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Mostrando ítems 1-10 de 2022

Chromospheric activity of stars with planets

Martins, Bruno Leonardo Canto; Chagas, M. L. das; Alves, S.; Leão, Izan de Castro; Souza Neto, L. P. de; Medeiros, José Renan de (Astronomy & Astrophysics, 2011)

Rossby numbers of fully convective and partially convective stars

Landin, Natália R.; Mendes, Luiz T. S. (Proceedings of the International Astronomical Union, 2019)

Ground-based detection of G star super ares with NGTS

Jackman, James A. G.; Jenkins, James Stewart (Oxford University Press, 2018-07)

We present high cadence detections of two superflares from a bright G8 star (V = 11.56) with the Next Generation Transit Survey (NGTS). We improve upon previous superflare detections by resolving the flare rise and peak, ...

Discussion: winds and magnetic fields of active OB stars

Bouret, Jean Claude; Cidale, Lydia Sonia (2011)

Fundamental parameters of Be stars located in the seismology fields of COROT

Frémat, Y.; Neiner, C.; Floquet, M.; Zorec, J.; Janot-Pacheco, E.; Medeiros, José Renan de (Astronomy & Astrophysics, 2006-05-04)

Quiescent and active phases in Be stars: a WISE snapshot of Young Galactic Open Clusters

Granada, Anahi; Jones, C. E.; Sigut, A.; Semaan, T.; Georgy, C.; Meynet, G.; Ekstrom, S. (IOP Publishing, 2018-01)

Through the modeling of near-infrared photometry of star-plus disk systems with the codes bedisk/beray, we successfully describe the Wide-Field Infrared Survey Explorer (WISE) photometric characteristics of Be stars in ...

Li-rich giant stars under scrutiny: binarity, magnetic activity, and the evolutionary status after Gaia DR2

Costa, Jefferson Soares da; Almeida, Leandro de; Castro, Matthieu Sebastien; Nascimento Júnior, José Dias do; Gonçalves, B. F. O (Oxford University Press, 2020-09-02)

Magnetic activity in the photosphere of CoRoT-Exo-2a: Active longitudes and short-term spot cycle in a young Sun-like star

Lanza, A. F.; Pagano, I.; Leto, G.; Messina, S.; Aigrain, S.; Alonso, R.; Auvergne, M.; Baglin, A.; Barge, P.; Bonomo, A. S.; Boumier, P.; Cameron, A. Collier; Comparato, M.; Cutispoto, G.; Medeiros, José Renan de; Foing, B.; Kaiser, A.; Moutou, C.; Parihar, P. S.; Silva-Valio, A.; Weiss, W. W. (Astronomy & Astrophysics, 2008)

First long-term activity study of AU Microscopii: a possible chromospheric cycle

Ibañez Bustos, Romina Valeria; Buccino, Andrea Paola; Flores, M.; Martinez, Cristian Israel; Maizel, Daniela; Messina, Sergio; Mauas, Pablo Jacobo David (Wiley Blackwell Publishing, Inc, 2019-02)

M stars are ideal targets to search for Earth-like planets. However, they usually have high levels of magnetic activity, which could affect their habitability and make difficult the detection of exoplanets orbiting around ...

Chemical composition of a sample of bright solar-metallicity stars

Caffau, E.; Mott, A.; Steffen, M.; Bonifacio, P.; Strassmeier, K. G.; Gallagher, A.; Faraggiana, R.; Sbordone, L. (WILEY-V C H VERLAG GMBH, 2015)

We present a detailed analysis of seven young stars observed with the spectrograph SOPHIE at the Observatoire de Haute-Provence for which the chemical composition was incomplete or absent in the literature. For five stars, ...

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