Results 221 to 230 of about 26,787 (255)

Instantaneous formation of interstellar minerals and mineral quantum dots. [PDF]

RSC Adv
Roy A, Singh SV, Ramachandran R, Meka JK, Ambresh M, Vijay T, Janardhan P, Jayaram V, Venkatraman V, Das A, Hill H, Bhardwaj A, Mason NJ, Sivaraman B.   +13 more
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Unconventional pathway for the gas-phase formation of 14π-PAHs <i>via</i> self-reaction of the resonantly stabilized radical fulvenallenyl (C₇H₅˙). [PDF]

Chem Sci
Li W, Wu M, Wang C, Huang J, Yang J, Xu M, Zhang F, Yang T, Zhao L.   +8 more
europepmc   +1 more source

Theoretical Studies on the Isomerization Kinetics of Low-Lying Isomers of the SiC₄H₂ System. [PDF]

J Phys Chem A
Job N, Chandrasekaran V, Thimmakondu VS, Thirumoorthy K.   +3 more
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Infrared studies of asymptotic giant branch stars

, 1987
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Beyond the asymptotic giant branch

2008
The evolution of the IR spectra of asymptotic giant branch (AGB) stars has been obtained by time-dependent radiative transfer models. These models are compared with IRAS photometric and spectroscopic observations. Extrapolation of the models to beyond the AGB lead to predictions of the spectra of proto-planetary nebulae.
Sun Kwok, Kevin Volk
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Nucleosynthesis in asymptotic giant branch stars

AIP Conference Proceedings, 2014
The nucleosynthesis in asymptotic giant branch stars (briefly: AGB)is a challenging and fascinating subject in the theory of stellar evolution and important for observations as well. This is because about of half the heavy elements beyond iron are synthesized during thermal pulsation phases of these stars.
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Evolution on the Asymptotic Giant Branch

2012
Stars of low and intermediate mass experience recurrent thermal instabilities during the phase of double (hydrogen and helium) shell burning. During this phase they populate the Asymptotic Giant Branch. The thermal instabilities give rise to drastic, but short-lived structure variations, mixing episodes and specific phases of nucleosynthesis.
Rudolf Kippenhahn, Alfred Weigert, Achim Weiss   +2 more
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Low Mass Asymptotic Giant Branch Evolution

Publications of the Astronomical Society of Australia, 1984
The evolution of asymptotic giant branch (AGB) stars as a function of mass and composition has been studied by Becker and Iben (1979, 1980) for M≥3 M⊙. The results from calculations like these may be used to provide input data for calculations of synthetic AGB star populations, as has been done by Wood and Cahn (1977), Iben (1981) and Renzini and Voli (
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Circumstellar envelopes and Asymptotic Giant Branch stars

The Astronomy and Astrophysics Review, 1996
Red giants are sometimes surrounded by envelopes, the result of the ejection of stellar matter at a large rate ( $\dot M> 10^{-7}M_\odot$ /yr) and at a low velocity (10 km/s). In this review the envelopes are discussed and the relation between stars and envelope: what stars combine with what envelopes?
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