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ASYMPTOTIC GIANT BRANCH VARIABLES

Odessa Astronomical Publications, 2017
Asymptotic Giant Branch variable are the brightest and most distinctive individual stars to be found in the resolved, old and inter mediate age, stellar populations of galaxies in the Local Group and beyond.
P. A. Whitelock
doaj   +2 more sources

Turbulent Dynamo in Asymptotic Giant Branch Stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
Using recent results on the operation of turbulent dynamos, we show that a turbulent dynamo can amplify a large scale magnetic field in the envelopes of asymptotic giant branch (AGB) stars.
Andersen, Balbus, Blackman, Blackman, Brandenburg, Brandenburg, Brandenburg, Chevalier, Essam Zoabi, Fleischer, Garcia-Segura, Garcia-Segura, Garcia-Segura, Habing, Hünsch, Hünsch, Jura, Kemball, Knapp, Matt, Noam Soker, Noyes, Palen, Pascoli, Peres, Saar, Schröder, Soker, Soker, Soker, Soker, Soker, Wood   +32 more
core   +5 more sources

Asymptotic Giant Branch predictions: theoretical uncertainties [PDF]

Astronomy & Astrophysics, 2001
In this paper we investigate the level of agreement between observations and "new" Asymptotic Giant Branch (AGB) models, as produced by updating the physical inputs adopted in previous stellar computations.
Cassisi, S, Castellani, V, Degl'Innocenti, S, Piotto, G, Salaris, M   +4 more
core   +6 more sources

Solar-Like Cycle in Asymptotic Giant Branch Stars [PDF]

The Astrophysical Journal, 2000
I propose that the mechanism behind the formation of concentric semi-periodic shells found in several planetary nebulae (PNs) and proto-PNs, and around one asymptotic giant branch (AGB) star, is a solar-like magnetic activity cycle in the progenitor AGB ...
Andersen A. C., Dorfi E. A., Hunsch M., Icke V., Mauron N., Noam Soker, Reimers C.   +6 more
core   +5 more sources

Magnetic Flares on Asymptotic Giant Branch Stars [PDF]

The Astrophysical Journal, 2002
We investigate the consequences of magnetic flares on the surface of asymptotic giant branch (AGB) and similar stars. In contrast to the solar wind, in the winds of AGB stars the gas cooling time is much shorter than the outflow time.
Bochanski J. J., Burlaga L. F., Dorfi E. A., Hunsch M., Hunsch M., Joel H. Kastner, Loup C., Noam Soker, Reimers C., Schroder K.-P., Woitke P., Woitke P., Woitke P., Zijlstra A. A.   +13 more
core   +6 more sources

Updated stellar yields from Asymptotic Giant Branch models [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
An updated grid of stellar yields for low to intermediate-mass thermally-pulsing Asymptotic Giant Branch (AGB) stars are presented. The models cover a range in metallicity Z = 0.02, 0.008, 0.004, and 0.0001, and masses between 1Msun to 6Msun.
A. I. Karakas, Anders, Angulo, Asplund, Bemmerer, Bessell, Boothroyd, Busso, Campbell, Caughlan, Chafa, Chiosi, Church, Cottrell, Cristallo, Decressin, Denker, El Eid, Fenner, Ferguson, Forestini, Frost, Fynbo, Gallino, Goriely, Goriely, Gratton, Hale, Hale, Helling, Herwig, Herwig, Herwig, Iglesias, Iliadis, Izzard, Izzard, Kaeppeler, Karakas, Karakas, Karakas, Karakas, Karakas, Karakas, Kroupa, Lederer, Lugaro, Magrini, Marigo, Marigo, Marigo, Reimers, Renzini, Sakharuk, Smith, Stancliffe, Stancliffe, Straniero, Straniero, Ugalde, Vassiliadis, Ventura, Ventura, Woodward   +63 more
core   +3 more sources

STARDUST FROM ASYMPTOTIC GIANT BRANCH STARS [PDF]

The Astrophysical Journal, 2009
The formation of dust in the outflows of low- and intermediate-mass stars on the first giant branch and asymptotic giant branch (AGB) is studied and the relative contributions of stars of different initial masses and metallicities to the interstellar medium (ISM) at the instant of solar system formation are derived.
H. P. Gail, Svitlana Zhukovska, P. Höppe, M. Trieloff   +3 more
openalex   +3 more sources

The Galactic distribution of asymptotic giant branch stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2002
We study the Galactic distribution of ~10,000 Asymptotic Giant Branch (AGB) stars selected by IRAS colors and variability index. The distance to each star is estimated by assuming a narrow luminosity function and a model-derived bolometric correction.
Tom Jackson, Željko Ivezić, G. R. Knapp   +2 more
openalex   +3 more sources

The Asymptotic Giant Branch [PDF]

Symposium - International Astronomical Union, 1997
For stars with masses between about 1 and 8 M⊙ the ascent of the Asymptotic Giant Branch (AGB) is the last nuclear powered evolutionary stage. Following this the stars eject a planetary nebula and fade as white dwarfs. Although only short in duration, the AGB is very important due to the nucleosynthesis which occurs.
J. C. Lattanzio, C. A. Frost
openaire   +1 more source

Asymptotic giant branch and super-asymptotic giant branch stars: modelling dust production at solar metallicity [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
We present dust yields for asymptotic giant branch (AGB) and super--asymptotic giant branch (SAGB) stars of solar metallicity. Stars with initial mass $1.5~M_{\odot} \leq M_{\rm ini} \leq 3~M_{\odot}$ reach the carbon star stage during the AGB phase and produce mainly solid carbon and SiC.
F. Dell’Agli, D. A. García–Hernández, Raffaella Schneider, P. Ventura, F. La Franca, Rosa Valiante, E. Marini, M. Di Criscienzo   +7 more
openalex   +5 more sources