Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Lima, J. J. G."'
Publikováno v:
A&A 664, A176 (2022)
Context. There are recent observational evidences that RY Tau may present two different outflow stages, a quiescent one and a more active one. We try to model that phenomenon. Aims. We have performed new 2.5D magneto-hydrodynamical simulations of the
Externí odkaz:
http://arxiv.org/abs/2206.08015
Autor:
de Albuquerque, R. M. G., Gameiro, J. F., Alencar, S. H. P., Lima, J. J. G., Sauty, C., Melo, C.
Publikováno v:
A&A 636, A86 (2020)
Although the Orion Nebula Cluster is one of the most studied clusters in the solar neighborhood, the evolution of the very low-mass members ($M_* < 0.25 \, M_\odot$) has not been fully addressed due to their faintness. Our goal is to verify if some y
Externí odkaz:
http://arxiv.org/abs/2003.09511
Akademický článek
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In this paper we focus on the construction of stellar outflow models emerging from a polar coronal hole-type region surrounded by a magnetosphere in the equatorial regions during phases of quiescent accretion. The models are based on initial analytic
Externí odkaz:
http://arxiv.org/abs/1602.08052
Autor:
Oshagh, M., Santos, N. C., Figueira, P., Adibekyan, V. Zh., Santerne, A., Barros, S. C. C., Lima, J. J. G.
Publikováno v:
A&A 583, L1 (2015)
We assess a physically feasible explanation for the low number of discovered (near-)grazing planetary transits through all ground and space based transit surveys. We performed simulations to generate the synthetic distribution of detectable planets b
Externí odkaz:
http://arxiv.org/abs/1510.00841
Young stellar object observations suggest that some jets rotate in the opposite direction with respect to their disk. In a recent study, Sauty et al. (2012) have shown that this does not contradict the magnetocentrifugal mechanism that is believed to
Externí odkaz:
http://arxiv.org/abs/1404.7427
Small cyclic variations in the frequencies of acoustic modes are expected to be a common phenomenon in solar-like pulsators, as a result of stellar magnetic activity cycles. The frequency variations observed throughout the solar and stellar cycles co
Externí odkaz:
http://arxiv.org/abs/1211.6008
Rotation measurement in jets from T Tauri stars is a rather difficult task. Some jets seem to be rotating in a direction opposite to that of the underlying disk, although it is not yet clear if this affects the totality or part of the outflows. On th
Externí odkaz:
http://arxiv.org/abs/1210.3816
Context: A large sample of T Tauri stars exhibits optical jets, approximately half of which rotate slowly, only at ten per cent of their breakup velocity. The disk-locking mechanism has been shown to be inefficient to explain this observational fact.
Externí odkaz:
http://arxiv.org/abs/1107.2510
The concentration of magnetic flux near the poles of rapidly rotating cool stars has been recently proposed as an alternative mechanism to dynamo saturation in order to explain the saturation of angular momentum loss. In this work we study the effect
Externí odkaz:
http://arxiv.org/abs/0707.3588