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Great strides have been made in the last two decades in determining how galaxies evolve from their initial dark matter seeds to the complex structures we observe at z = 0. The role of mergers has been...
The spatial distribution of star formation in the solar neighbourhood: do all stars form in dense clusters?
low-mass neighbours Spitzer Space Telescope
2014/12/20
We present a global study of low-mass, young stellar object (YSO) surface densities (ヒ) in nearby (<500 >pc) star-forming regions based on a comprehensive collection of Spitzer Space Telescope surveys...
Young binary star system may form planets with weird and wild orbits
Young binary star system planets with weird wild orbits
2014/7/30
Unlike our solitary Sun, most stars form in binary pairs -- two stars that orbit a common center of mass. Though remarkably plentiful, binaries pose a number of questions, including how and where plan...
'Death stars' in Orion blast planets before they even form（图）
Death stars they even form planets
2014/3/10
The Orion Nebula is home to hundreds of young stars and even younger protostars known as proplyds. Many of these nascent systems will go on to develop planets, while others will have their planet-form...
A Lower Limit on the Halo Mass to form Supermassive Black Holes
black hole physics — hydrodynamics— galaxies: nuclei—accretion:accretion discs
2011/7/18
We consider a scenario where supermassive black holes form through direct accumulation of gas at the centre of proto-galaxies. In the first stage, the accumulated gas forms a super-massive star whose ...
The CHARA Array is a six 1-m telescope optical and near infrared interferometer located at the Mount Wilson Observatory in southern California and operated by the Center for High Angular Resolution As...
How do dwarf galaxies acquire their mass & when do they form their stars?
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/10/7
We apply a simple, one-equation, galaxy formation model on top of the halos and subhalos of a high-resolution dark matter cosmological simulation to study how dwarf galaxies acquire their mass and, fo...
The composite form of the supernova remnant 3C 400.2：two interacting supernova remnants or a single supernova remnant with a blow-out?
the supernova supernova remnant 3C 400.2
2009/6/30
The composite form of the supernova remnant 3C 400.2：two interacting supernova remnants or a single supernova remnant with a blow-out?
On the Stability of a Self-Gravitating Inhomogeneous Fluid in the Form of Two Confocal Ellipsoids Carrying Dedekind-Type Internal Currents
Self-Gravitating Inhomogeneous Fluid Confocal Ellipsoids Internal Currents
2009/6/18
On the Stability of a Self-Gravitating Inhomogeneous Fluid in the Form of Two Confocal Ellipsoids Carrying Dedekind-Type Internal Currents。
On the Stability of a Self-Gravitating Inhomogeneous Fluid in the Form of Two Confocal Spheroids Rotating with Different Angular Velocities
Self-Gravitating Inhomogeneous Fluid Angular Velocities Confocal Spheroids Rotating
2009/6/4
On the Stability of a Self-Gravitating Inhomogeneous Fluid in the Form of Two Confocal Spheroids Rotating with Different Angular Velocities。
Homotopy Continuation Method of Arbitrary Order of Convergence for Solving the Hyperbolic Form of Kepler’s Equation
Homotopy method hyperbolic Kepler’s equation initial value problem orbit determination
2009/5/12
In this paper, an efficient iterative method of arbitrary integer
order of convergence ≥ 2 has been established for solving the hyperbolic
form of Kepler’s equation. The method is of a dynamic natur...
Homotopy Continuation Method of Arbitrary Order of Convergence for Solving the Hyperbolic Form of Kepler’s Equation
hyperbolic Kepler’s equation initial value problem orbit determination
2007/1/10
In this paper, an efficient iterative method of arbitrary integer order of convergence ≥ 2 has been established for solving the hyperbolic form of Kepler’s equation. The method is of a dynamic nature ...