Connecting integrated RGB mass loss from asteroseismology and globular clusters

Autor: Brogaard, K., Miglio, A., van Rossem, W. E., Willett, E., Thomsen, J. S.

Context. Asteroseismic investigations of solar-like oscillations in giant stars enable the derivation of their masses and radii. For mono-age mono-metallicity populations of stars this allows the integrated red giant branch (RGB) mass loss to be esti

Externí odkaz: http://arxiv.org/abs/2410.08330

The EBLM Project XI. Mass, radius and effective temperature measurements for 23 M-dwarf companions to solar-type stars observed with CHEOPS

Autor: Swayne, M. I., Maxted, P. F. L., Triaud, A. H. M. J., Sousa, S. G., Deline, A., Ehrenreich, D., Hoyer, S., Olofsson, G., Boisse, I., Duck, A., Gill, S., Martin, D., McCormac, J., Persson, C. M., Santerne, A., Sebastian, D., Standing, M. R., Acuña, L., Alibert, Y., Alonso, R., Anglada, G., Bárczy, T., Navascues, D. Barrado, Barros, S. C. C., Baumjohann, W., Baycroft, T. A., Beck, M., Beck, T., Benz, W., Billot, N., Bonfils, X., Borsato, L., Bourrier, V., Brandeker, A., Broeg, C., Carmona, A., Charnoz, S., Cameron, A. Collier, Cortés-Zuleta, P., Csizmadia, Sz., Cubillos, P. E., Davies, M. B., Deleuil, M., Delfosse, X., Delrez, L., Demangeon, O. D. S., Demory, B. -O., Dransfield, G., Erikson, A., Fortier, A., Forveille, T., Fossati, L., Fridlund, M., Gandolfi, D., Gillon, M., Güdel, M., Günther, M. N., Hara, N., Hébrard, G., Heidari, N., Hellier, C., Helling, Ch., Isaak, K. G., Kerschbaum, F., Kiefer, F., Kiss, L. L., Kunovac, V., Lalitha, S., Lam, K. W. F., Laskar, J., Etangs, A. Lecavelier des, Lendl, M., Magrin, D., Marafatto, L., Martioli, E., Miller, N. J., Mordasini, C., Moutou, C., Nascimbeni, V., Ottensamer, R., Pagano, I., Pallé, E., Peter, G., Piazza, D., Piotto, G., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Rauer, H., Ribas, I., Santos, N. C., Scandariato, G., Ségransan, D., Simon, A. E., Smith, A. M. S., Southworth, R., Stalport, M., Szabó, Gy. M., Thomas, N., Udry, S., Ulmer, B., Van Grootel, V., Venturini, J., Walton, N. A., Willett, E., Wilson, T. G.

Observations of low-mass stars have frequently shown a disagreement between observed stellar radii and radii predicted by theoretical stellar structure models. This ``radius inflation'' problem could have an impact on both stellar and exoplanetary sc

Externí odkaz: http://arxiv.org/abs/2312.11339

An asteroseismic age estimate of the open cluster NGC 6866 using Kepler and Gaia

Autor: Brogaard, K., Arentoft, T., Miglio, A., Casali, G., Thomsen, J. S., Tailo, M., Montalbán, J., Grisoni, V., Willett, E., Stokholm, A., Grundahl, F., Stello, D., Sandquist, E. L.

Publikováno v: A&A 679, A23 (2023)

Asteroseismology of solar-like oscillations in giant stars allow the derivation of their masses and radii. For members of open clusters this allows an age estimate of the cluster which should be identical to the age estimate from the colour-magnitude

Externí odkaz: http://arxiv.org/abs/2308.12731

The EBLM project -- VIII. First results for M-dwarf mass, radius and effective temperature measurements using CHEOPS light curves

Autor: Swayne, M. I., Maxted, P. F. L., Triaud, A. H. M. J., Sousa, S. G., Broeg, C., Florén, H. -G., Guterman, P., Simon, A. E., Boisse, I., Bonfanti, A., Martin, D., Santerne, A., Salmon, S., Standing, M. R., Van Grootel, V., Wilson, T. G., Alibert, Y., Alonso, R., Escudé, G. Anglada, Asquier, J., Bárczy, T., Barrado, D., Barros, S. C. C., Battley, M., Baumjohann, W., Beck, M., Beck, T., Bekkelien, A., Benz, W., Billot, N., Bonfils, X., Brandeker, A., Busch, M. -D., Cabrera, J., Charnoz, S., Cameron, A. Collier, Csizmadia, Sz., Davies, M. B., Deleuil, M., Deline, A., Delrez, L., Demangeon, O. D. S., Demory, B. -O., Dransfield, G., Ehrenreich, D., Erikson, A., Fortier, A., Fossati, L., Fridlund, M., Futyan, D., Gandolfi, D., Gillon, M., Guedel, M., Hébrard, G., Heidari, N., Hellier, C., Heng, K., Hobson, M., Hoyer, S., Isaak, K. G., Kiss, L., Hodžić, V. Kunovac, Lalitha, S., Laskar, J., Etangs, A. Lecavelier des, Lendl, M., Lovis, C., Magrin, D., Marafatto, L., McCormac, J., Miller, N., Nascimbeni, V., Olofsson, G., Ottensamer, R., Pagano, I., Pallé, E., Peter, G., Piotto, G., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Rauer, H., Ribas, I., Santos, N. C., Scandariato, G., Ségransan, D., Smith, A. M. S., Steinberger, M., Steller, M., Szabó, Gy. M., Thomas, N., Udry, S., Walter, I., Walton, N. A., Willett, E.

Publikováno v: MNRAS 506 (2021) 306-322

The accuracy of theoretical mass, radius and effective temperature values for M-dwarf stars is an active topic of debate. Differences between observed and theoretical values have raised the possibility that current theoretical stellar structure and e

Externí odkaz: http://arxiv.org/abs/2106.07276