Results 61 to 70 of about 10,737,866 (298)

Advanced Phases of Evolution of Population II Stars [PDF]

Progress of Theoretical Physics, 1965
As the extension of our previous work, calculations have been made of the evolution of a population II star after the formation of a carbon core. We start from a stage when the star has an inactive hydrogen shell-source, a helium-burning shell-source and a partially­ degenerate isothermal carbon core.
Chushiro Hayashi, Reiun H\=oshi, Daiichiro Sugimoto   +2 more
openaire   +1 more source

The role of neutrinos in explosive nucleosynthesis in core collapse supernova models with neutrino transport [PDF]

, 2007
The problem of core collapse supernova explosions is long standing and attempts to understand the mechanism have been ongoing. On one hand, a full understanding of the underlying mechanism is still pending.
Fröhlich, Carla
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

A JWST Project on 47 Tucanae. Overview, Photometry, and Early Spectroscopic Results of M Dwarfs and Observations of Brown Dwarfs

The Astrophysical Journal
James Webb Space Telescope (JWST) observations have been demonstrated to be efficient in detecting multiple stellar populations in globular clusters (GCs) in the low-mass regime of M dwarfs.
A. F. Marino, A. P. Milone, M. V. Legnardi, A. Renzini, E. Dondoglio, Y. Cavecchi, G. Cordoni, A. Dotter, E. P. Lagioia, T. Ziliotto, M. Bernizzoni, E. Bortolan, M. G. Carlos, S. Jang, A. Mohandasan, F. Muratore, M. Tailo   +16 more
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Mapping the Milky Way with Gaia BP/RP Spectra. III. The First Medium-resolution Follow-up Spectroscopy of Metal-poor Stars

The Astronomical Journal
The Gaia BP/RP spectra provide an excellent opportunity to search for extremely metal-poor (EMP; [M/H] ≤ –3.0) stars. In this study, we assess the potential of our Gaia BP/RP-based candidate catalog, vetting newly identified EMP candidates with higher ...
Xianhao Ye, David S. Aguado, Carlos Allende Prieto, Wenbo Wu, Jingkun Zhao, Jonay I. González Hernández, Rafael Rebolo, Gang Zhao, Yuqin Chen, Shuai Liu, Yaqian Wu   +10 more
doaj   +1 more source

XMM-Newton X-ray study of early type stars in the Carina OB1 association [PDF]

, 2007
<p><b>Aims:</b> X-ray properties of the stellar population in the Carina OB1 association are examined with special emphasis on early-type stars.
I. I. Antokhin, J. C. Brown, Rauw, G., G. Rauw, J.-M. Vreux, Antokhin, I. I., Antokhin, I.I., Brown, J.C., van der Hucht, K.A., Rauw, Grégor, K. A. van der Hucht, Vreux, Jean-Marie, Vreux, J.M., van der Hucht, K. A., Brown, J. C.   +14 more
core   +2 more sources

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Discovery of the First Five Carbon-enhanced Metal-poor Stars in the LMC

The Astrophysical Journal Letters
A substantial fraction of metal-poor stars in the local Milky Way halo exhibit large overabundances of carbon. These stars, dubbed carbon-enhanced metal-poor (CEMP) stars, provide crucial constraints on the nature of the early Universe, including the ...
Madeline Lucey, Vedant Chandra, Alexander P. Ji, Andrew R. Casey, David Nidever, Sean Morrison, Robyn E. Sanderson, Slater Oden, José G. Fernández-Trincado, Guilherme Limberg   +9 more
doaj   +1 more source

The discovery of lambda Bootis stars - the Southern Survey II

, 2020
The λ Boo stars are chemically peculiar A-type stars whose abundance anomalies are associated with the accretion of metal-poor material. We searched for λ Boo stars in the Southern hemisphere in a targeted spectroscopic survey of metal-weak and emission ...
Gray, Richard O., Corbally, Christopher J., Murphy, Simon J., Bedding, Timothy R., Kuehn, Charles, Killam, Josiah   +5 more
core   +1 more source