Results 31 to 40 of about 228,068 (290)

Crawling the Cosmic Network: Exploring the Morphology of Structure in the Galaxy Distribution [PDF]

, 2010
Although coherent large-scale structures such as filaments and walls are apparent to the eye in galaxy redshift surveys, they have so far proven difficult to characterize with computer algorithms. This paper presents a procedure that uses the eigenvalues
Abazajian, Aragón-Calvo, Barrow, Berlind, Blanton, Bond, Bond, Colberg, Colless, Colombi, Davis, De Lapparent, Dietrich, Eisenstein, Forero-Romero, Frenk, Fry, Gaztanaga, Geller, Gott, Guth, Hahn, Huchra, Klypin, Kulkarni, Lee, Martínez, Massey, Michael A. Strauss, Nichol, Nicholas A. Bond, Novikov, Pan, Park, Peebles, Press, Renyue Cen, Roberts, Ross, Schaap, Shandarin, Shen, Smith, Sousbie, Sousbie, Spergel, Stein, Strauss, Tanaka, Thompson, Verde, York, Zel'dovich, Zel'dovich, Zheng   +54 more
core   +1 more source

High‐Density Boron Nitride Nanotube Composites via Surfactant‐Stabilized Lyotropic Liquid Crystals for Enhanced Space Radiation Shielding

Advanced Functional Materials, EarlyView.
High‐density BNNT films, enabling mechanical robustness and high space radiation shielding effectiveness, are fabricated using surfactant‐stabilized BNNT liquid crystal. Simulations indicate that a 50 g cm−2 BNNT film can reduce radiation exposure by 56% compared to zero shielding, potentially doubling the duration of astronaut missions on the lunar ...
Young‐Kyeong Kim, Ik Jae Lim, Hongjin Lim, Yongbi Joo, Jueun Park, Md Monir Hossain, Hyunjin Cho, Nam‐Ho You, Seokhoon Ahn, Hunsu Lee, Sang Seok Lee, Yongho Joo, Se Youn Moon, Hee Il Yoo, Calista Lum, Cheol Park, Siyoung Q. Choi, Se Gyu Jang   +17 more
wiley   +1 more source

The Thick Disk in the Galaxy NGC 4244 from S^4G Imaging [PDF]

, 2010
If thick disks are ubiquitous and a natural product of disk galaxy formation and/or evolution processes, all undisturbed galaxies that have evolved during a significant fraction of a Hubble time should have a thick disk. The late-type spiral galaxy NGC
Athanassoula, E., Bosma, Albert, Buta, Ronald J., Comerón, Sébastien, Elmegreen, Bruce G., Gil de Paz, Armando, Hinz, Joannah L., Ho, Luis C., Holwerda, Benne W., Kim, Taehyun, Knapen, Johan H., Laurikainen, Eija, Menéndez-Delmestre, Karín, Muñoz-Mateos, Juan-Carlos, Regan, Michael W., Salo, Heikki, Schinnerer, Eva, Seibert, Mark, Sheth, Kartik   +18 more
core   +5 more sources

Triazine‐Trione Thermosets with High Processability for Scaffold Applications in Bone Tissue Engineering

Advanced Healthcare Materials, EarlyView.
Novel photo‐clickable triazine‐trione thermosets can be shaped and cured under mild conditions, including room and physiological temperatures. These materials are biocompatible and support osteogenic differentiation of bone marrow–derived mesenchymal stem cells on their surface.
Åshild Johansen, Shuntaro Yamada, Daniel J. Hutchinson, Mohammed A. Yassin, Samih Mohamed‐Ahmed, Cecilie Gjerde, Michael Malkoch, Kamal Mustafa   +7 more
wiley   +1 more source

The transformation of Spirals into S0 galaxies in the cluster environment

Frontiers in Astronomy and Space Sciences, 2015
We discuss the observational evidences of the morphological transformation of Spirals into S0 galaxies in the cluster environment exploiting two big databases of galaxy clusters: WINGS (0 ...
Mauro eD'onofrio, Paola eMarziani, Lucio eBuson   +2 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

PKS2250-41: a case study for triggering

, 2008
We present the results of a multiwavelength study of the z = 0.31 radio source PKS2250-41. Integral field unit and long-slit spectroscopy obtained using VIMOS and FORS1 on the VLT, and archival HST optical imaging observations are used to study the ...
Appenzeller I., Best P. N., Binette L., Bremer M. N., C. N. Tadhunter, Clark N. E., D. Dicken, Danziger I. J., Dickson R., Howarth I. D., J. Holt, K. J. Inskip, M. Villar-Martín, Moorwood A., Morganti R., R. Morganti, Shaw M., Tadhunter C., Tadhunter C. N.   +18 more
core   +1 more source

Structure of the Draco Dwarf Spheroidal Galaxy [PDF]

, 2002
This article studies the structure of the Draco dwarf spheroidal galaxy with an emphasis on the question of whether the spatial distribution of its stars has been affected by the tidal interaction with the Milky Way, using R- and V-band CCD photometry ...
Carlton Pryor, Edward W. Olszewski, Irwin M. J., Leon S., Sellwood J. A., Slawomir Piatek, Taft E. Armandroff   +6 more
core   +2 more sources

Facile Bottom‐Up Assembly of Photonic Micropatterns via Surface‐Guided Colloidal Crystallization

Advanced Materials, EarlyView.
High‐resolution photonic micropatterns with vivid structural colors are fabricated through bottom‐up assembly, guided by surface‐dependent regioselective heterogeneous nucleation and crystal growth of colloidal particles. Full‐spectrum color tunability is achieved by controlling particle size and interparticle attraction, while in situ color mixing is ...
Yongseok Jung, Sehee Yang, Sanghyuk Park, Shin‐Hyun Kim   +3 more
wiley   +1 more source

Kinematical Fluctuations Vary with Galaxy Surface Mass Density

The Astrophysical Journal Letters, 2023
The Galaxy inner parts are generally considered to be optically symmetric, as well as kinematically symmetric for most massive early-type galaxies. At the lower-mass end, many galaxies contain lots of small patches in their velocity maps, causing their ...
Ze-Hao Zhong, Gang Zhao, Hans-Walter Rix, Luis C. Ho   +3 more
doaj   +1 more source