galaxies: active
An X ray search for active cores in Local Group galaxies
... Among the others, The PSPC observations of Pegasus and Sextans show some X-ray emission th a t reaches 3a over the background around the central area. Such emission may be from a point source w ith low count rate which ...
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Galaxy and Mass Assembly (GAMA): active galactic nuclei in pairs of galaxies
... Seyfert galaxies it was sug- gested that a dusty torus around the active nucleus was responsible for scattering the light, resulting in the so called “unified model of ...
16
Studying the Flux Density of Bright Active Galaxies at Different Spectral Bands
... of active galaxies (Sy1, Sy2 and QSO) and IRAS (Infrared Astronomical Satellite) Seyfert1 galaxies and Warm IRAS AGNs galaxies do not dominate the distribution between ...
7
Active galaxies can make axionic dark energy
... To keep things simple, let us consider that the electromagnetic source term has no time dependence. This implies that we consider the magnetic field of gravitationally bound structures (such as galaxies) which do ...
10
A semi-analytic model for the co-evolution of galaxies, black holes and active galactic nuclei
... the galaxies near their final coalescence, the accretion onto the BH rises to approximately the Eddington ...progenitor galaxies with higher gas fractions suffer more dissipation, and produce more compact ...
33
Astronomy Galaxies and the Expanding Universe pdf
... called active galaxies, such as Seyfert galaxies, originally recognized by the American astronomer Carl ...Seyfert galaxies have very bright nuclei with strong emission lines of hydrogen and ...
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Galaxy Zoo:Probabilistic Morphology through Bayesian CNNs and Active Learning
... Our results motivate various improvements to the prob- abilistic morphology models we introduce. In Section 2.7, we showed that our models were approximately well-calibrated, particularly after applying MC Dropout. ...
23
Mineo, Stefano (2011): X-ray emission from star-forming galaxies. Dissertation, LMU München: Fakultät für Physik
... In der Gesamtstichprobe wurden ungef¨ahr 1000 kompakte R¨ontgenquellen detektiert, von denen ∼ 300 aktive Galaxienkerne (engl.: active galactic nuclei; AGN) im Hintergrund sein d¨ urften. Bei der Mehrzahl der ...
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New look on the origin of cosmic rays
... relativistic jets emitted from the surroundings of massive black holes. Thus, acceleration by shock waves from supernova explosions is not possible to explain the origin of cosmic rays up to energies 10 18 eV. Otherwise, ...
8
SDSS IV MaNGA the spatially resolved transition from star formation to quiescence
... local galaxies result from photoionization by hot evolved stars, not active galactic nuclei, hence tracing galactic region hosting old stellar population where, despite the presence of ionized gas, star ...
20
Triggering active galactic nuclei in galaxy clusters
... rich galaxies suggest that below the regime of ram pressure stripping the enhanced pressure might lead to an elevated level of star forma- tion and the onset of AGN ...of galaxies, which are broadly ...
14
Disc colours in field and cluster spiral galaxies at 0 5 ≲z≲ 0 8
... spiral galaxies, and our control sample is composed of 96 field disc ...spiral galaxies have disc V − I colours redder by more than 1σ of the mean colours of their field ...of galaxies with red discs ...
13
nIFTy cosmology: comparison of galaxy formation models
... with galaxies: the HOD (Jing, Mo & Boerner 1998; Cooray & Sheth 2002), as well as the complementary models of the conditional luminosity function (CLF; Yang, Mo & van den Bosch 2003) and subhalo ...
31
Why is "The Evolution of Stars" incorrect?
... This quotation from Wikipedia may had been acceptable in the past, because readers were unable to check the real situation in data bases of stars and other objects inside the galaxy and beyond. These days, when there is ...
6
A mature galaxy cluster at z= 1 58 around the radio galaxy 7C 1753+6311
... Source extraction was done with SExtractor ( Bertin & Arnouts 1996 ) in dual-image mode. The HST F140W detection image was used to detect sources, and photometry was obtained on the i ¢ , J, 3.6, and 4.5 μ m images ...
8
DDO 216 A1: a central globular cluster in a low luminosity transition type galaxy
... dwarf galaxies probably stem from a combination of the location of DDO 216-A1, seen in projection against the densest part of PegDIG; the unusually extended nature of the cluster, which both gives it much less ...
12
Determining the halo mass scale where galaxies lose their gas
... cluster galaxies, they found that the fi eld galaxies were approximately 1 – 2 Gyr younger than the cluster galaxies at a fi xed stellar ...eld galaxies and explore the consequences ...old ...
22
GLACE survey: OSIRIS/GTC tuneable filter Hα imaging of the rich galaxy cluster ZwCl 0024 0+1652 at z=0 395
... SF galaxies using the ratio between the [N ] and the Hα ...LINER galaxies, the so-called “EWαn2 di- agram” as depicted in the left-hand panel of ...Seyfert galaxies tend to have a higher power for ...
22
Cosmic web of galaxies in the COSMOS field:public catalog and different quenching for centrals and satellites
... tive method in identifying its major components make such studies challenging. Nonetheless, several meth- ods have been developed to quantify and extract the components of the cosmic web in both simulations and ...
16
Photographic, spectrographic and photometric studies of southern galaxies
... process was often more complicated, as one of 3 graphs had to he used. In addition, the steep curve was often rotated in order to obtain a smooth fit of the points. This applied, for instance, to the late type spiral NGC ...
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