The first ones favor a quick evolution of the Galactic bulge, and the seconds a much slower one.F. CuisinierJ. KoppenA. AckerW. J. MacielConference on Ionized Gaseous Nebulae
The chemical composition of both the star and the nebula are determined. Both are Carbon-rich. The nebula presents evidence of depletion of elements Mg, Si, S, Cl (0.5 dex lower than solar) and Fe (2.9 dex lower than solar). This is the first self-consistent stellar and nebular model ...
But they will interact in the future! Because the sunlike star will turn into a red giant! And then matter will stream from the red giant onto the white dwarf, and then this stellar pair will become a cataclysmic binary. GK Persei, a cataclysmic binary star, had a brilliant outburst in ...
Amongst those parameters, the stellar density was found to be consistent with a complementary, concurrent asteroseismic analysis. In a first, the 3D orientation of the planets was constrained from the lack of transit-duration variations. The system yielded insights into the composition and evolution ...
We have seen in Figure 7 that the measured masses and radii of transiting planets can be globally explained in the framework of an evolution model including the strong stellar irradiation and the presence of a variable mass of heavy elements, either in the form of a central core, or spread ...
et al. Measuring distance and properties of the milky way's central supermassive black hole with stellar orbits. Astrophys. J. 689, 1044–1062 (2008). 10. O'Dell, C. R., Wen, Z. & Hu, X. Discovery of new objects in the orion nebula on HST images – shocks, compact sources, and...
The messy death of a multiple star system and the resulting planetary nebula as observed by JWST Orsola De Marco Muhammad Akashi Albert A. Zijlstra Nature Astronomy(2022) A plague of magnetic spots among the hot stars of globular clusters ...
or torques from distant stellar companions. The Solar System was not exceptional in this sense. In its inner part, a crowded system of planetary embryos became unstable, leading to a series of mutual impacts that built the terrestrial planets on a timescale of ∼100 My. In its outer part...
Formation and evolution of Earth-like atmospheres involves long-time processes, from H and He accumulation from the stellar nebula in the very early stages of planetary assembly, resulting in H-rich protoatmospheres, to the formation of secondary atmospheres due to ocean magma solidification and stro...
which is that the jet deposits energy inside the bubble. Fat bubbles in planetary nebulae (and similar stellar systems) and in clusters of galaxies, are likely to be formed by wide jets, precessing jets, or other jets whose axis is not constant relative to the medium they expand into. Key...