Results 81 to 90 of about 5,790,906 (290)

Disk Galaxy Evolution: From the Milky Way to High-Redshift Disks [PDF]

Astrophysics and Space Science, 2003
We develop a detailed model of the Milky Way (a ``prototypical'' disk galaxy) and extend it to other disks with the help of some simple scaling relations, obtained in the framework of Cold Dark Matter models. This phenomenological (``hybrid'') approach to the study of disk galaxy evolution allows us to reproduce successfully a large number of observed ...
openaire   +2 more sources

EBHIS Local Volume Galaxy Hi Survey (LVGHIS)

Astronomische Nachrichten, EarlyView.
ABSTRACT Here, we present the “Local Volume Galaxy Hi Survey” (LVGHIS). It is based on the first data release of the Milky Way portion of the Effelsberg Bonn Hi‐Survey (EBHIS). We homogeneously measured the mass and dynamics of the local volume galaxies within the radial velocity limit of |vLSR|≤600kms−1$$ \mid {v}_{\mathrm{LSR}}\mid \le 600\kern0.6em \
V. A. Schulz, J. Kerp, A. C. Schröder, B. Winkel   +3 more
wiley   +1 more source

Asymmetric Mean Metallicity Distribution of the Milky Way’s Disk [PDF]

The Astrophysical Journal Letters, 2019
Abstract I present the mean metallicity distribution of stars in the Milky Way based on photometry from the Sloan Digital Sky Survey. I utilize an empirically calibrated set of stellar isochrones developed in previous work to estimate the metallicities of individual stars to a precision of 0.2 dex for reasonably bright stars across the ...
openaire   +2 more sources

History of star formation and chemical enrichment in the Milky Way disk

, 2002
Based on a physical treatment of the star formation law similar to that given by Efstathiou, we have improved our two-component chemical evolution model for the Milky Way disk. Two gas infall rates are compared, one exponential, one Gaussian. It is shown
Shu, CG, Chang, RX, Hou, JL
core  

Multifunctional hyaluronic acid hydrogel integrating exosome‐encapsulating gelatin microspheres accelerates skeletal muscle regeneration via TGF‐β1 activation and enhanced myogenic cell viability

BMEMat, EarlyView.
Schematic illustration of preparation of injectable H/G@Co@miR‐206 hydrogel for efficient skeletal muscle regeneration in cardiotoxin‐induced skeletal muscle injury SD rat model. Abstract The effective treatment of acute skeletal muscle injuries remains challenging, necessitating therapeutic strategies that concurrently reestablish vascular perfusion ...
Zhengzhe Han, Zongyue Li, Ang Li, Zheng Jiang, Saiyu Shi, Zhipeng Wang, Jishizhan Chen, Yun Qian, Yuanyang Gu, Xianyou Zheng   +9 more
wiley   +1 more source

Divergent Evolution of Radial Metallicity Gradients in the Thin and Thick Disks of the Milky Way

The Astrophysical Journal Letters
Using 200,388 red clump stars from LAMOST and APOGEE, we investigate the radial metallicity gradients of the Galactic disk as a function of vertical height and stellar age. The thin disk displays a pronounced negative radial metallicity gradient near the
Weixiang Sun, Gaohuan Long, Hui Li, Han Shen, Shu Wang, Xiaodian Chen, Biwei Jiang, Xiaowei Liu, Di Li   +8 more
doaj   +1 more source

Metal nanostructure‐coupled label‐free localized surface plasmon resonance biosensors for rapid and sensitive disease diagnosis

BMEMat, EarlyView.
LSPR biosensing enables rapid, sensitive, and low‐sample‐volume detection of biomarkers, with broad applications in diagnosing cancer, infectious, and chronic diseases. Advances in nanostructure design, micro/nanofabrication, and microfluidic integration have expanded the potential of LSPR sensors in biomedical diagnostics.
Zhaoxin Geng, Yunfei Sha, Jiongyan Yang, Hongru Yang, Xiao Liang   +4 more
wiley   +1 more source

Signatures of a Tidally Induced Spiral Arm at the Anticenter of the Milky Way and a Kinematically Extended Anticenter Stream Using DESI Data Release 2

The Astronomical Journal
Using the Dark Energy Spectroscopic Instrument (DESI) Milky Way Survey, we examine the six-dimensional space of the anticenter region of the Milky Way stellar disk (150° < Galactic longitude < 220°) using 61,883 main-sequence turnoff stars.
Mika Lambert, Constance M. Rockosi, Sergey E. Koposov, Ting S. Li, Monica Valluri, Leandro Beraldo e Silva, Songting Li, João A. S. Amarante, Amanda Byström, Gustavo E. Medina, Nathan R. Sandford, Joan Najita, Namitha Kizhuprakkat, Jessica N. Aguilar, Steven Ahlen, Davide Bianchi, David Brooks, Todd Claybaugh, Kyle Dawson, Axel de la Macorra, Peter Doel, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Gaston Gutierrez, Richard Joyce, Anthony Kremin, Claire Lamman, Martin Landriau, Laurent Le Guillou, Marc Manera, Aaron Meisner, Ramon Miquel, John Moustakas, Adam Myers, Seshadri Nadathur, Will Percival, Francisco Prada, Ignasi Pérez-Ràfols, Graziano Rossi, Eusebio Sanchez, David Schlegel, Michael Schubnell, Joseph H. Silber, David Sprayberry, Gregory Tarlé, Benjamin A. Weaver, Rongpu Zhou, Hu Zou   +48 more
doaj   +1 more source

The Milky Way and its gas: Cold fountains and accretion

, 2012
The Milky Way is acquiring gas from infalling high-velocity clouds. The material enters a disk-halo interface that in many places is populated with HI clouds that have been ejected from the disk through processes linked to star formation. The Smith Cloud
Lockman F.J., F.J. Lockman
core   +1 more source

THE EDGE OF THE MILKY WAY STELLAR DISK REVEALED USING CLUMP GIANT STARS AS DISTANCE INDICATORS [PDF]

, 2011
We use the clump giants of the disk as standard candles calibrated from Hipparcos parallaxes in order to map their distribution with two new near-infrared surveys of the Galactic plane: UKIDSS-GPS and VISTA Variables in the Vía Lctea (VVV).
M. Hempel, J. Alonso-García, Alonso-Garcia, J., P. W. Lucas, Saito, R.K., D. Minniti, Lucas, P.W., Hempel, M., Minniti, D., R. K. Saito, Hempel, Maren, Lucas, P. W., Saito, R., Saito, R. K.   +13 more
core   +1 more source