Results 141 to 150 of about 5,790,906 (290)

The Milky Way’s Early Disk Was Built in Bursts. I. Evidence from Low-angular-momentum, High-α Stars Scattered Out of the Protodisk by Merger Events

The Astronomical Journal
Stars born in the high- α disk can later acquire low angular momentum through dynamical scattering during early merger events. Their age–metallicity distribution thus provides a fossil record of the history of both star formation and dynamical ...
Tiancheng Sun, Maosheng Xiang, Shaolan Bi, Jifeng Liu, Meng Zhang, Yaqian Wu   +5 more
doaj   +1 more source

Macrophage Lipid Homeostasis Drives IVDD via a Senescence‐Dependent Impairment of Efferocytosis

Cell Proliferation, EarlyView.
Intervertebral disc degeneration (IVDD) has been a leading cause of low back pain and lacks disease‐modifying therapies. Although dysregulated disc lipid metabolism is implicated, its impact on the immune microenvironment, particularly macrophages, remains unknown.
Jinyu Wang, Shiyong Ling, Qi Wang, Xuege Qiao, Jianpeng Xing, Siyang Ji, Linhui Han, Chen Yan, Zhishen Niu, Lei Yuan, Baolian Zhao, Kaiqiang Sun, Jiangang Shi   +12 more
wiley   +1 more source

Effect Of The Magellanic Clouds On The Milky Way Disk And Vice Versa [PDF]

, 1998
This paper was harvested from ArXiv identifier is arXiv:9811204v1The satellite-disk interaction provides limits on halo properties in two ways: (1) physical arguments motivate the excitation of observable Galactic disk structure in the presence of a ...
Weinberg, Martin D.
core   +1 more source

Phase Spirals across Galactic Disks. II. Using Large-scale “Macrospirals” in Phase-spiral Amplitude to Derive Perturbation Times

The Astrophysical Journal
Phase-space spirals in the Milky Way disk are a key observable remnant of recent perturbations to the Galaxy. They provide insight into the disk’s potential, dynamical evolution, past interactions, and even substructure.
Kiyan Tavangar, Kathryn V. Johnston, Jason A. S. Hunt, Axel Widmark, Vandana G. Kaushik, Adrian M. Price-Whelan   +5 more
doaj   +1 more source

The Merging History of the Milky Way Disk

, 2000
10 pages, LaTeX, three embedded figures, uses newpasp.sty. To appear in Galaxy Disks and Disk Galaxies, ASP Conference series, eds J.G.
openaire   +2 more sources

4MOST Consortium Survey 3: Milky Way disc and bulge low-resolution survey (4MIDABLE-LR)

, 2019
The mechanisms of the formation and evolution of the Milky Way are encoded in the orbits, chemistry and ages of its stars. With the 4MOST MIlky way Disk And BuLgE Low-Resolution Survey (4MIDABLE-LR) we aim to study kinematic and chemical substructures in
Feltzing, S., Kovalev, M., Rix, H., Monari, G., Fouesneau, M., Ryde, N., Traven, G., Storm, J., Fusillo, N.~G., Tremblay, P., Xiang, M., Khalatyan, A., Casagrande, L., Lemasle, B., Asplund, M., Queiroz, A.~B.~D.~A., Fusillo, N., Kordopatis, G., Zucker, D., Steinmetz, M., Bensby, T., Cescutti, G., de Queiroz, A., Minchev, I., Schwope, A., Matijevic, G., Bergemann, M., McMillan, P., Anders, F., Church, R., Walton, N., Gerhard, O., Arentsen, A., Tremblay, P. -E., Chiappini, C., Grebel, E.~K., Team, 4MIDABLE-Lr, Guiglion, G., Rybizki, J., Queiroz, A., Starkenburg, E., Valentini, M., Team, 4., Rix, H. -W., Andrae, R., Grebel, E., McMillan, P.,, Church, R.,, Bensby, T.,, Lund University., Feltzing, S.,, Traven, G.,, Ryde, N.,   +52 more
core   +1 more source

Ammonia Accumulation Drives Intervertebral Disc Degeneration by Triggering Ammonia‐Induced Cell Death Through Lysosome–Mitochondria Crosstalk

Cell Proliferation, EarlyView.
Mechanical strain disrupts the lysosome‐mitochondria axis via GLS1‐mediated ammonia toxicity, causing NP cell death and ECM breakdown in IVDD. CB839‐mediated GLS1 inhibition effectively rescues cellular homeostasis and alleviates disc degeneration.
Yang Zhang, Yucheng Gao, Shuhang Dong, Shuanggong Liu, Lei Liu, Ziyi Song, Jie Xu, Yijun Rong, Guangxu Song, Yingze Zhang, Dongjin Wu, Zengxin Gao   +11 more
wiley   +1 more source

The rise of the Milky Way Disk through EMP stars

Publications of the Astronomical Society of Australia
Abstract We present a chemo-dynamical study conducted with 2dF $+$ AAOmega of $\sim 6\,000$ Gaia DR3 non-variable candidate metal-poor stars that lie in the direction of the Galactic plane. Our spectral analysis reveals 15 new extremely metal-poor (EMP) stars, with the lowest metallicity at
Benjamin David Caleb Lowe, Thomas Nordlander, Luca Casagrande, Gary S. Da Costa, Michael Bessell, Madeleine McKenzie, Giacomo Cordoni, Norbert Christlieb, Sven Buder   +8 more
openaire   +3 more sources

Phosphorylation of BigH1 regulates its expression pattern and promotes embryonic development

The FEBS Journal, EarlyView.
Phosphorylation is a key regulator of the linker histone variant BigH1 during Drosophila embryogenesis. We reveal that N‐terminal phosphorylation promotes the timely removal of BigH1 from chromatin. In contrast, C‐terminal phosphorylation supports early nuclear divisions and embryonic viability.
Ramóna Pék, Aladár Pettkó‐Szandtner, Anikó Szabó, Balázs Vedelek, Bence György Gombás, Zoltán Villányi, Péter Vilmos, Imre Miklós Boros, László Henn, Gyula Timinszky   +9 more
wiley   +1 more source

Metallicity and α-abundance for 48 Million Stars in Low-extinction Regions in the Milky Way

The Astrophysical Journal
We estimate ([M/H], [ α /M]) for 48 million giants and dwarfs in low-dust extinction regions from the Gaia DR3 XP spectra by using tree-based machine learning models trained on APOGEE DR17 and a metal-poor star sample from Li et al.
Kohei Hattori
doaj   +1 more source