Results 51 to 60 of about 3,911 (275)

The Phase Spiral’s Origin and Evolution: Indications from Its Varying Properties across the Milky Way Disk

The Astrophysical Journal
The phase spiral is a perturbation to the vertical phase-space distribution of stars in the Milky Way disk. We study the phase spiral’s properties and how they vary with spatial position, in order to constrain its origin and evolution, as well as ...
Axel Widmark, Kiyan Tavangar, Joshua Kalish, Kathryn V. Johnston, Jason A. S. Hunt   +4 more
doaj   +1 more source

Rotational Curves of the Milky Way Galaxy and Andromeda Galaxy in Light of Vacuum Polarization around Eicheon

Universe, 2023
Eicheon properties are discussed. It is shown that the eicheon surface allows setting a boundary condition for the vacuum polarization and obtaining a solution describing the dark matter tail in the Milky Way Galaxy. That is, the dark matter in the Milky
Sergey L. Cherkas, Vladimir L. Kalashnikov   +1 more
doaj   +1 more source

The Formation of the Milky Way Disk

, 2000
We present theoretical results on the galactic abundance gradients of several chemical species for the Milky Way disk, obtained using an improved version of the two-infall model of Chiappini, Matteucci, & Gratton (1997) that incorporates a more realistic model of the galactic halo and disk.
Chiappini, Cristina, Matteucci, Francesca, Romano, Donatella   +2 more
openaire   +2 more sources

GATA4‐Driven Transcription of HtrA1 Promotes Cellular Senescence in Ménière's Disease and Age‐Related Audio‐Vestibular Dysfunction

Advanced Science, EarlyView.
This study identifies the HDAC6/GATA4/HtrA1 axis as a critical driver of cellular senescence in the inner ear. GATA4 nuclear translocation, facilitated by HDAC6 downregulation, transcriptionally activates HtrA1, promoting hair cell senescence, SASP, and audio‐vestibular dysfunction in models of Ménière's disease and age‐related audio‐vestibular ...
Na Zhang, Na Li, Yan Wang, Jing Zhang, Jiahui Liu, Lei Chen, Yongdong Song, Yurong Mu, Yuechen Han, Yafeng Lyu, Xiaofei Li, Hanyue Wang, Jing Wang, Yao Lu, Zhaomin Fan, Daogong Zhang, Haibo Wang   +16 more
wiley   +1 more source

An old, metal-rich accreted stellar component in the Milky Way stellar disk

, 2022
We study the possibility that the Milky Ways' cool stellar disk includes mergers with ancient stars. Galaxies are understood to form in a hierarchical manner, where smaller (proto-)galaxies merge into larger ones.
Diane K. Feuillet, Sofia Feltzing, Bensby, Thomas, Sahlholdt, Christian, Feuillet, Diane, Feltzing, Sofia,, Feuillet, Diane K., Feltzing, Sofia, Christian Sahlholdt, Thomas Bensby, Bensby, Thomas,   +10 more
core   +1 more source

Generalized Rotation Curves of the Milky Way from the GAIA DR3 Data Set: Constraints on Mass Models

The Astrophysical Journal
The circular velocity curve traced by stars provides a direct means of investigating the potential and mass distribution of the Milky Way. Recent measurements of the Galaxy’s rotation curve have revealed a significant decrease in velocity for Galactic ...
Francesco Sylos Labini
doaj   +1 more source

THE EVOLUTION OF OXYGEN AND MAGNESIUM IN THE BULGE AND DISK OF THE MILKY WAY [PDF]

The Astronomical Journal, 2008
We show that the Galactic bulge and disk share a similar, strong, decline in [O/Mg] ratio with [Mg/H]. The similarity of the [O/Mg] trend in these two, markedly different, populations suggests a metallicity-dependent modulation of the stellar yields from massive stars, by mass loss from winds, and related to the Wolf-Rayet phenomenon, as proposed by ...
MCWILLIAM A, MATTEUCCI, MARIA FRANCESCA, BALLERO S, RICH R. M, FULBRIGHT J. P, CESCUTTI G.   +5 more
openaire   +3 more sources

Gut Mycobiota‐Associated Tryptophan Catabolites Protect Against Metabolic Dysfunction‐Associated Steatotic Liver Disease

Advanced Science, EarlyView.
ABSTRACT Accumulating evidence suggests that the intestinal microbiota participates in the progression of metabolic dysfunction‐associated steatotic liver disease (MASLD) through microbiota‐host interaction. However, the beneficial role of commensal mycobiota in MASLD progression remains poorly understood.
Shuping Qiao, Shuangya Fan, Juan Xu, Zhen Xu, Chen Peng, Junxing Qu, Ziqian Bing, Shizhen Zhou, Sunan Shen, Guifang Xu, Yue Zhao, Tingting Wang   +11 more
wiley   +1 more source

Evidence for the Third Stellar Population in the Milky Way’s Disk [PDF]

The Astrophysical Journal, 2019
Abstract The Milky Way is a unique laboratory in which stellar properties can be measured and analyzed in detail. In particular, stars in the older populations encode information on the mechanisms that led to the formation of our Galaxy. In this article, we analyze the kinematics, spatial distribution, and chemistry of a large number of ...
Daniela Carollo, Masashi Chiba, Miho Ishigaki, Ken Freeman, Timothy C. Beers, Young Sun Lee, Patricia Tissera, Chiara Battistini, Francesca Primas   +8 more
openaire   +2 more sources

Senolytic Therapy as a Preventive Strategy for Spine Degeneration and Pain

Advanced Science, EarlyView.
Cellular senescence promotes inflammation, tissue degeneration, and chronic back pain. In sparc‐null mice, early oral administration of the senolytic agents o‐vanillin and RG‐7112 reduced senescent cell burden and pro‐inflammatory SASP signaling across intervertebral discs, endplates, vertebral bone, and spinal cord.
Saber Ghazizadeh, Hosni Cherif, Matthew Mannarino, Juiena Sagir, Magali Millecamps, Jean A. Ouellet, Laura S. Stone, Lisbet Haglund   +7 more
wiley   +1 more source