Results 91 to 100 of about 9,884 (228)

Tracing the Evolution of SMBHs and Stellar Objects in Galaxy Mergers: A Multi-mass Direct N-body Model

open access: yesThe Astrophysical Journal, 2023
By using direct N -body numerical simulations, we model the dynamical coevolution of two supermassive black holes (SMBHs) and the surrounding stars in merging galaxies. In order to investigate how different stellar components evolve during the merger, we
Shuo Li   +5 more
doaj   +1 more source

Mass Losing Asymptotic Giant Branch Stars And Supergiants

open access: yes, 2016
This paper presents a summary of four invited and twelve contributed presentations on asymptotic giant branch stars and red supergiants, given over the course of two afternoon splinter sessions at the 19th Cool Stars Workshop. It highlights both recent observations and recent theory, with some emphasis on high spatial resolution, over a wide range of ...
Whitelock, Patricia A.   +4 more
openaire   +2 more sources

First giant branch and asymptotic giant branch stars in nearby aggregates

open access: yesThe Astronomical Journal, 1991
The properties of the brightest red stars in several aggregates in the Galaxy are compared with theoretical models. 22 asymptotic giant branch (AGB) stars are identified, four of which are in the thermally pulsing AGB (TPAGB) phase and four of which are TPAGB carbon stars.
Olin J. Eggen, Icko, Jr. Iben
openaire   +1 more source

s process in low-mass asymptotic giant branch stars [PDF]

open access: yesNuclear Physics A, 2006
pages ...
Straniero, O.   +2 more
openaire   +2 more sources

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

open access: yes, 2014
The evolution and lifetimes of thermally pulsating asymptotic giant branch (TP-AGB) stars suffer from significant uncertainties. In this work, we analyze the numbers and luminosity functions of TP-AGB stars in six quiescent, low metallicity ([Fe/H] ≲ −0 ...
P. Rosenfield   +9 more
semanticscholar   +1 more source

Imputation of Fisheries Reference Points for Endangered Data‐Poor Fishes, With Application to Rhino Rays

open access: yesFish and Fisheries, Volume 26, Issue 5, Page 848-865, September 2025.
ABSTRACT For data‐limited fish species, sustainable management frequently relies on biological metrics that are derived from life‐history trait data, as opposed to high‐resolution time series of catch and abundance. These biological metrics are used to assess a species' recovery potential at low population densities, as well as their extinction risk ...
Catharine Horswill   +7 more
wiley   +1 more source

Lithium abundance and stellar rotation in the Galactic halo and thick disc

open access: yesAstronomy & Astrophysics
The stellar evolution of lithium-rich (Li-rich) giant stars at very low metallicities remains largely unexplored to date. Using mainly two recent large LAMOST catalogues of field, low-mass giant stars (both Li-rich and Li-poor) with metallicities ranging
de la Reza R.   +3 more
doaj   +1 more source

Nucleosynthesis in low-mass stars: Shedding light on the cosmic origin of heavy elements [PDF]

open access: yesEPJ Web of Conferences
Low-mass, low-metallicity stars while evolving through the asymptotic giant branch (AGB) phase undergo significant nucleosynthesis producing the majority of slow (s-) and intermedite (i-) neutron capture elements.
Goswami Aruna
doaj   +1 more source

Spectral evolution of asymptotic giant branch stars

open access: yesThe Astrophysical Journal, 1988
L'evolution des etoiles de masse intermediaire de la branche geante asymptotique est simulee numeriquement a partir d'un modele de perte de masse simple. Les resultats sont compares aux donnees photometriques et spectrometriques enregistrees par le satellite IRAS dans le domaine ...
Kevin Volk, Sun Kwok
openaire   +1 more source

A H I IMAGING SURVEY OF ASYMPTOTIC GIANT BRANCH STARS [PDF]

open access: yesThe Astronomical Journal, 2013
Accepted to AJ. A version with full resolution figures is available at http://www.haystack.mit.edu/hay/staff/lmatthew/matthews_HI_survey ...
Matthews, L.   +3 more
openaire   +4 more sources

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