Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Dariush, Ali"'
Publikováno v:
مطالعات مدیریت بهبود و تحول, Vol 33, Iss 111, Pp 141-180 (2024)
Reforming the administrative system and government management involves a systematic and integrated effort; in such a way that effective changes can be made in the public administration system and its ability to achieve national progress can be increa
Externí odkaz:
https://doaj.org/article/ce47fdce76894854b452918bd832587b
Autor:
Raouf, Mojtaba, Smith, Rory, Khosroshahi, Habib G., Dariush, Ali A., Driver, Simon, Ko, Jongwan, Hwang, Ho Seong
We study the stellar populations of the brightest group galaxies (BGGs) in groups with different dynamical states, using GAMA survey data. We use two independent, luminosity dependent indicators to probe the relaxedness of their groups; the magnitude
Externí odkaz:
http://arxiv.org/abs/1911.02976
Autor:
Raouf, Mojtaba, Khosroshahi, Habib G., Mamon, Gary A., Croton, Darren J., Hashemizadeh, Abdolhosein, Dariush, Ali A.
We investigate the dynamical evolution of galaxies in groups with different formation epochs. Galaxy groups have been selected to be in different dynamical states, namely dynamically old and dynamically young, which reflect their early and late forma
Externí odkaz:
http://arxiv.org/abs/1803.02363
We compare the mean mass assembly histories of compact and fossil galaxy groups in the Millennium dark matter simulation and an associated semi-analytic galaxy formation model. Tracing the halo mass of compact groups (CGs) from z=0 to z=1 shows that,
Externí odkaz:
http://arxiv.org/abs/1704.00731
We present the first study of evolution of galaxy groups in the Illustris simulation. We focus on dynamically relaxed and unrelaxed galaxy groups representing dynamically evolved and evolving galaxy systems, respectively. The evolutionary state of a
Externí odkaz:
http://arxiv.org/abs/1604.05315
Autor:
Khosroshahi, Habib G., Gozaliasl, Ghassem, Rasmussen, Jesper, Molaeinezhad, Alireza, Ponman, Trevor, Dariush, Ali A., Sanderson, Alastair J. R.
We report on the X-ray and optical observations of galaxy groups selected from the 2dfGRS group catalog, to explore the possibility that galaxy groups hosting a giant elliptical galaxy and a large optical luminosity gap present between the two bright
Externí odkaz:
http://arxiv.org/abs/1406.3362
Autor:
Raouf, Mojtaba, Khosroshahi, Habib G., Ponman, Trevor J., Dariush, Ali A., Molaeinezhad, Alireza, Tavasoli, Saeed
There have been a number of studies dedicated to identification of fossil galaxy groups, arguably groups with a relatively old formation epoch. Most of such studies identify fossil groups, primarily based on a large luminosity gap, which is the magni
Externí odkaz:
http://arxiv.org/abs/1405.3962
Autor:
Virdee, Jasmeer, Hardcastle, Martin, Rawlings, Steven, Rigopoulou, Dimitra, Mauch, Tom, Jarvis, Matt, Verma, Aprajita, Smith, Daniel, Heywood, Ian, White, Sarah, Baes, Martin, Cooray, Asantha, De Zotti, Gianfranco, Eales, Steve, Michalowski, Michal, Bourne, Nathan, Dariush, Ali, Dunne, Loretta, Hopwood, Rosalind, Ibar, Eduardo, Maddox, Steve, Smith, Matthew, Valiante, Elisabetta
We perform a stacking analysis of H-ATLAS data in order to obtain isothermal dust temperatures and rest-frame luminosities at 250um (L250), for 1599 radio sources over the H-ATLAS P1 GAMA area. The radio sample is generated using a combination of NVS
Externí odkaz:
http://arxiv.org/abs/1303.6329
The Suppression of Star Formation and the Effect of Galaxy Environment in Low-Redshift Galaxy Groups
Autor:
Rasmussen, Jesper, Mulchaey, John S., Bai, Lei, Ponman, Trevor J., Raychaudhury, Somak, Dariush, Ali
Understanding the interaction between galaxies and their surroundings is central to building a coherent picture of galaxy evolution. Here we use GALEX imaging of a statistically representative sample of 23 galaxy groups at z=0.06 to explore how local
Externí odkaz:
http://arxiv.org/abs/1208.1762
Autor:
Bond, Nicholas A., Benford, Dominic J., Gardner, Jonathan P., Amblard, Alexandre, Fleuren, Simone, Blain, Andrew W., Dunne, Loretta, Smith, Daniel J. B., Maddox, Steve J., Hoyos, Carlos, Baes, Maarten, Bonfield, David, Bourne, Nathan, Bridge, Carrie, Buttiglione, Sara, Cava, Antonio, Clements, David, Cooray, Asantha, Dariush, Ali, de Zotti, Gianfranco, Driver, Simon, Dye, Simon, Eales, Steve, Eisenhardt, Peter, Hopwood, Rosalind, Ibar, Edo, Ivison, Rob J., Jarvis, Matt J., Kelvin, Lee, Robotham, Aaron S. G., Temi, Pasquale, Thompson, Mark, Tsai, Chao-Wei, van der Werf, Paul, Wright, Edward L., Wu, Jingwen, Yan, Lin
We describe the infrared properties of sources detected over ~36 deg^2 of sky in the GAMA 15-hr equatorial field, using data from both the Herschel Astrophysical Terahertz Large-Area Survey (H-ATLAS) and Wide-field Infrared Survey (WISE). With 5-sigm
Externí odkaz:
http://arxiv.org/abs/1204.2020