Results 71 to 80 of about 6,137,241 (375)
Exploring Thousands of Nearby Hierarchical Systems with Gaia and Speckle Interferometry
The Astronomical Journal, 2023 There should be about 10,000 stellar hierarchical systems within 100 pc with primary stars more massive than 0.5 M _⊙ , and a similar amount of less-massive hierarchies.
Andrei Tokovinin
doaj +1 more source
Multiplicity of late-type B stars with HgMn peculiarity
, 2010 Observations at various wavelengths of late B-type stars exhibiting strong overabundances of the chemical elements Hg and Mn in their atmospheres indicate that these stars are frequently found in binary and multiple systems.
Abt +61 more
core +1 more source
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
Full Three Dimensional Orbits for Multiple Stars on Close Approaches to the Central Supermassive Black Hole [PDF]
, 2003 PACS 04A25 With the advent of adaptive optics on the W. M. Keck 10m telescope, two significant steps forward have been taken in building the case for a supermassive black hole at the center of the Milky Way and understanding the black hole’s effect on ...
A. Ghez +6 more
semanticscholar +1 more source
occumb: An R package for site occupancy modeling of eDNA metabarcoding data
Population Ecology, EarlyView.This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley +1 more source
Soft No More: Gas Shielding Protects Soft Binaries from Disruption in Gas-rich Environments
The Astrophysical JournalBinaries in dense environments are traditionally classified as soft or hard based on their binding energy relative to the kinetic energy of surrounding stars.
Mor Rozner, Hagai B. Perets
doaj +1 more source
Multiple Stellar Populations at Less Evolved Stages. III. A Possible Helium Spread in NGC 2210
The Astrophysical Journal, 2023 Helium variations are common features of globular clusters (GCs) with multiple stellar populations. All the formation scenarios predict that secondary population stars are enhanced in helium, but the exact helium content depends on the polluters ...
Chengyuan Li +8 more
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Simulating multiple stars in preparation for Gaia
AIP Conference Proceedings, 2011 The scientific preparation of the Gaia mission encompasses both the data reduction algorithms and the generation of simulated data which have to be as realistic as possible.
Frédéric Arenou
semanticscholar +1 more source
Dendritic cells steering antigen and leukocyte traffic in lymph nodes
FEBS Letters, EarlyView.Dendritic cells are key players in the activation of T cells and their commitment to effector function. In this In a Nutshell Review, we will discuss how dendritic cells guide the trafficking of antigen and leukocytes in the lymph node, thus influencing T‐cell activation processes. Dendritic cells (DCs) play a central role in initiating and shaping the
Enrico Dotta +3 more
wiley +1 more source
THE ORIGIN OF BRIGHT X-RAY SOURCES IN MULTIPLE STARS [PDF]
, 2009 Luminous X-ray stars are very often found in visual double or multiple stars. Binaries with periods of a few days possess the highest degree of coronal X-ray activity among regular, non-relativistic stars because of their fast, tidally driven rotation ...
V. Makarov, P. Eggleton
semanticscholar +1 more source