X-Shooting ULLYSES: massive stars at low metallicity. I. Project Description

Autor: Vink, Jorick S., Mehner, A., Crowther, P. A., Fullerton, A., Garcia, M., Martins, F., Morrell, N., Oskinova, L. M., St-Louis, N., ud-Doula, A., Sander, A. A. C., Sana, H., Bouret, J. -C., Kubatova, B., Marchant, P., Martins, L. P., Wofford, A., van Loon, J. Th., Telford, O. Grace, Gotberg, Y., Bowman, D. M., Erba, C., Kalari, V. M., Abdul-Masih, M., Alkousa, T., Backs, F., Barbosa, C. L., Berlanas, S. R., Bernini-Peron, M., Bestenlehner, J. M., Blomme, R., Bodensteiner, J., Brands, S. A., Evans, C. J., David-Uraz, A., Driessen, F. A., Dsilva, K., Geen, S., Gomez-Gonzalez, V. M. A., Grassitelli, L., Hamann, W. -R., Hawcroft, C., Herrero, A., Higgins, E. R., Hillier, D. John, Ignace, R., Istrate, A. G., Kaper, L., Kee, N. D., Kehrig, C., Keszthelyi, Z., Klencki, J., de Koter, A., Kuiper, R., Laplace, E., Larkin, C. J. K., Lefever, R. R., Leitherer, C., Lennon, D. J., Mahy, L., Apellaniz, J. Maiz, Maravelias, G., Marcolino, W., McLeod, A. F., de Mink, S. E., Najarro, F., Oey, M. S., Parsons, T. N., Pauli, D., Pedersen, M. G., Prinja, R. K., Ramachandran, V., Ramirez-Tannus, M. C., Sabhahit, G. N., Schootemeijer, A., Serantes, S. Reyero, Shenar, T., Stringfellow, G. S., Sudnik, N., Tramper, F., Wang, L.

Publikováno v: A&A 675, A154 (2023)

Observations of individual massive stars, super-luminous supernovae, gamma-ray bursts, and gravitational-wave events involving spectacular black-hole mergers, indicate that the low-metallicity Universe is fundamentally different from our own Galaxy.

Externí odkaz: http://arxiv.org/abs/2305.06376

The mass discrepancy in intermediate- and high-mass eclipsing binaries: the need for higher convective core masses

Autor: Tkachenko, A., Pavlovski, K., Johnston, C., Pedersen, M. G., Michielsen, M., Bowman, D. M., Southworth, J., Tsymbal, V., Aerts, C.

(Abridged) Eclipsing, spectroscopic double-lined binary star systems (SB2) are excellent laboratories for calibrating theories of stellar interior structure and evolution. We aim to investigate the mass discrepancy in binary stars. We study the effec

Externí odkaz: http://arxiv.org/abs/2003.08982

New $\beta$ Cep pulsators discovered with K2 space photometry

Autor: Burssens, S., Bowman, D. M., Aerts, C., Pedersen, M. G., Moravveji, E., Buysschaert, B.

We present the discovery of three new $\beta$ Cep pulsators, three new pulsators with frequency groupings, and frequency patterns in a B3Ib star, all of which show pulsations with frequencies as high as about 17 d$^{-1}$, with K2 space mission photom

Externí odkaz: http://arxiv.org/abs/1908.02836

Combined asteroseismology, spectroscopy, and astrometry of the CoRoT B2V target HD 170580

Autor: Aerts, C., Pedersen, M. G., Vermeyen, E., Hendriks, L., Johnston, C., Tkachenko, A., Pápics, P. I., Debosscher, J., Briquet, M., Thoul, A., Rainer, M., Poretti, E.

Publikováno v: A&A 624, A75 (2019)

Space asteroseismology reveals that stellar structure and evolution models of intermediate- and high-mass stars are in need of improvement in terms of angular momentum and chemical element transport. We aim to probe the interior structure of a hot ma

Externí odkaz: http://arxiv.org/abs/1902.04093

On the photometric detection of Internal Gravity Waves in upper main-sequence stars I. Methodology and application to CoRoT targets

Autor: Bowman, D. M., Aerts, C., Johnston, C., Pedersen, M. G., Rogers, T. M., Edelmann, P. V. F., Simón-Díaz, S., Van Reeth, T., Buysschaert, B., Tkachenko, A., Triana, S. A.

Publikováno v: A&A 621, A135 (2019)

Context. Main sequence stars with a convective core are predicted to stochastically excite Internal Gravity Waves (IGWs), which effectively transport angular momentum throughout the stellar interior and explain the observed near-uniform interior rota

Externí odkaz: http://arxiv.org/abs/1811.08023