Results 61 to 70 of about 25,535 (312)

The K2-HERMES Survey: age and metallicity of the thick disc [PDF]

, 2019
Asteroseismology is a promising tool to study Galactic structure and evolution because it can probe the ages of stars. Earlier attempts comparing seismic data from the Kepler satellite with predictions from Galaxy models found that the models predicted ...
Buder, Sven, Freeman, Ken, Simpson, Jeffrey D.,, Li, Tanda,, Kallinger, Thomas, Cotar, Klemen, Hon, Marc, Horner, Jonathan,, Cotar, Klemen,, D'ORAZI, VALENTINA, Zwitter, Tomaz, Ting, Yuan-Sen,, Traven, Gregor, Sharma, Sanjib, Chen, Boquan, Bedding, Timothy R., KHANNA, Shourya, Hayden, Michael R.,, Lin, Jane,, Martell, Sarah,, Nataf, David M., Sharma, Sanjib,, Stello, Dennis, Wittenmyer, Rob A., Saadon, Mohd Hafiz Mohd, Esdaile, James,, Lind, Karin,, Lind, Karin, Khanna, Shourya,, Li, Tanda, Esdaile, James, Lewis, Geraint F.,, Zinn, Joel C.,, Asplund, Martin, Freeman, Ken,, De Silva, Gayandhi M.,, D'Orazi, Valentina,, Wittenmyer, Rob A.,, Lewis, Geraint F., Nataf, David M.,, Zwitter, Tomaz,, Kafle, Prajwal R., Hon, Marc,, Kos, Janez,, Kafle, Prajwal R.,, Bland-Hawthorn, Joss, Kallinger, Thomas,, Stello, Dennis,, Nordlander, Thomas,, Wyse, Rosemary F. G.,, Hayden, Michael R., Bland-Hawthorn, Joss,, Simpson, Jeffrey D., Chen, Boquan,, Nordlander, Thomas, Saadon, Mohd Hafiz Mohd,, Zinn, Joel C., Zucker, Daniel B., Huber, Daniel,, De Silva, Gayandhi M., Lin, Jane, Bedding, Timothy R.,, Kos, Janez, Huber, Daniel, Ting, Yuan-Sen, Wright, Duncan,, Buder, Sven,, Traven, Gregor,, Martell, Sarah, Wright, Duncan, Asplund, Martin,, Wyse, Rosemary F. G., Horner, Jonathan, Zucker, Daniel B.,   +73 more
core   +1 more source

Does Metallicity Affect the Protoplanetary Disk Fraction? Answers from the Outer Milky Way

The Astrophysical Journal
The role of metallicity in shaping protoplanetary disk evolution remains poorly comprehended. This study analyzes the disk fraction of 10 young (0.9–2.1 Myr) and low-metallicity (0.34–0.83 Z _⊙ ) clusters located in the outer Milky Way with ...
Sudeshna Patra, Jessy Jose, Neal J. Evans II   +2 more
doaj   +1 more source

The Star Formation History of the Milky Way’s Nuclear Star Cluster

The Astrophysical Journal, 2023
We report the first star formation history study of the Milky Ways nuclear star cluster (NSC), which includes observational constraints from a large sample of stellar metallicity measurements.
Zhuo Chen, Tuan Do, Andrea M. Ghez, Matthew W. Hosek Jr., Anja Feldmeier-Krause, Devin S. Chu, Rory O. Bentley, Jessica R. Lu, Mark R. Morris   +8 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Mapping metallicity variations across nearby galaxy disks

, 2019
The distribution of metals within a galaxy traces the baryon cycle and the buildup of galactic disks, but the detailed gas phase metallicity distribution remains poorly sampled.
McElroy, R., Blanc, G.~A., Leroy, A.~K., Kruijssen, J. M. D., Chevance, M., Schruba, A., Glover, S.~C.~O., Ho, I.-T, Meidt, S., Faesi, C., Pety, J., Sanchez-Blazquez, P., Grasha, K., Congiu, E., Saito, T., van der Wel, Sharon Meidt, Kruijssen, J., Meidt, S. E., Kruijssen, J.~M.~D., Groves, B., Schinnerer, E., Santoro, F., Leroy, A. K., Blanc, G. A., Rosolowsky, E., Kreckel, K., Sandstrom, K., Lang, P., Bigiel, F., Glover, S. C. O., Ho, I., Leroy, A. K., Leroy, A., Emsellem, E., Meidt, Sharon, Blanc, G., Glover, S., Ho, I. -T.   +37 more
core   +1 more source

Resolving gas-phase metallicity in galaxies [PDF]

, 2017
Chapter 2 As part of the Bluedisk survey we analyse the radial gas-phase metallicity profiles of 50 late-type galaxies. We compare the metallicity profiles of a sample of HI-rich galaxies against a control sample of HI-'normal' galaxies.
Carton, David, Carton, D.J.
core   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

Advanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba, Sang‐Hyeok Lee, Christina Gasper, Martina Freund, Sandra Korte‐Kerzel, Ulrich Kerzel   +5 more
wiley   +1 more source

SDSS-IV MaNGA: Spatial Evolution of Gas-phase Metallicity Changes Induced by Galaxy Interactions

The Astrophysical Journal
Gas-phase metallicity in interacting and merging galaxies offers key insights into their star formation processes and evolutionary histories. This study investigates the spatial evolution of gas-phase metallicity (i.e., oxygen abundance, 12 + log(O/H ...
Hsi-An Pan, Lihwai Lin, Sebastián F. Sánchez, Jorge K. Barrera-Ballesteros, Bau-Ching Hsieh   +4 more
doaj   +1 more source

Metal–Metal Bonding

, 2013
This chapter deals with the electronic structure of metal-metal bonds in molecular systems, a diverse topic that now spans almost the entire periodic table. The field is most often associated with strong multiple bonds such as the iconic quadruple bond in [Re2Cl8]2-, and the recently discovered ultra-short Cr-Cr quintuple bonds provide a remarkable ...
openaire   +2 more sources

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source