oxidant
发表于 2025-3-23 11:08:03
Astronomy and Astrophysics Libraryhttp://image.papertrans.cn/c/image/224335.jpg
思想灵活
发表于 2025-3-23 15:18:41
Problem Solving Questions in Toxicology:nts, such as hydrogen (H), deuterium (D), helium (He), and a very tiny fraction of lithium (.Li) were formed, while all the other elements from carbon to uranium and beyond were formed inside the stars. The chemical elements and their isotopes are characterized by their mass number (.), namely, the
instill
发表于 2025-3-23 18:50:59
https://doi.org/10.1007/978-3-030-50409-0history or stellar birthrate function, the stellar yields (nucleosynthesis), and gas flows will be discussed. The most common recipes adopted in the literature for these ingredients will be summarized together with the related uncertainties. Relative to the stellar yields, we will present the nucleo
低三下四之人
发表于 2025-3-24 01:00:01
Problem Solving Questions in Toxicology:r the . (IRA), which states that all stars less massive than or equal to 1.. live forever, while all stars more massive than 1.. die instantaneously. This approximation is correct for stars below 1.. but it is incorrect for larger masses with lifetimes not negligible relative to the age of the Unive
pacifist
发表于 2025-3-24 03:46:02
Problem Solving Questions in Toxicology: are discussed, such as the star formation rate, the initial mass function, the SN rates, the infall, radial flow, and wind rates. The importance of taking into account the stellar lifetimes together with a critical discussion on the errors on such lifetimes are highlighted. Particular importance is
印第安人
发表于 2025-3-24 09:53:12
Problem Solving Questions in Toxicology:e bulge, the thick, and the thin disk will be described. Comparison between model results and observations, concerning abundance patterns in the stars of the different Galactic components and radial gradients along the thin disk, can suggest to us the main mechanisms for the formation of our Galaxy.
恫吓
发表于 2025-3-24 11:16:13
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OTTER
发表于 2025-3-24 18:09:52
A Historical Glimpse and Stalwartsnd rather simple objects with low metallicity and large gas content, suggesting that they are either young objects or have undergone discontinuous star formation activity (bursts) or a continuous but not efficient star formation. They are very interesting objects for studying galaxy evolution: in fa
光明正大
发表于 2025-3-24 22:14:52
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irradicable
发表于 2025-3-25 02:57:56
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