Results 81 to 90 of about 21,784 (251)
Post-AGB Binaries as Interacting Systems
GalaxiesWe present recent progress in our understanding of the physical interaction mechanisms at work in evolved binaries of low-to-intermediate initial mass, which are surrounded by a stable disc of gas and dust.
Hans Van Winckel
doaj +1 more source
Of Biogeography, Fishes and Kelp: Environmental DNA Metabarcoding the Great African Seaforest
Diversity and Distributions, Volume 31, Issue 6, June 2025.ABSTRACT Aim The biodiversity associated with kelp forest ecosystems is understudied globally, including in South Africa, where kelp forests have expanded their range under climate change. This study used environmental DNA (eDNA) metabarcoding to assess fish biodiversity across an expansive range (~1000 km) of South Africa's kelp forests, contributing ...
Kira‐Lee Courtaillac +2 more
wiley +1 more source
Angewandte Chemie, 2017 The hydrogen-abstraction/acetylene-addition (HACA) mechanism has been central for the last decades in attempting to rationalize the formation of polycyclic aromatic hydrocarbons (PAHs) as detected in carbonaceous meteorites such as in Murchison ...
Tao Yang +8 more
semanticscholar +1 more source
The stellar spectral features of nearby galaxies in the near infrared: tracers of thermally pulsing asymptotic giant branch stars? [PDF]
, 2015 We analyze the stellar absorption features in high signal-to-noise ratio near-infrared (NIR) spectra of the nuclear region of 12 nearby galaxies, mostly spirals.
R. Riffel +14 more
semanticscholar +1 more source
Quantum Batteries: A Materials Science Perspective
Advanced Materials, Volume 37, Issue 17, April 28, 2025.This perspective is focused on advanced materials that might allow the new device class of quantum batteries to be developed. These systems include microcavities with organic molecules, inorganic nanostructures and perovskites, and superconductor circuits.
Andrea Camposeo +5 more
wiley +1 more source
Evolution and nucleosynthesis of helium-rich asymptotic giant branch models [PDF]
, 2015 There is now strong evidence that some stars have been born with He mass fractions as high as $Y \approx 0.40$ (e.g., in $\omega$ Centauri). However, the advanced evolution, chemical yields, and final fates of He-rich stars are largely unexplored.
L. Shingles +5 more
semanticscholar +1 more source
On the Pre‐ and Post‐Positional Semi‐Random Graph Processes
Journal of Graph Theory, Volume 108, Issue 4, Page 819-831, April 2025.ABSTRACT We study the semi‐random graph process, and a variant process recently suggested by Nick Wormald. We show that these two processes are asymptotically equally fast in constructing a semi‐random graph G $G$ that has property P ${\mathscr{P}}$, for the following examples of P ${\mathscr{P}}$: (1) P ${\mathscr{P}}$ is the set of graphs containing ...
Pu Gao, Hidde Koerts
wiley +1 more source
Pulsating stars in the VMC survey
EPJ Web of Conferences, 2017 The VISTA survey of the Magellanic Clouds system (VMC) began observations in 2009 and since then, it has collected multi-epoch data at Ks and in addition multi-band data in Y and J for a wide range of stellar populations across the Magellanic system ...
Cioni Maria-Rosa L. +6 more
doaj +1 more source
The Astrophysical Journal, 2023 In previous work, we identified a population of 38 cool and luminous variable stars in the Magellanic Clouds and examined 11 in detail in order to classify them as either Thorne–Żytkow objects (TŻOs; red supergiants with a neutron star cores) or super ...
Anna J. G. O‘Grady +11 more
doaj +1 more source
Universe, 2022 Presolar grains are microscopic dust grains that formed in the stellar winds or explosions of ancient stars that died before the formation of the solar system.
Nan Liu, Sergio Cristallo, Diego Vescovi
doaj +1 more source