progestogen
发表于 2025-4-1 05:12:27
The Radial Velocity Variations in IC 418ate were stored in computer memory and were later added together, in order to improve the signal-to-noise ratio. The resulting intensity tracings reveal more details than had previously been observed (Swings and Struve 1941, Aller and Wilson 1954, Andrillat 1957, Aller and Kaler 1964).
开始没有
发表于 2025-4-1 08:08:49
Data Preparation and Training Part I,eir winds in the resonance line P Cygni profiles in the UV region, in the emission lines of Hα and λ4686 He II in the optical spectrum, and in the free-free emission from the ionized plasma as observed in the IR and radio regions of the spectrum.
观察
发表于 2025-4-1 10:48:51
https://doi.org/10.1007/978-1-4613-0085-4ories. Absorption lines (P-Cygni like) of C II, Al II, Si II and Mg II shifted shortward by about 300 km s. suggest an expanding shell around the star. As this velocity is smaller than the terminal velocity (880 km s.) the circumstellar shell may have been formed as a result of interaction of SW with ISM.
Incorporate
发表于 2025-4-1 17:11:06
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