Grids of stellar models with rotation VII: models from 0.8 to 300 M-circle dot at supersolar metallicity (Z=0.020) (2022)
Journal Article
Yusof, N., Hirschi, R., Eggenberger, P., Ekström, S., Georgy, C., Sibony, Y., Crowther, P. A., Meynet, G., Abu Kassim, H., Aishah Wan Harun, W., Maeder, A., Groh, J. H., Farrell, E., & Murphy, L. (2022). Grids of stellar models with rotation VII: models from 0.8 to 300 M-circle dot at supersolar metallicity (Z=0.020). Monthly Notices of the Royal Astronomical Society, 511(2), 2814 - 2828. https://doi.org/10.1093/mnras/stac230

We present a grid of stellar models at supersolar metallicity (Z = 0.020) extending the previous grids of Geneva models at solar and sub-solar metallicities. A metallicity of Z = 0.020 was chosen to match that of the inner Galactic disc. A modest inc... Read More about Grids of stellar models with rotation VII: models from 0.8 to 300 M-circle dot at supersolar metallicity (Z=0.020).

Convective core sizes in rotating massive stars: I. Constraints from solar metallicity OB field stars (2021)
Journal Article
Martinet, S., Meynet, G., Ekström, S., Simón-Díaz, S., Holgado, G., Castro, N., Georgy, C., Eggenberger, P., Buldgen, G., Salmon, S., Hirschi, R., Groh, J., Farrell, E., & Murphy, L. (2021). Convective core sizes in rotating massive stars: I. Constraints from solar metallicity OB field stars. Astronomy & Astrophysics, 648, Article A126. https://doi.org/10.1051/0004-6361/202039426

Context. Spectroscopic studies of Galactic O and B stars show that many stars with masses above 8 M? have been observed in the Hertzsprung-Russell (HR) diagram just beyond the main-sequence (MS) band, as predicted by stellar models computed with a mo... Read More about Convective core sizes in rotating massive stars: I. Constraints from solar metallicity OB field stars.

Reevaluation of the Ne-23(alpha, gamma)Mg-26 and Ne-22(alpha, n)Mg-25 reaction (2021)
Journal Article
Adsley, P., Battino, U., Best, A., Caciolli, A., Guglielmetti, A., Imbriani, G., Jayatissa, H., La Cognata, M., Lamia, L., Masha, E., Massimi, C., Palmerini, S., Tattersall, A., & Hirschi, R. (2021). Reevaluation of the Ne-23(alpha, gamma)Mg-26 and Ne-22(alpha, n)Mg-25 reaction. Physical Review C, 103(1), https://doi.org/10.1103/PhysRevC.103.015805

Background: The competing 22Ne(a,?)26Mg and 22Ne(a,n)25Mg reactions control the production of neutrons for the weak s process in massive and asymptotic giant branch (AGB) stars. In both systems, the ratio between the corresponding reaction rates stro... Read More about Reevaluation of the Ne-23(alpha, gamma)Mg-26 and Ne-22(alpha, n)Mg-25 reaction.