搜索结果: 1-10 共查到“天文学 Mechanisms”相关记录10条 . 查询时间(0.109 秒)
Distribution and supply mechanisms of high uranium concentration in the rivers of Okinawa Island, Japan
uranium river Okinawa Island guideline value supply mechanism
2017/4/10
Uranium concentrations in the rivers of Okinawa Island, Japan were determined in this study. Most rivers in the
southwestern area of the island showed high U concentrations, the highest of which was ...
Entrainment Mechanisms for Outflows in the L1551 Star-Forming Region
L1551 IRS5 formation
2014/12/24
We present high sensitivity 12CO and 13CO J=1!0 molecular line maps covering the full extent of the parsec scale L1551 molecular outflow, including the redshifted east-west (EW) flow. We also present ...
Manganese evolution in Omega Centauri: a clue to the cluster formation mechanisms?
nuclear reactions nucleosynthesis abundances – galaxies: evolution – globular clusters: individual: ω Centauri
2011/10/18
We model the evolution of manganese relative to iron in the progenitor system of the globular cluster Omega Centauri by means of a self-consistent chemical evolution model. We use stellar yields that ...
First observations of CN(2-1), HCO$^{+}$(3-2) and C$_{2}$H(3-2) emission lines in the Perseus cluster: constraints on heating mechanisms in the cluster gas
Astrochemistry - ISM:abundances - galaxies: intergalactic medium - Galaxies: clusters: individual:Perseus - galaxies: individual: NGC 1275 - Galaxies: cooling fl ows
2011/10/8
We present the first observations of emission lines of CN(2-1), HCO$^{+}$(3-2) and C$_{2}$H(3-2) in the Perseus cluster. We observed at two positions: directly at the central galaxy, NGC 1275 and also...
Uncovering Mechanisms of Coronal Magnetism via Advanced 3D Modeling of Flares and Active Regions
Uncovering Mechanisms of Coronal Magnetism 3D Modeling of Flares Active Regions
2010/11/15
The coming decade will see the routine use of solar data of unprecedented spatial and spectral resolution, time cadence, and completeness. To capitalize on the new (or soon to be available) facilities...
Brown Dwarf Jets: Investigating the Universality of Jet Launching Mechanisms at the Lowest Masses
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
Recently it has become apparent that proto-stellar-like outflow activity extends to the brown dwarf (BD) mass regime. While the presence of accretion appears to be the common ingredient in all objects...
The Sun is a mysterious star. The high temperature of the chromosphere and corona present one of the most puzzling problems of solar physics. Observations show that the solar coronal heating problem i...
Internal Heating of Old Neutron Stars: Contrasting Different Mechanisms
stars neutron dense matter stars rotation pulsars general pulsars individual (PSR J0437-4715)
2010/3/9
The thermal emission detected from the millisecond pulsar J0437-4715 is not explained by standard cooling models of neutron stars without a heating mechanism. We investigated three heating mechanisms ...
Physical mechanisms that shape the morphologies of extragalactic jets
morphologies extragalactic jets
2009/7/9
Physical mechanisms that shape the morphologies of extragalactic jets。
The Sun is a mysterious star. The high temperature of the chromosphere and corona present one of the most puzzling problems of solar physics. Observations show that the solar coronal heating problem ...