Results 61 to 70 of about 316,672 (296)

Massive binaries and the enrichment of the interstellar medium in globular clusters [PDF]

, 2009
Abundance anomalies observed in globular cluster stars indicate pollution with material processed by hydrogen burning. Two main sources have been suggested: asymptotic giant branch stars and massive stars rotating near the break-up limit.
Bisikalo, Carretta, D'Antona, de Greve, de Mink, de Mink, Decressin, Decressin, Decressin, Figueiredo, Glebbeek, N. Langer, O. R. Pols, Packet, Pasquini, Petrovic, Pols, Prantzos, Prantzos, R. G. Izzard, Refsdal, S. E. de Mink, van Rensbergen   +22 more
core   +1 more source

SPG4 and Dementia: Expanding the Clinical Spectrum

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegia (HSP) is a group of disorders characterized by progressive spasticity and lower limb weakness, with mutations in SPG4/SPAST being the most common cause. Detailed studies and clinical and molecular comparisons across different populations are missing.
Emanuele Panza, Arun Meyyazhagan, Eliseo Picchi, Gustavo Ribas, Ingrid Faber, Ryosuke Miyamoto, Preethi Basavaraju, Paolo Eusebi, Haripriya Kuchi Bhotla, Mario Stasi, Fabrizio Gaudiello, Francesco Patti, Filippo Maria Santorelli, Marcondes Cavalcante França Jr, José Luiz Pedroso, Orlando Graziani Povoas Barsottini, Hélio Afonso Ghizoni Teive, Peter Henry St George‐Hyslop, Toshitaka Kawarai, Antonio Orlacchio   +19 more
wiley   +1 more source

The s-process in the Galactic halo: the fifth signature of spinstars in the early Universe?

, 2013
Very old halo stars were previously found to show at least four different abundance 'anomalies', which models of fast rotating massive stars (spinstars) can successfully account for: rise of N/O and C/O, low 12C/13C and a primary-like evolution of Be and
Cescutti, Gabriele, Chiappini, Cristina, Frischknecht, Urs, Hirschi, Raphael, Meynet, Georges   +4 more
core   +1 more source

The rotation rates of massive stars: the role of binary interaction through tides, mass transfer and mergers [PDF]

, 2012
Rotation is thought to be a major factor in the evolution of massive stars, especially at low metallicity, with consequences for their chemical yields, ionizing flux and final fate.
de Koter, A., de Mink, S. E., Izzard, R. G., Langer, N., Sana, H.   +4 more
core   +2 more sources

RNA Sequencing Resolves Cryptic Pathogenic Variants in Mitochondrial Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Mitochondrial diseases are the most common inherited metabolic disorders, characterized by pronounced clinical and genetic heterogeneity that complicates molecular diagnosis. Although DNA‐based sequencing approaches have become standard in genetic testing, up to half of patients remain without a definitive diagnosis.
Zhimei Liu, Xin Duan, Fatemeh Peymani, Jia Wang, Chengjia Bao, Chaolong Xu, Ying Zou, Zixuan Zhang, Yunxi Zhang, Tongyue Li, Martin Pavlov, Junling Wang, Minhan Song, Tianyu Song, Xiaodi Han, Mingxi Sun, Danmin Shen, Ruoyu Duan, Huafang Jiang, Manting Xu, Holger Prokisch, Fang Fang   +21 more
wiley   +1 more source

Unveiling the Evolutionary State of Three B Supergiant Stars: PU Gem, ϵ CMa, and η CMa

Galaxies, 2023
We aim to combine asteroseismology, spectroscopy, and evolutionary models to establish a comprehensive picture of the evolution of Galactic blue supergiant stars (BSG). To start such an investigation, we selected three BSG candidates for our analysis: HD
Julieta Paz Sánchez Arias, Péter Németh, Elisson Saldanha da Gama de Almeida, Matias Agustin Ruiz Diaz, Michaela Kraus, Maximiliano Haucke   +5 more
doaj   +1 more source

Limiting Accretion onto Massive Stars by Fragmentation-Induced Starvation

, 2010
Massive stars influence their surroundings through radiation, winds, and supernova explosions far out of proportion to their small numbers. However, the physical processes that initiate and govern the birth of massive stars remain poorly understood.
Appenzeller, Appenzeller, Appenzeller, Bacmann, Ballesteros-Paredes, Baraffe, Bate, Beckwith, Beuther, Beuther, Beuther, Bjorkman, Bonanos, Bonnor, Caselli, Chini, Clark, Ebert, Federrath, Fryxell, Galván-Madrid, Gammie, Girichidis, Glover, Goldreich, Goto, Heitsch, Hennebelle, Hennebelle, Jiang, Jijina, Johnstone, Johnstone, Kahn, Kandori, Keto, Keto, Keto, Klessen, Klessen, Klessen, Klessen, Klessen, Klessen, Kratter, Krumholz, Krumholz, Krumholz, Krumholz, Kuiper, Kuiper, Kurtz, Lada, Lada, Larson, Larson, Lucy, Matzner, McKee, Mordecai-Mark Mac Low, Motte, Motte, Oey, Offner, Offner, Padoan, Peters, Peters, Ralf S. Klessen, Robi Banerjee, Selman, Sigalotti, Tan, Testi, Thomas Peters, Truelove, Vázquez-Semadeni, Wise, Yorke   +78 more
core   +1 more source

High-velocity runaway stars from three-body encounters [PDF]

, 2009
We performed numerical simulations of dynamical encounters between hard massive binaries and a very massive star (VMS; formed through runaway mergers of ordinary stars in the dense core of a young massive star cluster), in order to explore the hypothesis
A. Gualandris, Blaauw, Gvaramadze, Heber, Poveda, S. Portegies Zwart, V. V. Gvaramadze, Yungelson   +7 more
core   +1 more source

Sertraline Treatment Can Mimic Niemann‐Pick Type C Biomarker Profile: A Diagnostic Pitfall

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Oxysterols (cholestane‐3β,5α,6β‐triol and 7‐ketocholesterol) and N‐palmitoyl‐O‐phosphocholineserine (PPCS) are sensitive biomarkers for Niemann‐Pick disease type C (NPC) screening. However, false‐positive results occur, with a biomarker profile suggestive of NPC despite the absence of pathogenic variants in genes involved in NPC or ...
Maria Makrygianni, Cecile Pagan, Antony Citterio‐Quentin, Isabelle Rouvet, Giulia Dingeo, Cyril Hanin, Claudine Laurent‐Levinson, Samia Pichard, Bénédicte Héron, Clément Gourguechon, Daniele Mandia, Jerome Guitton, Carole Lacout, Nicolas Schleinitz, Florient Potier, Olivier Flabeau, Elsa Besse‐Pinot, Foudil Lamari, Magali Pettazzoni, Yann Nadjar   +19 more
wiley   +1 more source

Massive Star Formation [PDF]

, 2014
The enormous radiative and mechanical luminosities of massive stars impact a vast range of scales and processes, from the reionization of the universe, to the evolution of galaxies, to the regulation of the interstellar medium, to the formation of star clusters, and even to the formation of planets around stars in such clusters.
J. C. Tan, M. T. Beltrán, P. Caselli, F. Fontani, A. Fuente, M. R. Krumholz, C. F. McKee, A. Stolte   +7 more
openaire   +2 more sources