审问
发表于 2025-3-30 09:33:11
White Dwarfs and the Local Mass Density,heoretically calculated within models of Galactic evolution. Depending on the details of these models the invisible mass fraction in the solar neighbourhood is of the order of 2 ... or 4% of the dynamical mass. A redetermination of the white dwarf birth rate yields a somewhat higher value than curre
Truculent
发表于 2025-3-30 12:47:29
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ineptitude
发表于 2025-3-30 19:26:32
The Galactic Distribution of Neutron Stars,apse of massive stars and reveal themselves as pulsars for perhaps a few million years before they fade into obscurity, unless they are given a further burst of life by accretion of external material. In this case we may see them as low-mass X-ray binary systems and then millisecond pulsars or else
voluble
发表于 2025-3-30 23:08:10
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展览
发表于 2025-3-31 01:32:09
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clarify
发表于 2025-3-31 07:51:59
Systematic Properties of Rotation Curves and Dark Matter,ating in the inner parts of the galaxy, while dark matter dominates beyond the optical radius. The mass-to-light ratio of the luminous material, corrected for variations in the present rate of star formation, is remarkably constant and in agreement with classical population synthesis models. Rotatio
maladorit
发表于 2025-3-31 11:31:40
Are There Massive Black Holes in Galactic Nuclei?,bably massive black holes, which lurk at the . of such normal galaxies as M31, and perhaps even our own. This subject is approached historically by considering the cosmic history of the quasar population. The evidence for massive black holes in the centres of some nearby galaxies is reviewed. Some i
ELATE
发表于 2025-3-31 17:19:25
The Formation of Dark Matter in Cooling Flows, of ~ 100 . . . and greater. The cooled product is not yet observed but is proposed to be some form of low-mass star (perhaps brown dwarf or even jupiter-mass objects). Cooling flows must form baryonic dark matter. A scenario for low-mass star formation in a cooling flow is presented here. The main
Migratory
发表于 2025-3-31 20:05:24
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heterodox
发表于 2025-3-31 22:40:24
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