9/21/2023 0 Comments Dredge up![]() ![]() Sugimoto, D., and Nomoto, K.: 1975, Publ. In some cases there may not be a second dredge-up but dredge-ups following thermal pulses will still be called a third dredge-up. Dredge definition, any of various powerful machines for dredging up or removing earth, as from the bottom of a river, by means of a scoop, a series of buckets, a suction pipe, or the like. Renzini, A., and Voli, M.: 1980, preprint. All dredge-ups following thermal pulses are referred to as third dredge-ups, after the first dredge-up, which occurs on the red-giant branch, and the second dredge up, which occurs during the E-AGB. If your sister wants to annoy you, shell dredge up. Iben, I., and Truran, J.W.: 1978, Astrophys. When you dredge up something, you bring up a topic that someone else would rather not hear or talk about. This process is experimental and the keywords may be updated as the learning algorithm improves. These keywords were added by machine and not by the authors. The present results provide estimates of the core mass at the onset of dredge-up as a function of AGB mass and Z, as required for calculations such as those of Iben & Truran (1978) and Renzini and Voli (1980) which consider enhancement of stellar surface abundances during stellar evolution and subsequent heavy metal enrichment of the interstellar medium via stellar mass loss. A lower mass limit for single carbon stars is found for each Z value by a simple envelope integration technique. to raise with or as if with a dredge they dredged up the corpse from the lake Collins English Dictionary. It was found that reducing the envelope metal abundance in an AGB star of given total mass lowered the luminosity at which carbon stars were formed by the dredge-up of carbon at the helium shell flash. to bring to notice, esp with considerable effort and from an obscure, remote, or unlikely source to dredge up worthless ideas 2. Asymptotic giant branch (AGB) evolution, including helium shell flashing, has been studied in stars of low mass (M ≤ 3 M Ө) with envelope helium abundance Y = 0.3 and metal abundances Z = 0.001, 0.01 and 0.02. ![]()
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