Results 111 to 120 of about 334,935 (372)

Mean proper motions, space orbits and velocity dispersion profiles of Galactic globular clusters derived from Gaia DR2 data [PDF]

, 2018
We have derived the mean proper motions and space velocities of 154 Galactic globular clusters and the velocity dispersion profiles of 141 globular clusters based on a combination of Gaia DR2 proper motions with ground-based line-of-sight velocities.
arxiv   +1 more source

The Extended Main-Sequence Turn-off Clusters of the Large Magellanic Cloud - Missing links in Globular Cluster Evolution [PDF]

, 2011
Recent observations of intermediate age (1 - 3 Gyr) massive star clusters in the Large Magellanic Cloud (LMC) have revealed that the majority possess bifurcated or extended main-sequence turn-off (EMSTO) morphologies.
A. Dougal Mackey, Allison, Bastian, Bedin, Bekki, Bekki, Bertelli, Bhatia, Chandar, Cohen, Conroy, Da Costa, de Grijs, Dieball, Dupree, Efremov, Elmegreen, Elson, Fall, Fall, Gary S. Da Costa, Gennaro, Girardi, Girardi, Glatt, Goudfrooij, Hunter, Johnson, Keller, Keller, Mackey, McLaughlin, McMillan, Mucciarelli, Mucciarelli, Norris, Olsen, Sirianni, Stefan C. Keller, Testa, van der Marel, Whitmore, Zhang   +42 more
core   +2 more sources

Rotation of Horizontal‐Branch Stars in Globular Clusters [PDF]

The Astrophysical Journal, 2000
The rotation of horizontal branch stars places important constraints on angular momentum evolution in evolved stars and therefore rotational mixing on the giant branch. Prompted by new observations of rotation rates of horizontal branch stars, we calculate simple models for the angular momentum evolution of a globular cluster giant star from the base ...
Sills, Alison, Pinsonneault, M. H.
openaire   +5 more sources

A universal route for the formation of massive star clusters in giant molecular clouds [PDF]

Nature Astronomy, 2018
Young massive clusters (M ≥ 104Mʘ) are proposed modern-day analogues of the globular clusters that were products of extreme star formation in the early Universe1–4.
Corey S. Howard, R. Pudritz, W. Harris
semanticscholar   +1 more source

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

FEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

oMEGACat. III. Multiband Photometry and Metallicities Reveal Spatially Well-mixed Populations within ω Centauri’s Half-light Radius

The Astrophysical Journal
ω Centauri, the most massive globular cluster in the Milky Way, has long been suspected to be the stripped nucleus of a dwarf galaxy that fell into the Galaxy a long time ago.
M. S. Nitschai, N. Neumayer, M. Häberle, C. Clontz, A. C. Seth, A. P. Milone, M. Alfaro-Cuello, A. Bellini, S. Dreizler, A. Feldmeier-Krause, T.-O. Husser, N. Kacharov, S. Kamann, M. Latour, M. Libralato, G. van de Ven, K. Voggel, Z. Wang   +17 more
doaj   +1 more source

The Formation of Globular Cluster Systems in Massive Elliptical Galaxies: Globular Cluster Multimodality from Radial Variation of Stellar Populations [PDF]

Astrophys.J.665:295-305,2007, 2007
The most massive elliptical galaxies show a prominent multi-modality in their globular cluster system color distributions. Understanding the mechanisms which lead to multiple globular cluster sub-populations is essential for a complete picture of massive galaxy formation.
arxiv   +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

Formation histories of stars, clusters, and globular clusters in the E-MOSAICS simulations [PDF]

Monthly notices of the Royal Astronomical Society, 2019
The formation histories of globular clusters (GCs) are a key diagnostic for understanding their relation to the evolution of the Universe through cosmic time.
M. Reina-Campos, J. Kruijssen, J. Pfeffer, N. Bastian, R. Crain   +4 more
semanticscholar   +1 more source

Social context prevents heat hormetic effects against mutagens during fish development

FEBS Letters, EarlyView.
This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere, Claudio Silva De Freitas, Adam Bates, Kenneth B. Storey, Pedro Beltran‐Alvarez, Katharina C. Wollenberg Valero   +5 more
wiley   +1 more source