Results 131 to 140 of about 29,336 (265)

The stellar origin of 7Li - Do AGB stars contribute a substantial fraction of the local Galactic lithium abundance? [PDF]

open access: yes, 2001
We adopt up-to-date 7Li yields from asymptotic giant branch stars in order to study the temporal evolution of 7Li in the solar neighbourhood in the context of a revised version of the two-infall model for the chemical evolution of our galaxy. We consider
D'Antona, F   +3 more
core   +2 more sources

On the alumina dust production in the winds of O-rich asymptotic giant branch stars [PDF]

open access: yes, 2014
The O-rich Asymptotic Giant Branch (AGB) stars experience strong mass loss with efficient dust condensation and they are major sources of dust in the interstellar medium.
F. Dell’Agli   +5 more
semanticscholar   +1 more source

Spitzer observations of large amplitude variables in the LMC and IC 1613

open access: yesEPJ Web of Conferences, 2017
The 3.6 and 4.5 ìm characteristics of asymptotic giant branch variables in the LMC and IC 1613 are discussed. For C-rich Mira variables there is a very clear periodluminosity-colour relation, where the [3.6] .
Whitelock Patricia A.   +2 more
doaj   +1 more source

A sequence of nitrogen-rich very red giants in the globular cluster NGC 1851

open access: yes, 2014
We present the abundances of N in a sample of 62 stars on the red giant branch (RGB) in the peculiar globular cluster NGC 1851. The values of [N/Fe] ratio were obtained by comparing the flux measured in the observed spectra with that from synthetic ...
Carretta, Eugenio   +3 more
core   +1 more source

On the metallicity dependence of crystalline silicates in oxygen-rich asymptotic giant branch stars and red supergiants [PDF]

open access: bronze, 2012
O. C. Jones   +12 more
openalex   +1 more source

The distance of M33 and the stellar population in its outskirts

open access: yes, 2004
We present deep V,I photometry of two $9.4' x 9.4' field in the outer regions of the M33 galaxy. We obtain a robust detection of the luminosity of the Red Giant Branch Tip (I{TRGB}=20.72 +- 0.08) from which we derived a new estimate of the distance ...
Bellazzini   +54 more
core   +1 more source

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