Results 91 to 100 of about 195,277 (271)

Evolution of Group Galaxies from the First Red-Sequence Cluster Survey

, 2012
We study the evolution of the red galaxy fraction (f_red) in 905 galaxy groups with 0.15 < z < 0.52. The galaxy groups are identified by the `probability Friends-of-Friends' algorithm from the first Red-Sequence Cluster Survey (RCS1) photometric-redshift
B. C. Hsieh, Balogh, Balogh, Barkhouse, Bartelmann, Bell, Berlind, Bower, Carlberg, Cassata, Cowie, D'Agostini, Ellingson, Ellis, Fukugita, Gerke, Giavalisco, Gilbank, Gladders, Gladders, Gladders, Goto, Gómez, H. K. C. Yee, Hashimoto, Hsieh, I. H. Li, Kawata, Knobel, Kodama, Kodama, Li, Li, Lilly, Longair, M. Gladders, Madau, Martínez, Mulchaey, Peng, Poggianti, Poggianti, Quadri, Robotham, Stanford, Tanaka, Vogt, Wilman, Yee, Yee, Yee, Yee   +51 more
core   +1 more source

Morphological transformation of dwarf galaxies in the Local Group [PDF]

, 2015
In the Local Group there are three main types of dwarf galaxies: Dwarf Irregulars, Dwarf Spheroidals, and Dwarf Ellipticals. Intermediate/transitional types are present as well.
Carraro, Giovanni
core   +1 more source

Galaxy Groups at Intermediate Redshift [PDF]

The Astrophysical Journal, 2001
Galaxy groups likely to be virialized are identified within the CNOC2 intermediate redshift galaxy survey using an iterative method. The number-velocity dispersion relation is in agreement with the low-mass extrapolation of the cluster normalized Press-Schechter function.
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Hall,, P. B., Patton, D. R., Sawicki, M., Shepherd, C. W.   +7 more
openaire   +3 more sources

Project AMIGA: The Inner Circumgalactic Medium of Andromeda from Thick Disk to Halo

The Astrophysical Journal
The inner circumgalactic medium (CGM) of galaxies, where disk and halo processes intersect, remains poorly characterized despite its critical role in regulating galaxy evolution.
Nicolas Lehner, J. Christopher Howk, Lucy Collins, Sameer, Bart P. Wakker, Ramona Augustin, Kathleen A. Barger, Michelle A. Berg, Rongmon Bordoloi, Thomas M. Brown, Frances H. Cashman, Claude-André Faucher-Giguère, Andrew J. Fox, David M. French, Karoline M. Gilbert, Puragra Guhathakurta, John M. O’Meara, Brian W. O’Shea, Molly S. Peeples, D. J. Pisano, J. Xavier Prochaska, Jonathan Stern, Jason Tumlinson, Jessica K. Werk, Benjamin F. Williams   +24 more
doaj   +1 more source

The shape of poor groups of galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
7 pages, MNRAS accepted ...
Plionis, M., Basilakos, S., Tovmassian, H.   +2 more
openaire   +2 more sources

MUC1 as a Survival Effector of Radiotherapy‐Induced Epithelial Hybrid States in Basal‐Like Breast Cancer

International Journal of Cancer, EarlyView.
Basal‐like breast cancer (BLBC) is aggressive and often exhibits inherent or acquired resistance to radiotherapy (RT), a primary treatment option. RT resistance is underpinned by molecular alterations, many of which are poorly understood. Here, RT‐induced transcriptomic changes were analyzed using bulk and spatial sequencing in a BLBC mouse model and ...
Garyfallia Pantelaiou‐Prokaki, Husam Bamahmoud, Nadine S. Georges, Shaishavi Jansari, Annika Jung, Daniela Grimm, Evangelos Prokakis, Fabian Alexander Gayer, Maryam Deldar, Christian Dullin, Julia Gallwas, Florian Wegwitz, Frauke Alves   +12 more
wiley   +1 more source

A Massive Quiescent Galaxy in a Group Environment at z = 4.53

The Astrophysical Journal
We report on the spectroscopic confirmation of a massive quiescent galaxy at z _spec = 4.53 in the COSMOS field. The object was first identified as a galaxy with suppressed star formation at z _phot ∼ 4.65 from the COSMOS2020 catalog.
Takumi Kakimoto, Masayuki Tanaka, Masato Onodera, Rhythm Shimakawa, Po-Feng Wu, Katriona M. L. Gould, Kei Ito, Shuowen Jin, Mariko Kubo, Tomoko L. Suzuki, Sune Toft, Francesco Valentino, Kiyoto Yabe   +12 more
doaj   +1 more source

Star Formation Histories with Gaia: The Galaxy and Beyond

Open Astronomy, 2003
ESA’s Gaia mission will provide accurate astrometric, photometric and spectroscopic data for millions of stars in the Galaxy and beyond. We discuss the prospects of using this vast amount of astrophysical information for understanding star formation ...
Kučinskas A., Lindegren L., Tanabé T., Vansevičius Savanorių   +3 more
doaj   +1 more source

THE LOCAL DWARF GALAXIES:BUILDING BLOCKS OFMASSIVE ONES? I.THE FORNAX DWARF GALAXY

Odessa Astronomical Publications, 2008
A chemical evolution of the Local Group dwarf galaxy Fornax is considered in the framework of the merger scenario. We suppose a galactic stellar halo to be formed as separate fragments which then merge; thus, we can calculate the set of such the ...
T. V. Nykytyuk
doaj   +1 more source

A statistical study of the luminosity gap in galaxy groups

, 2010
The luminosity gap between the two brightest members of galaxy groups and clusters is thought to offer a strong test for the models of galaxy formation and evolution.
Ghanbari, Jamshid, Khosroshahi, Habib G., Koohpaee, Ali, Rahmani, Hadi, Tavasoli, Saeed   +4 more
core   +1 more source