Results 121 to 130 of about 89,941 (303)

A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber, Maximilian Halenke, Aakash Bhat, Veronika Schaffenroth   +3 more
wiley   +1 more source

Turbulent heating in galaxy clusters brightest in X-rays [PDF]

Nature, 2014
published in ...
Aurora Simionescu, Alexey Vikhlinin, William R. Forman, Irina Zhuravleva, Norbert Werner, Steven W. Allen, Steven W. Allen, E. Churazov, P. Arévalo, P. Arévalo, Alexander Schekochihin, R. A. Sunyaev, Andrew C. Fabian, Jeremy S. Sanders   +13 more
openaire   +10 more sources

The Evolution of AGN Activity in Brightest Cluster Galaxies

The Astronomical Journal, 2022
Abstract We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations of the full 2500 deg2 South Pole Telescope (SPT)-Sunyaev–Zel’dovich cluster sample. We describe a process for identifying active galactic nuclei (AGN) in brightest cluster galaxies (BCGs) based on WISE mid-IR color and redshift ...
Taweewat Somboonpanyakul, Michael McDonald, Allison Noble, M. Aguena, S. Allam, A. Amon, F. Andrade-Oliveira, David Bacon, Matthew Bayliss, E. Bertin, S. Bhargava, D. Brooks, E. Buckley‐Geer, D. L. Burke, Michael S. Calzadilla, Rebecca Canning, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, M. E. S. Pereira, J. De Vicente, P. Doel, Peter Eisenhardt, S. Everett, A. E. Evrard, I. Ferrero, B. Flaugher, Benjamin Floyd, J. García-Bellido, E. Gaztañaga, D. W. Gerdes, Anthony H. Gonzalez, David Gruen, R. A. Gruendl, J. Gschwend, N. Gupta, G. Gutiérrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, B. Hoyle, D. J. James, T. Jeltema, Gourav Khullar, Keun-Ho Kim, Matthias Klein, K. Kuêhn, M. Lima, M. A. G. Maia, J. L. Marshall, Paul Martini, P. Melchior, F. Menanteau, R. Miquel, J. J. Mohr, R. Morgan, R. L. C. Ogando, A. Palmese, F. Paz-Chinchón, A. Pieres, A. A. Plazas Malagón, K. Reil, A. K. Romer, F. Ruppin, E. Sánchez, A. Saro, V. Scarpine, M. Schubnell, S. Serrano, I. Sevilla-Noarbe, Priyanka Singh, M. Smith, M. Soares-Santos, V. Strazzullo, E. Suchyta, M. E. C. Swanson, G. Tarlé, C. To, D. L. Tucker, R. D. Wilkinson   +81 more
openaire   +9 more sources

Extended Radio Emission in the Perhipheral Regions of the Shapley Concentration Core

Galaxies, 2017
The Shapley Concentration (SC) is a galaxy supercluster (few tens of degrees) in the Local Universe (<z>∼0.048) which is currently undergoing cluster mergers and group accretion.
Tiziana Venturi, Sandro Bardelli, Daniele Dallacasa, Gabriella Di Gennaro, Fabio Gastaldello, Simona Giacintucci, Mariachiara Rossetti   +6 more
doaj   +1 more source

Repeated Low‐Level Inflammatory Challenge Leads to Alterations in the TNF‐CXCL10 Signalling Pathway in Mouse Cerebral Endothelial Cells In Vitro

Journal of Neurochemistry, Volume 169, Issue 6, June 2025.
Intermittent, mild pro‐inflammatory systemic disease contributes to cerebrovascular pathology, however the mechanism of low‐level exposure causing injury remains unclear. Our RNA‐Seq analysis reveals continuous activation of tumour necrosis factor (TNF)‐Nuclear Factor kappa B (NF‐κB) signalling and multiple downstream inflammatory mediators in mouse ...
Megan Ritson, Dong Xia, Caroline Wheeler‐Jones, Helen B. Stolp   +3 more
wiley   +1 more source

Volume measurement of microparticles using SEM photogrammetry and 3‐D reconstruction

Meteoritics &Planetary Science, Volume 60, Issue 5, Page 1227-1235, May 2025.
Abstract In this paper, we introduce a method for volume measurement of microparticles that includes scanning electron microscope photogrammetry with 3‐D model construction. Our results show that our method limits the volume uncertainty to ±10%, which is a significant improvement compared to previous methods (which likely overestimated volume by 100 ...
Y. Zheng, X. Yang, M. Valdes, A. M. Davis, P. R. Heck   +4 more
wiley   +1 more source

WITNESSING THE FORMATION OF A BRIGHTEST CLUSTER GALAXY IN A NEARBY X-RAY CLUSTER [PDF]

, 2010
The central dominant galaxies in galaxy clusters constitute the most massive and luminous galaxies in the universe. Despite this, the formation of these brightest cluster galaxies (BCGs) and the impact of this on the surrounding cluster environment ...
J. Rasmussen, J. Mulchaey, L. Bai, T. Ponman, Somak Raychaudhury, A. Dariush   +5 more
semanticscholar   +1 more source

Models for the magnitude-distribution of brightest cluster galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
Abstract submitted to AAS.
J. P. Bernstein, S. P. Bhavsar, S. P. Bhavsar   +2 more
openaire   +4 more sources

Do arcs require flat halo cusps?

, 2003
It was recently claimed that several galaxy clusters containing radial and tangential gravitational arcs and having a measured velocity-dispersion profile for the brightest cluster galaxy had to have central density profiles considerably flatter than ...
Bartelmann, Jaffe, Jing, Klypin, M. Bartelmann, M. Meneghetti, Miralda-Escudé, Moore, Navarro, Sand, Wyithe   +10 more
core   +1 more source

Cluster detection from surface-brightness fluctuations in SDSS data [PDF]

, 2001
Galaxy clusters can be detected as surface brightness enhancements in smoothed optical surveys. This method does not require individual galaxies to be identifiable, and enables clusters to be detected out to surprisingly high redshifts, as recently ...
Aragón-Salamanca, Bahcall, Bahcall, Bartelmann, Brainerd, Carlberg, Carlberg, Carlberg, Dalcanton, Fukugita, Gonzalez, Hoessel, M. Bartelmann, Metcalfe, Navarro, Navarro, Postman, Postman, S. D. M. White, Schneider, van Dokkum, van Dokkum, Woods, Zaritsky, Zaritsky   +24 more
core   +2 more sources