Results 81 to 90 of about 85,801 (378)

A JWST Project on 47 Tucanae: NIRSpec Spectroscopy of Multiple Populations among M Dwarfs

The Astrophysical Journal Letters
We present the first spectroscopic estimates of the chemical abundance of M dwarf stars in a globular cluster (GC), namely 47 Tucanae. By exploiting NIRSpec on board the James Webb Space Telescope, we gathered low-resolution spectra for 28 stars with ...
A. F. Marino, A. P. Milone, A. Renzini, E. Dondoglio, E. Bortolan, M. G. Carlos, G. Cordoni, A. Dotter, S. Jang, E. P. Lagioia, M. V. Legnardi, F. Muratore, A. Mohandasan, M. Tailo, T. Ziliotto   +14 more
doaj   +1 more source

The epithelial barrier theory proposes a comprehensive explanation for the origins of allergic and other chronic noncommunicable diseases

FEBS Letters, EarlyView.
Exposure to common noxious agents (1), including allergens, pollutants, and micro‐nanoplastics, can cause epithelial barrier damage (2) in our body's protective linings. This may trigger an immune response to our microbiome (3). The epithelial barrier theory explains how this process can lead to chronic noncommunicable diseases (4) affecting organs ...
Can Zeyneloglu, Huseyn Babayev, Ismail Ogulur, Sena Ardicli, Yagiz Pat, Duygu Yazici, Bingjie Zhao, Lihong Chang, Xiaoqing Liu, Paolo D'Avino, Manru Li, Ceren Biçer, Fatma Hacer Kurtoğlu Babayev, Raja Dhir, Kari C. Nadeau, Marie‐Charlotte Brüggen, Mubeccel Akdis, Cezmi A. Akdis   +17 more
wiley   +1 more source

The RGB tip of galactic globular clusters and the revision of the axion-electron coupling bound

Astronomy & Astrophysics, 2020
Context. The production of neutrinos by plasma oscillations is the most important energy sink process operating in the degenerate core of low-mass red giant stars.
O. Straniero, C. Pallanca, E. Dalessandro, I. Domínguez, F. Ferraro, M. Giannotti, A. Mirizzi, L. Piersanti   +7 more
semanticscholar   +1 more source

The influence of residual gas expulsion on the evolution of the Galactic globular cluster system and the origin of the Population II halo

, 2007
We present new results on the evolution of the mass function of the globular cluster system of the Milky Way, taking the effect of residual gas expulsion into account.
Bastian, Baumgardt, Baumgardt, Baumgardt, Baumgardt, Baumgardt, Binney, Boily, Boily, Boutloukos, Chaboyer, Chandar, Chiba, D'Antona, Dabringhausen, de Grijs, de la Fuente Marcos, Decressin, Decressin, Engargiola, Evstigneeva, Fall, Fall, Freeman, Freyer, Freyer, G. Parmentier, Gieles, Gieles, Gnedin, Goodwin, Gratton, Gratton, Gratton, H. Baumgardt, Harris, Harris, Harris, Hilker, Hills, Innanen, Jórdan, Kavelaars, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kundu, Kundu, Lada, Lamers, Larsen, Larsen, Mackey, McLaughlin, Meylan, Nantais, Okazaki, Ostriker, P. Kroupa, Parmentier, Parmentier, Parmentier, Piotto, Prantzos, Rosolowsky, Secker, Sneden, Solomon, Spitzer, Tamura, Tremaine, van den Bergh, van den Bergh, VandenBerg, Verschueren, Vesperini, Vesperini, Vesperini, Vesperini, Vesperini, Weidner, Weidner, Whitmore, Whitmore, Whitmore, Zhang, Zinn   +90 more
core   +1 more source

A Genuine Intermediate-Age Globular Cluster in M33 [PDF]

, 2006
We present deep integrated-light spectroscopy of nine M33 globular clusters taken with the Hectospec instrument at the MMT Observatory. Based on our spectroscopy and previous deep color-magnitude diagrams obtained with HST/WFPC2, we present evidence for ...
Ata Sarajedini, Paul Goudfrooij, Rupali Chandar, Thomas H. Puzia, Warner P. J.   +4 more
core   +2 more sources

From omics to AI—mapping the pathogenic pathways in type 2 diabetes

FEBS Letters, EarlyView.
Integrating multi‐omics data with AI‐based modelling (unsupervised and supervised machine learning) identify optimal patient clusters, informing AI‐driven accurate risk stratification. Digital twins simulate individual trajectories in real time, guiding precision medicine by matching patients to targeted therapies.
Siobhán O'Sullivan, Lu Qi, Pierre Zalloua   +2 more
wiley   +1 more source

Star-crossed Clusters: Asteroseismic Ages for Individual Stars Are in Tension with the Ages of Their Host Clusters

The Astrophysical Journal Letters
A meta-analysis of seismic ages determined for individual stars in the well-studied open and globular clusters NGC 6819, NGC 6791, M67, M4, M19, M80, and M9 reveals both high variance across measurements and a possible discrepancy with independent ...
Jamie Tayar, Meridith Joyce
doaj   +1 more source

The Next Generation Virgo Cluster Survey. XXIII. Fundamentals of Nuclear Star Clusters over Seven Decades in Galaxy Mass [PDF]

Astrophysical Journal, 2018
Using deep, high-resolution optical imaging from the Next Generation Virgo Cluster Survey, we study the properties of nuclear star clusters (NSCs) in a sample of nearly 400 quiescent galaxies in the core of Virgo with stellar masses 105 ≲ / ≲ 1012.
R. Sánchez-Janssen, P. Côté, L. Ferrarese, E. Peng, J. Roediger, J. Blakeslee, E. Emsellem, E. Emsellem, T. Puzia, C. Spengler, James E. Taylor, K. Alamo-Martínez, A. Boselli, M. Cantiello, J. Cuillandre, P. Duc, P. Duc, P. Durrell, S. Gwyn, L. Macarthur, A. Lançon, Sungsoon Lim, Chengze Liu, S. Mei, S. Mei, S. Mei, B. Miller, R. Muñoz, J. C. Mihos, S. Paudel, M. Powalka, E. Toloba   +31 more
semanticscholar   +1 more source

Spectroscopy of globular clusters in the low-luminosity spiral galaxy NGC 45

, 2008
CONTEXT: Extragalactic globular clusters have been studied in elliptical galaxies and in a few luminous spiral galaxies, but little is known about globular clusters in low-luminosity spirals.
Alvensleben, Ashman, Barbuy, Barmby, Barmby, Bertin, Bica, Bottinelli, Chandar, Chandar, Chemin, Christian, Christian, Crampton, Côté, Da Costa, Harris, Johnson, Kissler-Patig, Koch, Larsen, M. D. Mora, M. Kissler-Patig, Minniti, Mora, Olsen, Paturel, Perrett, Puche, Puzia, Puzia, Quintana, S. S. Larsen, Sarajedini, Sbordone, Searle, Thomas, Thomas, Tolstoy, Trager, Whiting, Worthey, Worthey, Zinn   +43 more
core   +2 more sources

Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells

FEBS Letters, EarlyView.
Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan, Victoria Scarpelli, Marten Exterkate   +2 more
wiley   +1 more source