Results 61 to 70 of about 36,679 (341)

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

On the possible generation of the young massive open clusters Stephenson2 and BDSB122 by Omega Centauri [PDF]

, 2009
A massive objects such as a globular cluster passing through the disk of a galaxy can trigger star formation. We test the hypothesis that the most massive globular cluster in the Galaxy, $\omega$ Centauri, which crossed the disk approximately $24\pm2 ...
Allen, Bekki, Bica, Bica, Bica, Brand, C. Bonatto, Davies, Dias, Dinescu, Drimmel, Dutra, E. Bica, Eisenhauer, Elmegreen, Elmegreen, Figer, Flynn, G. M. Salerno, Ghez, Hanson, Hernquist, I. Rodrigues, Johnston, Larsen, Levy, Lépine, McKee, Mirabel, Miyamoto, Mizutani, Momany, Nakaya, Ortolani, Ortolani, Paczynski, Rees, Russeil, Santos, Soares, Soria, Soria, Stephenson, Struck-Marcell, Struck-Marcell, Trippe, Vande Putte, Vlemmings, Wallin, Whitworth   +49 more
core   +2 more sources

Search for variable stars in globular clusters [PDF]

Symposium - International Astronomical Union, 1986
A program to search poorly studied southern globular clusters for variable stars is being carried out on the 1-m Yale telescope at CTIO. Recently two galactic bulge clusters of moderately high metallicity have been found to contain RR Lyrae variables; a cluster of similar metallicity a little farther from the galactic center apparently has none.
openaire   +2 more sources

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

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 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

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

Rotation and Hα Emission in a Young SMC Cluster: A Spectroscopic View of NGC 330

The Astrophysical Journal
We present an analysis of high-resolution optical spectra recorded for 30 stars of the split extended main-sequence turnoff of the young (∼40 Myr) Small Magellanic Cloud globular cluster NGC 330.
Paul I. Cristofari, Andrea K. Dupree, Antonino P. Milone, Matthew G. Walker, Mario Mateo, Aaron Dotter, John I. Bailey III   +6 more
doaj   +1 more source

On the efficiency of field star capture by star clusters

, 2007
An exciting recent finding regarding scaling relations among globular clusters is the so-called 'blue tilt': clusters of the blue sub-population follow a trend of redder colour with increasing luminosity.
Baranov, Baumgardt, Bedin, Bekki, Bekki, Côté, D'Antona, de Oliveira Filho, Dopita, Fellhauer, Frank, Gnedin, H. Baumgardt, Harris, Jordán, Jordán, Lamers, Mieske, Mints, Morgan, Parmentier, Parmentier, Peng, Piotto, Prantzos, Recchi, Romanowsky, S. Mieske, Smith, Spitler, Strader, Thoul   +31 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