Results 181 to 190 of about 170,516 (335)

ABYSS. II. Identification of Young Stars in Optical SDSS Spectra and Their Properties

The Astronomical Journal
We developed a tool that measures equivalent widths of various lines in low-resolution optical spectra, and it was applied to stellar spectra obtained as part of SDSS-V and LAMOST programs.
Serat Saad, Kaitlyn Lane, Marina Kounkel, Keivan G. Stassun, Ricardo López-Valdivia, Jinyoung Serena Kim, Karla Peña Ramírez, Guy S. Stringfellow, Carlos G. Román-Zúñiga, Jesús Hernández, Scott J. Wolk, Lynne A. Hillenbrand   +11 more
doaj   +1 more source

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

Advanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach, Oliver Schenk, Valérian Iss, Ali Rajaei, Jiali Zhang, Felix Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

An Analysis of the Complex and Compact Outflow Cavity Carved by HOPS 361-A in NGC 2071 IR

The Astrophysical Journal
We present a combined Stratospheric Observatory for Infrared Astronomy (SOFIA) and two-epoch Hubble Space Telescope (HST) study of the region NGC 2071 IR containing the outflow from the protostar HOPS 361-A (NGC 2071 IRS 1).
Nicole Karnath, Adam E. Rubinstein, Samuel Federman, Alice C. Quillen, Joel D. Green, Edward T. Chambers, Dan M. Watson, S. Thomas Megeath, Simon Coudé, Matthias Justen, Mayank Narang, Steve Goldman, John J. Tobin   +12 more
doaj   +1 more source

A Brγ Probe of Disk Accretion in T Tauri Stars and Embedded Young Stellar Objects [PDF]

, 1998
James Muzerolle, Lee Hartmann, Nuria Calvet   +2 more
openalex   +1 more source

Residual Stress States in Microstructurally Graded PBF–LB/M Austenitic Steel Components

Advanced Engineering Materials, EarlyView.
This study examines microstructurally graded 316L rectangular tube profiles fabricated via PBF–LB/M using a dual‐laser system. A 1 kW top‐hat and a 400 W Gaussian laser create distinct grain sizes and crystallographic texture. Mechanical properties are linked to microstructural evolution driven by processing conditions.
Nico Möller, Florian Loebich, Thomas Wegener, Julia Richter, Jens Gibmeier, Thomas Niendorf   +5 more
wiley   +1 more source

Cosmic-Ray Propagation in Young Embedded Clusters

The Astrophysical Journal
This paper constructs a quantitative description for the geometrical properties of young stellar clusters using a Delaunay mesh. This approach defines the paths that connect cluster members and can be used to characterize the distribution of path lengths
Marco Fatuzzo, Fred C. Adams
doaj   +1 more source

Iron Fluorescent Line Emission from Young Stellar Objects in the Orion Nebula [PDF]

, 2005
Masahiro Tsujimoto, Eric D. Feigelson, N. Grosso, G. Micela, Y. Tsuboi, F. Favata, Hsien Shang, Joel H. Kastner   +7 more
openalex   +1 more source

On the Deformation Behavior of Metastable CrMnNi Steels Processed by Directed Energy Deposition in Different Temperature Regimes

Advanced Engineering Materials, EarlyView.
In the present study, metastable CrMnNi steels with varying chemical compositions and a concomitantly altered stacking fault energy are processed via directed energy deposition and afterwards tested via tensile tests at different temperatures. The present study shows the influence of the manufacturing process on the elemental deformation mechanisms for
Julia Richter, Thomas Wegener, Florian Stredak, Gert Bartzsch, Steffen Scherbring, Javad Mola, Olena Volkova, Stefan Böhm, Thomas Niendorf   +8 more
wiley   +1 more source

Identification of Young Stellar Object candidates in the Gaia DR2 x AllWISE catalogue with machine learning methods [PDF]

, 2019
G. Marton, P. Ábrahám, E. Szegedi-Elek, J. Varga, M. Kun, Á. Kóspál, E. Varga-Verebélyi, S. T. Hodgkin, L. Szabados, Robert E. Beck, Csaba Kiss   +10 more
openalex   +1 more source

Laboratory‐Scale Procedure for Evaluating the Flux Efficiency on Melt Cleanliness and Tensile Properties of Recycled Aluminum Alloys

Advanced Engineering Materials, EarlyView.
A laboratory‐scale procedure is developed to evaluate the efficiency of melt‐cleaning and drossing fluxes during aluminium alloy recycling, studying their effects on melt cleanliness and tensile properties of secondary foundry alloys. This work provides a practical tool for foundries and aluminium refiners to assess the efficiency of salt fluxes in ...
Veronica Milani, Giulio Timelli
wiley   +1 more source