Flaming, bright galaxies along the filaments of A 2744
نویسندگان
چکیده
منابع مشابه
Star formation in galaxies along the Pisces-Cetus Supercluster filaments
We investigate the variation of current star formation in galaxies as a function of distance along three supercluster filaments, each joining pairs of rich clusters, in the Pisces-Cetus supercluster, which is part of the two-degree Field Galaxy Redshift Survey (2dFGRS). We find that even though there is a steady decline in the rate of star formation, as well as in the fraction of star forming g...
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The tight correlation between galaxy bulges and their central black hole masses likely emerges in a phase of rapid collapse and starburst at high redshift. The correlation is due to the balance of gravity on gas with the feedback force from starbursts and the wind from the black hole. The tightness suggests a universal scale of gravity on gas during this phase. The scalar field in some co-varia...
متن کاملStar formation in galaxies falling into clusters along supercluster-scale filaments
With the help of a statistical parameter derived from optical spectra, we show that the current star formation rate of a galaxy, falling into a cluster along a supercluster filament, is likely to undergo a sudden enhancement before the galaxy reaches the virial radius of the cluster. From a sample of 52 supercluster-scale filaments of galaxies joining a pair of rich clusters of galaxies within ...
متن کاملLow - Frequency study of two clusters of galaxies : A 2744 and A 2219
Aims. Spectral index images can be used to constraint the energy spectrum of relativistic electrons and magnetic field distribution in radio halos and relics, providing useful information to understand their formation, evolution and connection to cluster merger processes. Methods. We present low-frequency images of the two clusters of galaxies: A2744 and A2219, in which a wide diffuse emission ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20077257