Zobrazeno 1 - 10
of 235
pro vyhledávání: '"Merrifield, M R"'
To investigate how the radio-identified active galactic nuclei (AGN) fraction varies with cluster-centric radius, we present the projected and de-projected distributions of a large sample of LOFAR-identified radio AGN out to $30R_{500}$ around galaxy
Externí odkaz:
http://arxiv.org/abs/2410.13440
Autor:
Sampaio, V. M., de Carvalho, R. R., Aragón-Salamanca, A., Merrifield, M. R., Ferreras, I., Cornwell, D. J.
Galaxies infalling into clusters undergo both star-formation quenching and morphological transformation due to environmental effects. We investigate these processes and their timescales using a local sample of 20,191 cluster and 11,674 field galaxies
Externí odkaz:
http://arxiv.org/abs/2406.12273
In order to examine where, how and why the quenching of star formation begins in the outskirts of galaxy clusters, we investigate the de-projected radial distribution of a large sample of quenched and star-forming galaxies (SFGs) out to $30R_{500}$ a
Externí odkaz:
http://arxiv.org/abs/2406.02196
Autor:
Sampaio, V. M., Aragón-Salamanca, A., Merrifield, M. R., de Carvalho, R. R., Zhou, S., Ferreras, I.
We exploit a sample of 80,000 SDSS central galaxies to investigate the effect of AGN feedback on their evolution. We trace the demographics of optically-selected AGN (Seyferts) as a function of their internal properties and environment. We find that
Externí odkaz:
http://arxiv.org/abs/2307.10435
In order to study the ram-pressure interaction between radio galaxies and the intracluster medium, we analyse a sample of 208 highly-bent narrow-angle tail radio sources (NATs) in clusters, detected by the LOFAR Two-metre Sky Survey. For NATs within
Externí odkaz:
http://arxiv.org/abs/2107.00449
Akademický článek
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Autor:
Pulsoni, C., Gerhard, O., Arnaboldi, M., Coccato, L., Longobardi, A., Napolitano, N. R., Narayan, C., Gupta, V., Burkert, A., Capaccioli, M., Chies-Santos, A. L., Cortesi, A., Freeman, K. C., Kuijken, K., Merrifield, M. R., Romanowsky, A. J., Tortora, C.
Publikováno v:
A&A 618, A94 (2018)
In the hierarchical two-phase formation scenario, the extended halos of early type galaxies (ETGs) are expected to have different physical properties from those of the galaxies' central regions. This work aims at characterizing the kinematic properti
Externí odkaz:
http://arxiv.org/abs/1712.05833
Autor:
Old, L., Wojtak, R., Mamon, G. A., Skibba, R. A., Pearce, F. R., Croton, D., Bamford, S., Behroozi, P., de Carvalho, R., Muñoz-Cuartas, J. C., Gifford, D., Gray, M. E., von der Linden, A., Merrifield, M. R., Muldrew, S. I., Müller, V., Pearson, R. J., Ponman, T. J., Rozo, E., Rykoff, E., Saro, A., Sepp, T., Sifón, C., Tempel, E.
This article is the second in a series in which we perform an extensive comparison of various galaxy-based cluster mass estimation techniques that utilise the positions, velocities and colours of galaxies. Our aim is to quantify the scatter, systemat
Externí odkaz:
http://arxiv.org/abs/1502.07347
Autor:
Sampaio, V M, de Carvalho, R R, Aragón-Salamanca, A, Merrifield, M R, Ferreras, I, Cornwell, D J
Publikováno v:
Monthly Notices of the Royal Astronomical Society; 7/25/2024, Vol. 532 Issue 1, p982-994, 13p
Publikováno v:
Monthly Notices of the Royal Astronomical Society; 7/15/2024, Vol. 531 Issue 4, p4383-4390, 8p