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17 de jun. de 2024 · Star - Formation, Evolution, Lifecycle: Throughout the Milky Way Galaxy (and even near the Sun itself), astronomers have discovered stars that are well evolved or even approaching extinction, or both, as well as occasional stars that must be very young or still in the process of formation.
10 de jun. de 2024 · June 10 - June 13. 33rd CALCON Technical Meeting | Booth #2 | June 10–13, 2024 | Space Dynamics Laboratory. You Need Better Data, Not More Data. Calibration can dramatically improve the quality of your data, making analysis easier and results more reliable.
Hace 21 horas · Biological speciation is the beating heart of Darwinian evolution, and Darwin’s finches and peppered moths are exciting, oft-publicized cases of natural selection in action. But these examples may give the false impression that evolution is a straightforward and directional process. We still have much to learn about the molecular mechanisms ...
14 de jun. de 2024 · Based on the model, the methods of cointegration tests, Granger causality, impulse response function, and variance decomposition were respectively employed to reveal and validate the mechanisms of spectral feature evolution caused by browning reactions.
24 de jun. de 2024 · Despite some diversity in the recurrence and amplitude of eruptions, their striking regularity has motivated theorists to associate QPEs with orbital systems. Among the known QPE sources, eRO-QPE2 has shown the most regular flare timing and luminosity since its discovery.
17 de jun. de 2024 · Line spectrum. Spectral lines are produced by transitions of electrons within atoms or ions. As the electrons move closer to or farther from the nucleus of an atom (or of an ion ), energy in the form of light (or other radiation) is emitted or absorbed.
29 de jun. de 2024 · The early spectral (and photometric, Yan et al., 2024) evolution of SN2024ggi indicates that we caught the SN during the shock breakout. In particular, the four spectra taken between 13.9 hr and 16.2 hr showed spectra with lines of a low ionization level.
