Results 61 to 70 of about 176,265 (348)

Natures of a clump-origin bulge: a pseudobulge-like but old metal-rich bulge

, 2011
Bulges in spiral galaxies have been supposed to be classified into two types: classical bulges or pseudobulges. Classical bulges are thought to form by galactic merger with bursty star formation, whereas pseudobulges are suggested to form by secular ...
Abadi, Agertz, Allende Prieto, Alves-Brito, Athanassoula, Aumer, Babusiaux, Baron, Bate, Bekki, Bensby, Bensby, Bensby, Bensby, Bensby, Bica, Binny, Bouché, Bournaud, Bournaud, Bournaud, Brook, Brook, Bullock, Burkert, Burstein, Cappellari, Ceverino, Ceverino, Combes, Combes, de Vaucouleurs, Debattista, Drory, Dutton, Dwek, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Erwin, Fall, Ferreras, Fisher, Fisher, Fisher, Fisher, Fisher, Frogel, Fulbright, Genel, Genzel, Gonzalez, Gonzalez, Hill, Hopkins, Howard, Hubber, Immeli, Immeli, Inoue, Ivezić, Jablonka, Johnson, Katz, Kaufmann, Kaufmann, Kent, Kent, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Krumholz, Lecureur, Makino, McWilliam, McWilliam, Meléndez, Monaghan, Naab, Nagashima, Nakasato, Nataf, Navarro, Navarro, Navarro, Noguchi, Noguchi, Noguchi, Ohta, Okamoto, Okamoto, Peletier, Pfenniger, Quinn, Rahimi, Rich, Ruchti, Ryde, Saha, Sahu, Saito, Saitoh, Saitoh, Saitoh, Saitoh, Salpeter, Sawala, Schmidt, Sellwood, Shigeki Inoue, Springel, Takayuki R. Saitoh, Terndrup, Terndrup, Thoul, Thoul, Toomre, van den Bergh, van den Bergh, Wada, Williams, Wyse, Zoccali, Zoccali   +129 more
core   +1 more source

Bulges

, 2000
We model the evolution of the galactic bulge and of the bulges of a selected sample of external spiral galaxies, via the multiphase multizone evolution model. We address a few questions concerning the role of the bulges within galactic evolution schemes and the properties of bulge stellar populations.
Molla, M., Ferrini, F., Gozzi, G.
openaire   +2 more sources

Using In Situ TEM to Understand the Surfaces of Electrocatalysts at Reaction Conditions: Single‐Atoms to Nanoparticles

Advanced Functional Materials, EarlyView.
This review summarizes recent advances in closed‐cell in situ TEM strategies for accurate determination of the activity and stability of single‐atom catalyst systems during operation. Operando conditions causing dynamic changes of SAC systems are highlighted and we explain why ensemble average‐based optical techniques may benefit from the technological
Martin Ek, Soshan Cheong, Julie Cairney, Richard D. Tilley, Ingemar Persson   +4 more
wiley   +1 more source

Analysis of the Influence of Segmented Rollers on Slab Bulge Deformation

Metals, 2019
The bulge deformation of the continuous casting slab must be controlled in order to improve the slab quality. In this study, a coupled three-dimensional thermomechanical model is suggested based on dynamic contact between the slab and the rollers, so as ...
Qin Qin, Ming Li, Jianlin Huang
doaj   +1 more source

Understanding AGB evolution in Galactic bulge stars from high-resolution infrared spectroscopy

, 2015
An analysis of high-resolution near-infrared spectra of a sample of 45 asymptotic giant branch (AGB) stars towards the Galactic bulge is presented. The sample consists of two subsamples, a larger one in the inner and intermediate bulge, and a smaller one
Aringer, B., Blommaert, J. A. D. L., Lebzelter, T., Ryde, N., Schultheis, M., Uttenthaler, S., Wood, P. R.   +6 more
core   +1 more source

