Results 111 to 120 of about 12,566,242 (368)

maggie: Models and Algorithms for Galaxy Groups, Interlopers and Environment [PDF]

, 2014
Redshift distortions make it notoriously difficult to recover real-space galaxy groups from redshift space data. We make use of the previously measured universal distribution of halo interlopers in projected phase space, which we combine with our ...
M. Duarte, G. Mamon
semanticscholar   +1 more source

Radiation Hardened Infrared Photodetectors Based on a Narrow Bandgap Conjugated Polymer Semiconductor

Advanced Electronic Materials, EarlyView.
A blackbody‐sensitive infrared photodetector comprised of an open‐shell conjugated polymer demonstrates high sensitivity without cooling and exceptional radiation hardness, surpassing inorganic compound semiconductor devices. This functionality, inherent to the polymer semiconductor, provides a new frontier for low‐cost, size, weight, and power space ...
Anthony R. Benasco, Chih‐Ting Liu, Bernie Rax, Giacomo Mariani, Steve McClure, Tyler Bills, Sanyukta Datta Gupta, Mohammad I. Vakil, Stefan Nikodemski, Jarrett H. Vella, Jason D. Azoulay   +10 more
wiley   +1 more source

The DEEP2 Galaxy Redshift Survey: The Voronoi-Delaunay Method Catalog of Galaxy Groups [PDF]

, 2012
We present a public catalog of galaxy groups constructed from the spectroscopic sample of galaxies in the fourth data release from the Deep Extragalactic Evolutionary Probe 2 (DEEP2) Galaxy Redshift Survey, including the Extended Groth Strip (EGS).
Aaron A. Dutton, Alison L. Coil, Andrew C. Phillips, Benjamin J. Weiner, Berlind, Brian F. Gerke, Christopher N. A. Willmer, Coil, Coil, Coil, Coil, Conroy, David C. Koo, David J. Rosario, Davis, Davis, Evrard, Faber, Fang, Gerke, Gladders, Hao, Jeffrey A. Newman, Kai Noeske, Kenney, Klypin, Knobel, Koester, Li, Lihwai Lin, Lilly, Liu, Ma, Marc Davis, Marinoni, Michael C. Cooper, Miller, Newman, Newman, Nicholas Konidaris, Nolthenius, Puragra Guhathakurta, Renbin Yan, S. M. Faber, Soares-Santos, Tinker, Willmer, Yan, Zheng, Zheng   +49 more
core   +3 more sources

Isolated Galaxies, Pairs and Groups of Galaxies [PDF]

International Astronomical Union Colloquium, 1990
We searched for isolated galaxies, pairs and groups of galaxies in the CfA survey (Huchra et al. 1983). It was assumed that the distances to galaxies are given by R = V/H0, where H0 = 100 km s−1 Mpc−1 and R> 6 Mpc.
I. Kuneva, M. Kalinkov
openaire   +2 more sources

Compact groups in the UZC galaxy sample

, 2002
Applying an automatic neighbour search algorithm to the 3D UZC galaxy catalogue (Falco 1999) we have identified 291 compact groups (CGs) with redshifts between 1000 and 10000 km/s.
Athanassoula, B. Kelm, Bahcall, Barnes, Barton, Barton, Benoist, Bothun, Cappi, Coziol, Coziol, Davis, de Carvalho, Diaferio, Dressler, Falco, Fisher, Fried, Governato, Heldson, Hernquist, Hickson, Hickson, Hickson, Hickson, Huchra, Huchra, Karachentsev, Kelm, Maia, Mamon, Mamon, Mamon, Mamon, Marzke, Mendes de Oliveira, Montoya, Moore, Mulchaey, Oosterloo, P. Focardi, Ponman, Postman, Prandoni, Ramella, Ratcliffe, Ribeiro, Rubin, Sanders, Somerville, Struble, Tonry, Tresse, Tully, Verdes-Montenegro, Walke, Williams, Withmore, Zabludoff, Zaritsky, Zepf, Zucca   +61 more
core   +1 more source

The Orientation of Galaxies in Nearby Galaxy Groups [PDF]

Symposium - International Astronomical Union, 2004
The statistical analysis of six nearby groups of galaxies, connected with the Milky Way, M31, M81, M101, NGC5128 and NGC5236 shows an isotropic distribution of galaxy planes, similarly to galaxies within the Local Group. Also planes of galaxies in the nearby (Vr < 500 km s−1) region of the Local Supercluster exhibit random distribution, disregarding
Piotr Flin, M. Biernacka, J. Krywult
openaire   +2 more sources

Compliant Robotics in Space: A Prospective Review of Soft and Deformable Systems for Space Missions

Advanced Intelligent Systems, EarlyView.
Compliant robots are increasingly becoming integral to space exploration due to their adaptability, flexibility, and lightweight design. This article reviews categories such as soft, reconfigurable, and hyper‐redundant robots and their evolving role in enhancing space missions.
Hamed Rahimi Nohooji, Holger Voos
wiley   +1 more source

HCG 57: Evidence for Shock-heated Intergalactic Gas from X-Rays and Optical Emission Line Spectroscopy

The Astrophysical Journal
We present Chandra and XMM-Newton X-ray observations of the compact group HCG 57, and optical integral field spectroscopy of the interacting galaxy pair HCG 57A/D.
Ewan O’Sullivan, P. N. Appleton, B. A. Joshi, Lauranne Lanz, Katherine Alatalo, Jan M. Vrtilek, Andreas Zezas, Laurence P. David   +7 more
doaj   +1 more source

SARCS strong-lensing galaxy groups - II. Mass-concentration relation and strong-lensing bias [PDF]

, 2014
Our work is based on the stacked weak-lensing analysis of a sample of 80 strong-lensing galaxy groups. Our main results are the following: (i) the lensing signal does not allow us to firmly reject a simple singular isothermal sphere mass distribution ...
G. Foex, V. Motta, E. Jullo, M. Limousin, T. Verdugo   +4 more
semanticscholar   +1 more source

Galaxy Peculiar Velocities and Infall onto Groups

, 2005
We perform statistical analyses to study the infall of galaxies onto groups and clusters in the nearby Universe. The study is based on the UZC and SSRS2 group catalogs and peculiar velocity samples.
Ceccarelli, M. L., Giovanelli, R., Haynes, M., Lambas, D. G., Padilla, N., Valotto, C.   +5 more
core   +2 more sources