Results 141 to 150 of about 1,255,310 (311)

Globular cluster star classification: Application to M13

open access: yesSerbian Astronomical Journal, 2013
Starting from recent determination of Fe, O, Na abundances on a restricted sample (N = 67) of halo and thick disk stars, a natural and well motivated selection criterion is defined for the classification globular cluster stars. An application is performed to M13 using a sample (N = 113) for which Fe, O, Na abundances have been recently ...
openaire   +3 more sources

Loss of AMBRA1 activates MAPK and angiogenesis signaling pathways in melanoma cells

open access: yesFEBS Open Bio, EarlyView.
Loss of AMBRA1 in melanoma cells activates multiple oncogenic pathways associated with tumor progression. Transcriptomic and protein network analyses revealed that AMBRA1 depletion enhances MAPK/ERK signaling, angiogenesis, TGF‐β/EMT signaling, and Wnt/axon guidance pathways.
Milad Ibrahim   +4 more
wiley   +1 more source

Globular cluster-massive black hole interactions in galactic centers [PDF]

open access: yes, 2016
Many, if not all, galaxies host massive compact objects at their centers. They are present as singularities (super massive black holes) or high density star clusters (nuclear tar clusters).
Capuzzo Dolcetta R.
core  

Pregalactic globular cluster formation induced by primordial black holes

open access: yesDiscover Space
Globular clusters are among the oldest known objects in the Universe, yet their formation process remains insufficiently understood. Early work hypothesised that globular clusters formed before galaxies themselves.
Jeremy Mould, Jarrod Hurley
doaj   +1 more source

MagmaFlow: A desktop platform for artificial intelligence‐driven expression analysis

open access: yesFEBS Open Bio, EarlyView.
MagmaFlow is a free, no‐code platform for gene expression analysis. It generates interactive volcano plots, links genes to literature, pathways, and diseases, prioritizes candidates using millions of publications, identifies affected biological processes, builds network diagrams, and exports publication‐ready figures and reports for macOS and Windows ...
Carlos E. Buss   +7 more
wiley   +1 more source

Helium-rich stars in globular clusters: constraints for self-enrichment by massive stars [PDF]

open access: yes, 2017
Globular clusters exhibit peculiar chemical patterns where Fe and heavy elements are constant inside a given cluster while light elements (Li to Al) show strong star-to-star variations.
Meynet, G.   +2 more
core  

JWST NIRCam Observations of the Globular Cluster Population of RXJ 2129.7+0005

open access: yesThe Astrophysical Journal
We present an analysis of the globular cluster (GC) population in the galaxy cluster RXJ 2129.7+0005 ( z = 0.234) based on JWST NIRCam imaging in three filters: F115W, F150W, and F200W.
Kaitlyn E. Keatley, William E. Harris
doaj   +1 more source

Dose‐dependent hepatotoxicity of hydrogen peroxide in HepG2 cells and its modulation by CYP450 induction

open access: yesFEBS Open Bio, EarlyView.
NMR metabolomics revealed concentration‐dependent metabolic perturbations in HepG2 cells exposed to H2O2. Rifampicin pretreatment enhanced metabolic competence, attenuated toxin‐induced alterations and produced metabolite profiles more consistent with human liver physiology, supporting the use of CYP450‐induced HepG2 models for improved in vitro ...
Maren Jinks   +4 more
wiley   +1 more source

Ecology of Open Star Clusters

open access: yes, 2012
poster"Ecology of star clusters" examines the interactions of stars, and what can be gleaned from those interactions about the evolution and ultimate fate of star clusters large and small.
Lehman, Fred   +2 more
core  

Hot Stars in Globular Clusters

open access: yes, 1998
26 pages, 11 Postscript figures, to appear in Reviews in Modern Astronomy (Astronomische Gesellschaft)
openaire   +2 more sources

Home - About - Disclaimer - Privacy