Our Milky Way as a Pure-Disk Galaxy -- A Challenge for Galaxy Formation [PDF]

, 2010
Bulges are commonly believed to form in the dynamical violence of galaxy collisions and mergers. Here we model the stellar kinematics of the Bulge Radial Velocity Assay (BRAVA), and find no sign that the Milky Way contains a classical bulge formed by ...
Agertz, Beaulieu, Binney, Clarkson, Combes, Combes, Debattista, Freeman, Freudenreich, Fulbright, Fulbright, Fux, Fux, Howard, Howard, Kormendy, Kormendy, Kormendy, Kormendy, Maihara, Nakasato, Rangwala, Rich, Sellwood, Shen, Stanek, Toomre, Toomre, White, Wyse, Zhao, Zoccali   +31 more
core   +2 more sources

Ultrastable Perovskite Encased in a Helical Cage for Tunable Full‐Color Mirror‐Image Circularly Polarized Luminescence

Advanced Functional Materials, EarlyView.
Develop full‐color colloidal perovskite nanocrystal (PNC) composites using a single organic halide precursor and enhance their stability and emission through zirconium hydrogen phosphate nanosheets (NSs). Achieve high photoluminescence efficiency and dual‐state circularly polarized luminescence (CPL) by embedding stabilized PNCs into a chiral polymer ...
Deblina Das, Youngsin Park, Sourav Mal, Kwangseuk Kyhm, Robert A. Taylor, Atanu Jana, Sangeun Cho   +6 more
wiley   +1 more source

Comparative Analysis of Bulge Deformation between 2D and 3D Finite Element Models

Advances in Mechanical Engineering, 2014
Bulge deformation of the slab is one of the main factors that affect slab quality in continuous casting. This paper describes an investigation into bulge deformation using ABAQUS to model the solidification process.
Qin Qin, Shu Shang, Diping Wu, Yong Zang
doaj   +1 more source

Deep Transfer Learning for Wall Bulge Endpoints Regression for Autonomous Decoration Robots

IEEE Access, 2022
Wall bulge maintenance and repairing is an essential task for autonomous decoration robots. The problem of the wall bulge endpoints regression refers to identifying the position of the wall bulge endpoints in spatial coordinates.
Mahmoud A. Eldosoky, Fanyu Zeng, Xin Jiang, Shuzhi Sam Ge   +3 more
doaj   +1 more source

Alpha element abundances and gradients in the Milky Way bulge from FLAMES-GIRAFFE spectra of 650 K giants

, 2011
We obtained FLAMES-GIRAFFE spectra (R=22,500) at the ESO Very Large Telescope for 650 bulge red giant branch (RGB) stars and performed spectral synthesis to measure Mg, Ca, Ti, and Si abundances.
A. Alves-Brito, A. Gomez, A. Renzini, Alonso, Alves-Brito, Asplund, Athanassoula, B. Barbuy, Babusiaux, Babusiaux, Bagnulo, Bensby, Bensby, Bournaud, Brown, Bureau, C. Babusiaux, Carollo, Clarkson, D. Minniti, Daddi, Debattista, Debattista, Di Matteo, Elmegreen, Fukugita, Fulbright, Fulbright, Förster Schreiber, G. Battaglia, Genzel, Genzel, Gratton, Gustafsson, Hopkins, Howard, Immeli, Kormendy, Lecureur, M. Rejkuba, M. Zoccali, McWilliam, McWilliam, Meléndez, Minniti, Minniti, Minniti, Nakasato, Nataf, O. A. Gonzalez, Patsis, Peletier, Peng, Plez, Ramírez, Rangwala, Rattenbury, Reddy, Renzini, Rich, Rich, Ryde, Ryde, S. Ortolani, Samland, Shen, Sneden, Stetson, Tacconi, Udalski, V. Hill, Weinzirl, Zoccali, Zoccali, Zoccali   +74 more
core   +3 more sources