Results 81 to 90 of about 15,741 (301)

Stellar Ages: A Code to Infer Properties of Stellar Populations

The Astrophysical Journal
We present a novel statistical algorithm, Stellar Ages, which currently infers the age, metallicity, and extinction posterior distributions of stellar populations from their magnitudes.
Joseph J. Guzman, Jeremiah W. Murphy, Andrés F. Barrientos, Benjamin F. Williams, Julianne J. Dalcanton   +4 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Rapid Stellar and Binary Population Synthesis with COMPAS: Methods Paper II

The Astrophysical Journal Supplement Series
The COMPAS ( http://compas.science ) public rapid binary population synthesis code has undergone a number of key improvements since the original COMPAS methods paper was published.
Team COMPAS, Ilya Mandel, Jeff Riley, Adam Boesky, Adam Brček, Ryosuke Hirai, Veome Kapil, Mike Y. M. Lau, JD Merritt, Nicolás Rodríguez-Segovia, Isobel Romero-Shaw, Yuzhe Song, Simon Stevenson, Avi Vajpeyi, L. A. C. van Son, Alejandro Vigna-Gómez, Reinhold Willcox   +16 more
doaj   +1 more source

Stellar Population Properties in the Stellar Streams around SPRC047

The Astrophysical Journal
Abstract We have investigated the properties (e.g., age, metallicity) of the stellar populations of a ringlike tidal stellar stream (or streams) around the edge-on galaxy SPRC047 (z = 0.031) using spectral energy distribution (SED) fits to integrated broadband aperture flux densities.
Seppo Laine, David Martínez-Delgado, Kristi A. Webb, Mohammad Akhlaghi, Roberto Baena-Gallé, Sanjaya Paudel, Michael Stein, Denis Erkal   +7 more
openaire   +5 more sources

The Stellar Populations of the M31 Halo Substructure

The Astrophysical Journal, 2005
5 pages, 3 figurs, ApJL ...
Ferguson, AMN, Johnson, RA, Faria, DC, Irwin, MJ, Ibata, RA, Johnston, KV, Lewis, GF, Tanvir, NR   +7 more
openaire   +5 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Creating Stellar Populations in Computational Models of Stellar Halos

, 2023
Electronic Thesis or DissertationStellar halos are key to understanding galaxy formation. They extend far away from the disk of the galaxy and preserve its formation history.
Talei, Shahram
core  

Multiple populations among very low-mass stars in NGC288 [PDF]

, 2022
openGlobular Clusters (GCs) are among the oldest objects in the Universe. Nearly all GCs host two main stellar groups of stars, a first population (1P) with a chemical composition similar to halo field stars with similar metallicity, and the second ...
BORTOLAN, EMANUELE
core  

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source