Results 41 to 50 of about 43,226 (214)

Internal Secular Evolution in Disk Galaxies: The Growth of Pseudobulges

, 2007
Observational and theoretical evidence that internal, slow ("secular") evolution reshapes galaxy disks is reviewed in Kormendy & Kennicutt (2004, ARAA, 42, 603). This update has three aims.
Athanassoula, Athanassoula, Binney, Buta, Buta, Combes, Drory, Duus, John Kormendy, Kormendy, Kormendy, Kormendy, Peletier, Sellwood, Sérsic   +14 more
core   +1 more source

Ages and abundances in large-scale stellar disks of nearby S0 galaxies [PDF]

, 2012
By undertaking deep long-slit spectroscopy with the focal reducer SCORPIO of the Russian 6m telescope, we studied stellar population properties and their variation with radius in 15 nearby S0 galaxies sampling a wide range of luminosities and ...
Koposov, S. E., Proshina, I. S., Shulga, A. P., Sil'chenko, O. K.   +3 more
core   +2 more sources

Versatile Gasochromic Hydrogen Detection via Supraparticle‐Based Applied Composite Materials

Advanced Optical Materials, EarlyView.
Silica‐platinum‐resazurin supraparticles are embedded into PMMA to form suprabeads and thin films. The thereby obtained indicators change color from purple to pink to colorless on hydrogen exposure. The indicator systems are tested under various environmental conditions, and their performance is related to their microscopically visualized structure ...
Sarah Wenderoth, Maximilian Oppmann, Daniel Dzoic, Thomas Zimmermann, Mickaël Lejoyeux, Andreas Graff, Benedikt Schug, Susanne Wintzheimer   +7 more
wiley   +1 more source

On the Significance of the Thick Disks of Disk Galaxies

The Astrophysical Journal Supplement Series
Thick disks are a prevalent feature observed in numerous disk galaxies, including our own Milky Way. Their significance has been reported to vary widely, ranging from a few percent to 100% of the disk mass, depending on the galaxy and the measurement ...
Sukyoung K. Yi, J. K. Jang, Julien Devriendt, Yohan Dubois, San Han, Taysun Kimm, Katarina Kraljic, Minjung Park, Sebastien Peirani, Christophe Pichon, Jinsu Rhee   +10 more
doaj   +1 more source

Interpreting the Evolution of the Size - Luminosity Relation for Disk Galaxies from Redshift 1 to the Present

, 2010
A sample of very high resolution cosmological disk galaxy simulations is used to investigate the evolution of galaxy disk sizes back to redshift 1 within the Lambda CDM cosmology.
A. M. Brooks, A. R. Solomon, Abadi, Azzollini, Barden, Bell, Benson, Blanton, Boselli, Bouche, Bouwens, Brook, Brook, Brooks, Brooks, Brooks, Bullock, C. B. A. Brook, Ceverino, Chen, Conroy, Courteau, Cowie, D'Onghia, Daddi, Damen, Damen, de Blok, de Jong, de Jong, Driver, Dutton, Efstathiou, Eke, Elmegreen, Elmegreen, Erb, F. Governato, Fall, Ferguson, Förster Schreiber, Gardner, Gavazzi, Geha, Giavalisco, Gnedin, Governato, Governato, Hopkins, Hultman, J. McCleary, J. Wadsley, Kanwar, Katz, Komatsu, Komatsu, Kroupa, L. A. MacArthur, Labbé, Leitherer, Lilly, MacArthur, MacArthur, Mayer, Melbourne, Moster, Naab, Navarro, Navarro, Noeske, Noeske, Oh, P. Jonsson, Pannella, Peng, Piontek, Pizagno, Ravindranath, Rix, Robertson, Robertson, Saitoh, Sales, Salim, Sargent, Schade, Schiminovich, Schombert, Scoville, Shapiro, Sharma, Simard, Somerville, Sommer-Larsen, Sommer-Larsen, Stadel, Steinmetz, Steinmetz, Sánchez-Janssen, T. R. Quinn, Tasker, Thacker, Thacker, Trujillo, Trujillo, van den Bosch, van den Bosch, van Zee, Vitvitska, Vogt, Vázquez, White, Wright, York   +113 more
core   +1 more source

A Degradable Bioinspired Flier with Aerogel‐Based Colorimetric Sensors for Environmental Monitoring

Advanced Science, EarlyView.
Biodegradable fliers are developed inspired by Tipuana tipu samaras, integrating cellulose nanocrystal aerogel (CNCa) sensors loaded with natural dyes for pH and ammonia detection. The lightweight, degradable fliers mimic natural morphology and aerodynamics, offering an eco‐friendly, scalable solution for in situ environmental monitoring after passive ...
Gianpaolo Gallo, Ruowen Tu, Carlo Filippeschi, Stefano Mariani, Barbara Mazzolai   +4 more
wiley   +1 more source

Nuclear Stellar Disks in Spiral Galaxies [PDF]

The Astrophysical Journal, 2002
We report evidence for nuclear stellar disks in 3 early-type spirals, namely NGC 1425, NGC 3898 and NGC 4698, revealed by WFPC2/F606W images out of a sample of 38 spiral galaxies, selected from the Hubble Space Telescope Data Archive. Adopting the photometric method introduced by Scorza & Bender we derived their central surface brightness and ...
PIZZELLA, ALESSANDRO, CORSINI, ENRICO MARIA, MORELLI, LORENZO, SARZI, MARC, SCARLATA C., STIAVELLI M., BERTOLA, FRANCESCO   +6 more
openaire   +3 more sources

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

The AGORA High-resolution Galaxy Simulations Comparison Project. VIII. Disk Formation and Evolution of Simulated Milky Way Mass Galaxy Progenitors at 1 < z < 5

The Astrophysical Journal
We investigate how differences in the stellar feedback produce disks with different morphologies in Milky Way–like progenitors over 1 ≤ z ≤ 5, using eight state-of-the-art cosmological hydrodynamics simulation codes in the AGORA project.
Minyong Jung, Ji-hoon Kim, Thịnh Hũ’u Nguyễn, Ramón Rodríguez-Cardoso, Santi Roca-Fàbrega, Joel R. Primack, Kirk S. S. Barrow, Anna Genina, Pablo Granizo, Hyeonyong Kim, Kentaro Nagamine, Yuri Oku, Johnny W. Powell, Yves Revaz, Héctor Velázquez, Alessandro Lupi, Ikkoh Shimizu, Tom Abel, Oscar Agertz, Renyue Cen, Daniel Ceverino, Avishai Dekel, Chaerin Jeong, Lucio Mayer, Boon Kiat Oh, Thomas R. Quinn, Hyunmi Song, AGORA Collaboration   +27 more
doaj   +1 more source

The Stability of Some Galaxy Disks is Still Perplexing

The Astrophysical Journal, 2023
The problem of how some disk galaxies avoid forming bars remains unsolved. Many galaxy models having reasonable properties continue to manifest vigorous instabilities that rapidly form strong bars and no widely accepted idea has yet been advanced to ...
J. A. Sellwood, R. G. Carlberg
doaj   +1 more source