observations of nearby galaxie…
Carbon stars with increased oxygen and nitrogen abundances: hydrostatic dust-free model atmospheres
Bernhard Aringer, Paola Marigo, Walter Nowotny +3
We have computed a grid of hydrostatic spherical COMARCS models for C stars covering metallicities from [Z/H]=0 to -2 and values of the carbon excess [C-O] from 6.41 to 9.15, plus…
An extensive grid of DARWIN models for M-type AGB stars I. Mass-loss rates and other properties of dust-driven winds
S. Bladh, S. Liljegren, S. Höfner +2
The purpose of this work is to present an extensive grid of dynamical atmosphere and wind models for M-type AGB stars, covering a wide range of relevant stellar parameters. We used…