Results 91 to 100 of about 21,784 (251)
Post-Asymptotic Giant Branch Evolution of Low- and Intermediate-Mass Stars. Preliminary Results [PDF]
, 2014 Preliminary results from an ongoing project to compute a grid of post-AGB models is presented. Our preliminary results show that stellar evolution computations that include an updated treatment of the microphysics predict post-AGB timescales that are ...
M. M. Bertolami
semanticscholar +1 more source
Ecological Implications of Germination Temperature on Native and Invasive Rumex Spp.
Plant-Environment Interactions, Volume 6, Issue 2, April 2025.ABSTRACT Rumex alpinus L. (R. alpinus) is a non‐native invasive plant in Czech mountain regions, altering ecosystem structure and function in protected areas. Rumex obtusifolius L. (R. obtusifolius) is a native species and a problematic weed in Czech meadows, while Rumex longifolius DC. (R.
Michaela Jungová +5 more
wiley +1 more source
Observations of Molecular CN toward S-type Asymptotic Giant Branch Stars
The Astronomical JournalS-type asymptotic giant branch (AGB) stars are defined by their carbon-to-oxygen (C/O) ratio approaching unity. However, observations of circumstellar molecules in these stars are limited and challenging.
Yanan Feng +11 more
doaj +1 more source
Spitzer observations of large amplitude variables in the LMC and IC 1613
EPJ 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
On the Origin of Morphological Structures of Planetary Nebulae
Galaxies, 2018 We suggest that most of the mass in planetary nebulae (PNe) resides in the equatorial region and the spherical envelope and the optically bright lobes of PNe are in fact low-density cavities cleared out by fast outflows and photoionized by UV photons ...
Sun Kwok
doaj +1 more source
Blueprint for a Universal Theory of Learning to Read: The Combinatorial Model
Reading Research Quarterly, Volume 60, Issue 2, April/May/June 2025.The Reading Tree. Abstract In this essay, I outline some of the essential ingredients of a universal theory of reading acquisition, one that seeks to highlight commonalities while embracing the global diversity of languages, writing systems, and cultures.
David L. Share
wiley +1 more source
A H I IMAGING SURVEY OF ASYMPTOTIC GIANT BRANCH STARS [PDF]
The 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 +6 more sources
Topographic Drag at the Core‐Mantle Interface
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.Abstract The length of day variations with periods from five to one hundred years are mainly due to core‐mantle interactions. Assuming a differential velocity between the core and the mantle, we investigate the pressure coupling on a core‐mantle boundary (CMB) interface with topography. Including rotation, buoyancy, and magnetic effects in local models
R. Monville, D. Cébron, D. Jault
wiley +1 more source
The Astrophysical JournalDusty stellar point sources are a significant stage in stellar evolution and contribute to the metal enrichment of galaxies. These objects can be classified using photometric and spectroscopic observations using color–magnitude diagrams and infrared ...
Sepideh Ghaziasgar +9 more
doaj +1 more source
EVOLUTION AND NUCLEOSYNTHESIS OF ASYMPTOTIC GIANT BRANCH STELLAR MODELS OF LOW METALLICITY [PDF]
, 2014 We present stellar evolutionary tracks and nucleosynthetic predictions for a grid of stellar models of low- and intermediate-mass asymptotic giant branch (AGB) stars at Z = 0.001 ([Fe/H] =−1.2).
C. Fishlock +3 more
semanticscholar +1 more source