Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Khosroshahi, H. G."'
[Abridged] To understand the role of the galaxy group environment on galaxy evolution, we present a study of radio luminosity functions (RLFs) of group galaxies based on the VLA-COSMOS 3 GHz Large Project. The radio-selected sample of 7826 COSMOS gal
Externí odkaz:
http://arxiv.org/abs/2204.02082
Autor:
Gozaliasl, G., Finoguenov, A., Khosroshahi, H. G., Laigle, C., Kirkpatrick, C. C., Kiiveri, K., Devriendt, J., Dubois, Y., Ahoranta, J.
Publikováno v:
A&A 635, A36 (2020)
In an effort to better understand the formation of galaxy groups, we examine the kinematics of a large sample of spectroscopically confirmed X-ray galaxy groups in the Cosmic Evolution Survey (COSMOS) with a high sampling of galaxy group members up t
Externí odkaz:
http://arxiv.org/abs/2001.07367
There is a correlation between bulge mass of the three main galaxies of the Local Group (LG), i.e. M31, Milky Way (MW), and M33, and the number of their dwarf spheroidal galaxies. A similar correlation has also been reported for spiral galaxies with
Externí odkaz:
http://arxiv.org/abs/1811.08898
Publikováno v:
MNRAS, 464, 4593 (2017); Erratum: MNRAS, 503, 2881 (2021)
We investigate how the stellar populations of the inner regions of the first and the second brightest group galaxies (respectively BGGs and SBGGs) vary as a function of magnitude gap, using an SDSS-based sample of 550 groups with elliptical BGGs. The
Externí odkaz:
http://arxiv.org/abs/1604.07726
We study Active Galactic Nucleus (AGN) activity in the fossil galaxy cluster, RX J1416.4+2315. Radio observations were carried out using Giant Metrewave Radio Telescope (GMRT) at two frequencies, 1420 MHz and 610 MHz. A weak radio lobe that extends f
Externí odkaz:
http://arxiv.org/abs/1509.08726
Autor:
Gozaliasl, G., Khosroshahi, H. G., Dariush, A. A., Finoguenov, A., Jassur, D. M. Z., Molaeinajad, A.
Publikováno v:
A&A 571, A49 (2014)
Using the semi-analytic models based on the Millennium simulation, we trace back the evolution of the luminosity function of galaxies residing in progenitors of groups classified by the magnitude gap at redshift zero. We determine the luminosity func
Externí odkaz:
http://arxiv.org/abs/1409.1215
Autor:
Miraghaei, H., Khosroshahi, H. G., Klöckner, H. -R., Ponman, T. J., Jetha, N. N., Raychaudhury, S.
We study intergalactic medium (IGM) heating in a sample of five fossil galaxy groups by using their radio properties at 610 MHz and 1.4 GHz. The power by radio jets introducing mechanical heating for the sampled objects is not sufficient enough to su
Externí odkaz:
http://arxiv.org/abs/1407.0759
Autor:
Gozaliasl, G., Finoguenov, A., Khosroshahi, H. G., Mirkazemi, M., Salvato, M., Jassur, D. M. Z., Erfanianfar, G., Popesso, P., Tanaka, M., Lerchster, M., Kneib, J. P., McCracken, H. J., Mellier, Y., Egami, E., Pereira, M. J., Brimioulle, F., Erben, T., Seitz, S.
Publikováno v:
A&A 566, A140 (2014)
We present a catalog of 129 X-ray galaxy groups, covering a redshift range 0.04
Externí odkaz:
http://arxiv.org/abs/1405.3412
Autor:
Vaduvescu, O., Birlan, M., Tudorica, A., Popescu, M., Colas, F., Asher, D. J., Sonka, A., Suciu, O., Lacatus, D., Paraschiv, A., Badescu, T., Tercu, O., Dumitriu, A., Chirila, A., Stecklum, B., Licandro, J., Nedelcu, A., Turcu, E., Vachier, F., Beauvalet, L., Taris, F., Bouquillon, L., Nunez, F. Pozo, Saavedra, J. P. Colque, Unda-Sanzana, E., Karami, M., Khosroshahi, H. G., Toma, R., Ledo, H., Tyndall, A., Patrick, L., Fohring, D., Muelheims, D., Enzian, G., Klaes, D., Lenz, D., Mahlberg, P., Ordenes, Y., Sendlinger, K.
Publikováno v:
2013P&SS...85..299V
We report follow-up observations of 477 program Near-Earth Asteroids (NEAs) using nine telescopes of the EURONEAR network having apertures between 0.3 and 4.2 m. Adding these NEAs to our previous results we now count 739 program NEAs followed-up by t
Externí odkaz:
http://arxiv.org/abs/1308.5594
Autor:
Kourkchi, E., Khosroshahi, H. G., Carter, D., Karick, A. M., Mármol-Queraltó, E., Chiboucas, K., Tully, R. B., Mobasher, B., Guzmán, R., Matković, A., Gruel, N.
Publikováno v:
2012, MNRAS, 420, 2819
We present the study of a large sample of early-type dwarf galaxies in the Coma cluster observed with DEIMOS on the Keck II to determine their internal velocity dispersion. We focus on a subsample of 41 member dwarf elliptical galaxies for which the
Externí odkaz:
http://arxiv.org/abs/1110.2649