Results 51 to 60 of about 1,482,462 (172)
Rubidium, zirconium, and lithium production in intermediate-mass asymptotic giant branch stars
, 2012 Context. A recent survey of a large sample of Galactic intermediate-mass (>3 M ⊙) asymptotic giant branch (AGB) stars shows that they exhibit large overabundances of rubidium (Rb) up to 100-1000 times solar. In contrast, zirconium (Zr) is not enriched
Lugaro, Maria +9 more
core +1 more source
Nucleosynthesis in helium-enriched asymptotic giant branch models: Implications for heavy element enrichment in ω centauri [PDF]
, 2015 We investigate the effect of helium enrichment on the evolution and nucleosynthesis of low-mass asymptotic giant branch (AGB) stars of 1.7 Mand 2.36 Mwith a metallicity of Z = 0.0006 ([Fe/H] ≈-1.4).
Karakas, Amanda +2 more
core +1 more source
Mira Variables Based on Emission Lines in LAMOST DR9
The Astrophysical JournalWe present a sample of 335 Mira variables, extracted from DR9 of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey. These variables are characterized by the Balmer emissions (H δ , H γ , H β , and H α ) and the metal emissions
Cai-Xia Qu +3 more
doaj +1 more source
Nucleosynthesis in low-mass stars: Shedding light on the cosmic origin of heavy elements [PDF]
EPJ Web of ConferencesLow-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
The 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
Goos–Hänchen effect singularities in transdimensional plasmonic films
Nanophotonics, Volume 14, Issue 25, Page 4513-4530, December 2025.Abstract We identify and classify topologically protected singularities for the reflection coefficient of transdimensional plasmonic systems. Originating from nonlocal electromagnetic response due to vertical electron confinement in the system, such singularities lead to lateral (angular) Goos–Hänchen shifts on the millimeter (milliradian) scale in the
Svend‐Age Biehs, Igor V. Bondarev
wiley +1 more source
Envelope loss of RGB/AGB stars and the formation of hot subdwarfs
EPJ Web of Conferences, 2013 Low mass stars may lose their envelopes in the first giant branch (RGB) or the asymptotic giant branch (AGB) via envelope ejection (i.e. superwind). The envelope loss of AGB stars leads to the formation of carbon-oxygen (CO) white dwarfs (WDs), while the
Chen X., Han Z.
doaj +1 more source
Fish 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
Stellar evolution as seen by mixed modes
EPJ Web of Conferences, 2015 The detection of mixed modes in subgiants and red giants allows us to monitor stellar evolution from the main sequence to the asymptotic giant branch and draw seismic evolutionary tracks.
Mosser Benoît
doaj +1 more source
An Innovative Tool for Measuring Sunlight Propagation Through Different Snowpacks
Earth and Space Science, Volume 12, Issue 8, August 2025.Abstract Sunlight penetration in the snowpack plays a fundamental role in many environmental processes, ranging from local energy balance to snow microbiology and can potentially contribute to climate change. In addition, many photochemical reactions typically occur in the snowpack driven by solar radiation.
Luca Teruzzi +4 more
wiley +1 more source