Results 21 to 30 of about 144,349 (266)

Environmental Dependence of the Mass–Metallicity Relation in Cosmological Hydrodynamical Simulations

The Astrophysical Journal, 2023
We investigate the environmental dependence of the gas-phase metallicity for galaxies at z = 0 to z ≳ 2 and the underlying physical mechanisms driving this dependence using state-of-the-art cosmological hydrodynamical simulations.
Kai Wang, Xin Wang, Yangyao Chen
doaj   +1 more source

Simulating Groups and the IntraGroup Medium: The Surprisingly Complex and Rich Middle Ground between Clusters and Galaxies

Universe, 2021
Galaxy groups are more than an intermediate scale between clusters and halos hosting individual galaxies, they are crucial laboratories capable of testing a range of astrophysics from how galaxies form and evolve to large scale structure (LSS) statistics
Benjamin D. Oppenheimer, Arif Babul, Yannick Bahé, Iryna S. Butsky, Ian G. McCarthy   +4 more
doaj   +1 more source

Radio galaxy feedback in X-ray selected groups from COSMOS: the effect on the ICM [PDF]

, 2010
We quantify the importance of the mechanical energy released by radio-galaxies inside galaxy groups. We use scaling relations to estimate the mechanical energy released by 16 radio-AGN located inside X-ray detected galaxy groups in the COSMOS field.
A. Finoguenov, A. M. Koekemoer, A. Oklopčić, Bîrzan, Bîrzan, Condon, D. B. Sanders, D. Pierini, D. Thompson, De Young, Donahue, Drory, Dunkley, E. Schinnerer, Finoguenov, G. W. Pratt, G. Zamorani, Giodini, Gitti, H. Boehringer, Heinz, Ilbert, J. S. Kartaltepe, L. Bîrzan, Leauthaud, Lin, M. Salvato, Markevitch, Peterson, Pratt, Puchwein, R. Massey, Reiprich, S. Giodini, Salvato, Schinnerer, Scoville, Short, Skrutskie, Smolčić, Smolčić, Sun, V. Smolčić, Voit, Wright   +44 more
core   +4 more sources

Galaxy-galaxy weak-lensing measurement from SDSS: II. host halo properties of galaxy groups [PDF]

, 2017
As the second paper of a series on studying galaxy-galaxy lensing signals using the Sloan Digital Sky Survey Data Release 7 (SDSS DR7), we present our measurement and modelling of the lensing signals around groups of galaxies.
Fu, Liping, Li, Nan, Lu, Tianhuan, Luo, Wentao, Mo, H. J., Radovich, Mario, Shi, Feng, Shu, Chenggang, Sunayama, Tomomi, Wang, Lei, Yang, Xiaohu, Zhang, Jiajun, Zhang, Jun   +12 more
core   +2 more sources

The Origin of Intergalactic Light in Compact Groups of Galaxies

Universe, 2021
We investigate the origin of intergalactic light (IGL) in close groups of galaxies. IGL is hypothesized to be the byproduct of interaction and merger within compact groups.
Mark J. Henriksen
doaj   +1 more source

Galaxy interactions II: High density environments [PDF]

, 2011
With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7).
Abazajian, Abazajian, Alonso, Alonso, Alonso, Baldry, Baldry, Balogh, Balogh, Balogh, Barton, Berlind, Blanton, Brinchmann, Ceccarelli, Colless, Cooper, Cooper, Coziol, D. G. Lambas, Darg, De Lucia, Dressler, Ellison, González, González, Gunn, Heiderman, Hopkins, Hopkins, Huchra, Kauffmann, Kennicutt, Lacerna, Lambas, Lambas, Lin, Mamon, Mamon, McIntosh, Merchán, Michel-Dansac, Morgan, N. Padilla, Padilla, Padilla, Padilla, Park, Patton, Pérez, Robaina, S. Alonso, Simard, Skibba, Skibba, Strauss, V. Mesa, von der Linden, Wang, Wong, Yang, York, Zapata, Zibetti, Zwicky   +64 more
core   +1 more source

Somewhere in between: Tracing the Radio Emission from Galaxy Groups (or Why Does the Future of Observing Galaxy Groups with Radio Telescopes Look Promising?)

Galaxies, 2021
Galaxy groups constitute the most common class of galaxy systems in the known Universe, unique in terms of environmental properties. However, despite recent advances in optical and infrared observations as well as in theoretical research, little is known
Błażej Nikiel-Wroczyński
doaj   +1 more source

Searches for ultracompact dwarf galaxies in galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
8 pages, 2 figures, accepted for publication in ...
Evstigneeva, E. A., Drinkwater, M. J., Jurek, R., Firth, P., Jones, J. B., Gregg, M. D., Phillipps, S.   +6 more
openaire   +3 more sources

Radio emission of Shakhbazian Compact Galaxy Groups [PDF]

, 1999
Three hundred fifty three radio sources from the NRAO VLA Sky Survey (NVSS) (Condon et al. 1998) and the FIRST Survey (White et al. 1997}, are detected in the areas of 179 Shakhbazian Compact Groups (ShCGs) of galaxies.
Amirkhanian A. S., Amirkhanian A. S., Baier F. W., Baldwin J. E., Barnes J., Cohen A. M., de Ruiter H. R., del Olmo A., H. M. Tovmassian, H. Tiersch, Kodaira K., Kodaira K., Kodaira K., Lynds C. R., Mendes de Oliveira C., Menon T. K., Menon T. K., O. V. Verkhodanov, Saracco P., Shakhbazian R. K., Stoll D., Stoll D., Tiersch H., Tiersch H., Tovmassian H. M., Tovmassian H. M., Tovmassian H. M., Tovmassian H. M., V. H. Chavushyan, Vennik J., Walke D. G.   +30 more
core   +2 more sources

CHOIRS H I GALAXY GROUPS: THE METALLICITY OF DWARF GALAXIES [PDF]

The Astrophysical Journal, 2014
We present a recalibration of the luminosity-metallicity relation for gas-rich, star-forming dwarfs to magnitudes as faint as M-R similar to -13. We use the Dopita et al. metallicity calibrations to calibrate the relation for all the data in this analysis.
Sweet, Sarah M., Drinkwater, Michael J., Meurer, Gerhardt, Bekki, Kenji, Dopita, Michael A., Kilborn, Virginia, Nicholls, David C.   +6 more
openaire   +3 more sources