Results 41 to 50 of about 1,424,303 (245)

Magnetic and non-magnetic AGB mixing for s-processing [PDF]

EPJ Web of Conferences, 2023
I outline a few features of recent models for the formation of the neutron source 13C(α,n)16O in low mass stars (1 ≲ M/M⊙ ≲ 3, LMS ) ascendingfor the second time the Red Giant Branch, generally called Asymptotic Giant Branch, or AGB stars. I also briefly
Busso Maurizio
doaj   +1 more source

A Catalog of GALEX Ultraviolet Emission from Asymptotic Giant Branch Stars [PDF]

, 2017
We have performed a comprehensive study of the UV emission detected from asymptotic giant branch (AGB) stars by the Galaxy Evolution Explorer (GALEX). Of the 468 AGB stars in our sample, 316 were observed by GALEX.
R. Montez, S. Ramstedt, J. Kastner, W. Vlemmings, E. Sanchez   +4 more
semanticscholar   +1 more source

Asymptotic giant branch stars in the Phoenix dwarf galaxy [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
JHKs near-infrared photometry of stars in the Phoenix dwarf galaxy is presented and discussed. Combining these data with the optical photometry of Massey et al. allows a rather clean separation of field stars from Phoenix members. The discovery of a Mira variable (P = 425 days), which is almost certainly a carbon star, leads to an estimate of the ...
Menzies, J. W, Feast, M.W., Whitelock, Patricia A, Olivier, E. A., Matsunaga, G, Da Costa, Gary   +5 more
openaire   +3 more sources

EVOLUTION OF THERMALLY PULSING ASYMPTOTIC GIANT BRANCH STARS. V. CONSTRAINING THE MASS LOSS AND LIFETIMES OF INTERMEDIATE-MASS, LOW-METALLICITY AGB STARS [PDF]

, 2016
Thermally pulsing asymptotic giant branch (TP-AGB) stars are relatively short lived (less than a few Myr), yet their cool effective temperatures, high luminosities, efficient mass loss, and dust production can dramatically affect the chemical enrichment ...
P. Rosenfield, P. Marigo, L. Girardi, J. Dalcanton, A. Bressan, B. Williams, A. Dolphin   +6 more
semanticscholar   +1 more source

Backflow in post-asymptotic giant branch stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
We derive the conditions for a backflow toward the central star(s) of circumstellar material to occur during the post-asymptotic giant branch (AGB) phase. The backflowing material may be accreted by the post-AGB star and/or its companion, if such exists.
openaire   +2 more sources

Evolution of the Outflow in the Water Fountain Source IRAS 18043–2116

The Astrophysical Journal, 2023
We present the spectral and spatial evolution of H _2 O masers associated with the water fountain source IRAS 18043−2116, found in observations with the Nobeyama 45 m Telescope and the Australia Telescope Compact Array. We have found new highest-velocity
L. Uscanga, H. Imai, J. F. Gómez, D. Tafoya, G. Orosz, T. P. McCarthy, Y. Hamae, K. Amada   +7 more
doaj   +1 more source

STARDUST FROM ASYMPTOTIC GIANT BRANCH STARS

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.
Gail, H., Zhukovska, S., Hoppe, P., Trieloff, M.   +3 more
openaire   +2 more sources

Asymptotic giant branch-stars in the GLIMPSE database

Astronomy & Astrophysics
Aims. In the preceding paper (paper I) we showed that the GLIMPSE database contains millions of asymptotic giant branch (AGB) stars. Their nature follows from two properties: the objects have the same color after correction for interstellar extinction ...
Habing H. J., Habing M. A.
doaj   +3 more sources

Planetary Engulfment Prognosis within the ρ CrB System

The Astrophysical Journal, 2023
Exoplanets have been detected around stars at various stages of their lives, ranging from young stars emerging from formation to the latter stages of evolution, including white dwarfs and neutron stars.
Stephen R. Kane
doaj   +1 more source

Asteroseismic measurement of core and envelope rotation rates for 2006 red giant branch stars [PDF]

Astronomy & Astrophysics
Tens of thousands of red giant stars in the Kepler data exhibit solar-like oscillations. The mixed-mode characteristics of their oscillations enable us to study the internal physics from the core to the surface, such as differential rotation.
Gang Li, S. Deheuvels, J. Ballot
semanticscholar   +1 more source