Results 71 to 80 of about 41,389 (308)

THE VERTICAL MOTIONS OF MONO-ABUNDANCE SUB-POPULATIONS IN THE MILKY WAY DISK [PDF]

, 2012
We present the vertical kinematics of stars in the Milky Way's stellar disk inferred from Sloan Digital Sky Survey/Sloan Extension for Galactic Understanding and Exploration (SDSS/SEGUE) G-dwarf data, deriving the vertical velocity dispersion, σz, as a ...
J. Bovy, H. Rix, D. Hogg, T. Beers, Y. S. Lee, Lan Zhang   +5 more
semanticscholar   +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

The evolution of carbon and oxygen in the bulge and disk of the Milky Way [PDF]

Astronomy & Astrophysics, 2009
The evolution of C and O abundances in the Milky Way can impose strong constraints on stellar nucleosynthesis and help understanding the formation and evolution of our Galaxy. The aim is to review the measured C and O abundances in the disk and bulge of the Galaxy and compare them with model predictions.
Andrew McWilliam, Gabriele Cescutti, Cristina Chiappini, Cristina Chiappini, Francesca Matteucci, Francesca Matteucci   +5 more
openaire   +5 more sources

FeDSNP‐Pa Nanoassemblies: A Triple‐Action Therapeutic Strategy Targeting Oxidative Stress, Inflammation, and Pyroptosis for Retinal Ganglion Cell Protection in Glaucoma

Advanced Functional Materials, EarlyView.
FeDSNP‐Pa, a metallized nanoparticle loaded with sodium pyruvate (Pa), exerts triple therapeutic effects by scavenging reactive oxygen species (ROS), suppressing inflammatory responses, and inhibiting pyroptosis signaling pathways. This multifunctional neuroprotective strategy protecting retinal ganglion cells (RGCs) from elevated intraocular pressure ...
Yukun Wu, Xue Li, Tong Wu, Dan Ji, Yugang Bai, Xuezhi Zhou   +5 more
wiley   +1 more source

The Three-phase Evolution of the Milky Way

The Astrophysical Journal
We illustrate the formation and evolution of the Milky Way over cosmic time, utilizing a sample of 10 million red giant stars with full chemodynamical information, including metallicities and α -abundances from low-resolution Gaia XP spectra.
Vedant Chandra, Vadim A. Semenov, Hans-Walter Rix, Charlie Conroy, Ana Bonaca, Rohan P. Naidu, René Andrae, Jiadong Li, Lars Hernquist   +8 more
doaj   +1 more source

At‐Home Early Diagnosis of Mastitis: Calibration‐Free Analysis of Sodium to Potassium Ratio in Breast Milk

Advanced Functional Materials, EarlyView.
MAMAWEL is introduced as the first calibration‐free potentiometric sensor for at‐home mastitis diagnosis. By measuring the sodium‐to‐potassium ratio in breast milk, the device reliably differentiates between healthy and mastitis‐affected samples with less than 10% error.
Ali Soleimani, Farbod Amirghasemi, Melissa Banks, Abdulrahman Al‐Shami, Sina Khazaee Nejad, Abdalrhman Sheer, Clare Dominique Sanchez, Haozheng Ma, Daniel Vargas Ramos, Maral P.S. Mousavi   +9 more
wiley   +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 VERTICAL METALLICITY GRADIENT OF THE MILKY WAY DISK: TRANSITIONS IN [α/Fe] POPULATIONS [PDF]

, 2014
Using G dwarfs from the Sloan Extension for Galactic Understanding and Exploration (SEGUE) survey, we have determined the vertical metallicity gradient in the Milky Way's disk and examined how this gradient varies for different [α/Fe] subsamples.
K. Schlesinger, Jennifer A. Johnson, C. Rockosi, Y. S. Lee, T. Beers, P. Harding, C. Allende Prieto, J. Bird, R. Schoenrich, B. Yanny, D. Schneider, B. Weaver, J. Brinkmann   +12 more
semanticscholar   +1 more source

Biomimetic Ion‐Orchestrated Hierarchical Armored Hydrogel Coating for Robust and Multifunctional Surface Protection

Advanced Functional Materials, EarlyView.
Inspired by the skin‐toughening mechanism of marine sponges, an ion‐orchestrated structural engineering strategy is proposed to regulate the surface microstructure of hydrogel coatings, enabling the in situ formation of a robust armor layer that enhances mechanical integrity and provides multifunctional protection by suppressing fouling attachment and ...
Wenshuai Yang, Ziqian Zhao, Weiyan Zhu, Lu Gong, Yongxiang Sun, Haoyu Yang, Ling Zhang, Wenfei Zhang, Hao Zhang, Fang Zhou, Xuwen Peng, Hongbo Zeng   +11 more
wiley   +1 more source

CHEMICAL CARTOGRAPHY WITH APOGEE: LARGE-SCALE MEAN METALLICITY MAPS OF THE MILKY WAY DISK [PDF]

, 2013
We present Galactic mean metallicity maps derived from the first year of the SDSS-III APOGEE experiment. Mean abundances in different zones of projected Galactocentric radius (0 < R < 15 kpc) at a range of heights above the plane (0 < |z| < 3 kpc), are ...
M. Hayden, J. Holtzman, J. Bovy, S. Majewski, Jennifer A. Johnson, C. Allende Prieto, T. Beers, K. Cunha, P. Frinchaboy, A. G. García Pérez, L. Girardi, F. Hearty, Y. S. Lee, D. Nidever, R. Schiavon, K. Schlesinger, D. Schneider, M. Schultheis, M. Shetrone, V. Smith, G. Zasowski, D. Bizyaev, D. Feuillet, S. Hasselquist, K. Kinemuchi, E. Malanushenko, V. Malanushenko, R. O’Connell, K. Pan, K. Stassun   +29 more
semanticscholar   +1 more source