Results 121 to 130 of about 185,965 (314)

Light-Element Abundance Variations at Low Metallicity: the Globular Cluster NGC 5466

, 2010
We present low-resolution (R~850) spectra for 67 asymptotic giant branch (AGB), horizontal branch and red giant branch (RGB) stars in the low-metallicity globular cluster NGC 5466, taken with the VIRUS-P integral-field spectrograph at the 2.7-m Harlan J.
Bond, Briley, Cohen, Demarque, Denissenkov, Dierckx, Dotter, Eggleton, Fusi Pecci, Graeme H. Smith, Gratton, Harbeck, Hinkle, Howard E. Bond, Joshua Adams, Lee, Lee, Martell, Matthew Shetrone, Michael H. Siegel, Piotto, Plez, Rachel Wilkerson, Ramirez, Sarah L. Martell, Siegel, Siegel, Smith   +27 more
core   +1 more source

Genome‐wide DNA methylation study reveals specific signatures in the affected arterial tissue of giant cell arteritis patients

Arthritis &Rheumatology, Accepted Article.
Objectives Giant cell arteritis (GCA) is a large‐vessel vasculitis, potentially causing complications such as blindness and strokes. This study aims to gain insights into the pathogenesis of GCA by identifying specific DNA methylation signatures in the arterial tissue of patients with this vasculitis.
Gonzalo Borrego‐Yaniz, Ana Márquez, Elkyn Estupiñán‐Moreno, Laura C. Terrón‐Camero, Miguel A. González‐Gay, Santos Castañeda, Giuliana Guggino, David Saadoun, Pietro Lio, Simona Fontana, Martina Bonacini, Alessandro Rossi, Alberto Cavazza, Francesco Muratore, Carlo Salvarani, Nicolo Pipitone, Javier Martin, Stefania Croci, Lourdes Ortiz‐Fernández   +18 more
wiley   +1 more source

Probing the core structure and evolution of red giants using gravity-dominated mixed modes observed with Kepler

, 2012
We report for the first time a parametric fit to the pattern of the \ell = 1 mixed modes in red giants, which is a powerful tool to identify gravity-dominated mixed modes.
Aizenman, B. Mosser, Baudin, Baudin, Beck, Beck, Bedding, Bedding, Borucki, Brassard, Brown, C. Barban, C. J. Burke, Campante, Carrier, Chaplin, Chaplin, Christensen-Dalsgaard, D. Stello, De Ridder, Deheuvels, Deheuvels, di Mauro, Dupret, Dziembowski, Dziembowski, E. Michel, García, Gilliland, Hekker, Hekker, Huber, J. De Ridder, J. P. Marques, Jenkins, Jiang, K. Belkacem, Kallinger, Koch, Ledoux, M. C. Stumpe, M. J. Goupil, Mathur, Mathur, Miglio, Morel, Mosser, Mosser, Mosser, Mosser, Mosser, Mosser, P. G. Beck, Pablo, R. A. García, R. Samadi, S. Hekker, Shibahashi, T. Barclay, T. Kallinger, T. R. Bedding, Tassoul, Verner, White, White, Y. Elsworth   +65 more
core   +2 more sources

Small-amplitude Red Giants Elucidate the Nature of the Tip of the Red Giant Branch as a Standard Candle

The Astrophysical Journal Letters
Abstract The tip of the red giant branch (TRGB) is an important standard candle for determining luminosity distances. Although several 105 small-amplitude red giant stars (SARGs) have been discovered, variability was previously considered irrelevant for the TRGB as a standard candle.
Richard I. Anderson, Nolan W. Koblischke, Laurent Eyer   +2 more
openaire   +3 more sources

Dynamic expression of lamin B1 during adult neurogenesis in the vertebrate brain

Developmental Dynamics, EarlyView.
Abstract Background In mammals, specific brain regions such as the dentate gyrus (DG) of the hippocampus and the subventricular zone (SVZ) of the lateral ventricles harbor adult neural stem/progenitor cells (ANSPCs) that give rise to new neurons and contribute to structural and functional brain plasticity.
Diana Zhilina, Lizbeth A. Bolaños Castro, Juan Sebastian Eguiguren, Sara Zocher, Anne Karasinsky, Dimitri Widmer, Alexandre Espinós, Victor Borrell, Michael Brand, Kyoko Miura, Oliver Zierau, Maximina H. Yun, Tomohisa Toda   +12 more
wiley   +1 more source

Evolved Massive Stars at Low Metallicity. VII. The Lower Mass Limit of the Red Supergiant Population in the Large Magellanic Cloud

The Astrophysical Journal
The precise definition of the lower mass limit of red supergiant stars (RSGs) is an open question in astrophysics and does not attract much attention.
Ming Yang, Bo Zhang, Biwei Jiang, Jian Gao, Yi Ren, Shu Wang, Man I Lam, Hao Tian, Changqing Luo, Bingqiu Chen, Jing Wen   +10 more
doaj   +1 more source

Safety and prognostic value of left ventricular endomyocardial biopsy in dilated cardiomyopathy

European Journal of Heart Failure, EarlyView.
Safety and prognostic value of left ventricular endomyocardial biopsy in dilated cardiomyopathy. CVF, left ventricular collagen volume fraction; DCM, dilated cardiomyopathy; EMB, endomyocardial biopsy; LV, left ventricular. Aims The need to perform endomyocardial biopsy (EMB) in patients with non‐ischaemic dilated cardiomyopathies (DCM) is debated ...
Elham Kayvanpour, Farbod Sedaghat‐Hamedani, Daniel Tian Li, Ebe Amr, Ali Amr, Bernd Lahrmann, Alan Lai, Christoph Reich, Chenyang Wang, Esther Herpel, Derliz Mereles, Lutz Frankenstein, Niels Grabe, Hugo A. Katus, Norbert Frey, Benjamin Meder   +15 more
wiley   +1 more source

Photospheric Helium Abundance in Cool Giants: A Comprehensive Study

The Astrophysical Journal
High-resolution optical spectra of 16 red giants, two early asymptotic giant branch (AGB) stars, and two supergiants, having no/minimal - to super-lithium (Li)-rich abundances, are analyzed to investigate the helium (He)-enhancement. The spectra of eight
B. P. Hema, Gajendra Pandey
doaj   +1 more source

On the Number Ratio of Horizontal Branch Stars to Red Giant Stars in Globular Clusters [PDF]

, 1981
N. Arimoto, M. Simoda
openalex   +1 more source

On the Correlation Between Metallicity and the X-Shaped Morphology of the Milky Way Bulge

, 2014
We demonstrate that failure to properly account for stellar evolution can bias results in determinations of the spatial morphology of Galactic bulge stars, focusing on the question of whether or not the X-shape is more pronounced among the more metal ...
Athanassoula, E., Cassisi, S., Nataf, David M.   +2 more
core   +3 more sources