Active galaxies
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
Gemini NIFS survey of feeding and feedback processes in nearby active galaxies - II. The sample and surface mass density profiles
... individual galaxies, selected using distinct cri- teria, and a study of a well-defined, comprehensive sam- ple is of fundamental importance to understand the rela- tion among AGN feeding, feedback and galaxy ...
18
ZFOURGE catalogue of AGN candidates: an enhancement of 160-μm-derived star formation rates in active galaxies to z = 3.2
... AGN luminosity limited sample of 235 AGN hosts over z = 0.2 − 3.2. We compare the rest-frame U − V versus V − J (UV J) colours and specific star-formation rates (sSFRs) of the AGN hosts to a mass-matched control sample ...
16
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
ZFOURGE catalogue of AGN candidates: an enhancement of 160-μm-derived star formation rates in active galaxies to z = 3.2
... The accretion of material on to an SMBH is known to produce nuclear radio emission, collimated into relativistic jets that prop- agate perpendicular to the plane of the accretion disc. While the detection of such ...
13
Reverberation mapping of optical emission lines in five active galaxies
... Uncertainties on the line light curves were estimated using a Monte Carlo approach: we perturbed the observed spectrum with random deviates scaled to the uncertainty at each wavelength, [r] ...
27
Studying the [O iii]λ5007 Å Emission-line Width in a Sample of ∼ 80 Local Active Galaxies: A Surrogate For σ⋆?
... To mitigate this problem, several studies have suggested to use the width of the [O III ]λ5007 Å emission line (hereafter [O III ]) orig- inating in the narrow-line region (NLR) as a surrogate for σ , as- suming that the ...
15
The VIMOS Public Extragalactic Redshift Survey (VIPERS) : galaxy segregation inside filaments at z ≃ 0 7
... how galaxies with different stellar masses and stellar activities are distributed around the filaments and find a significant segregation, with the most massive or quiescent galaxies being closer to the ...
7
New look on the origin of cosmic rays
... 3 · 10 18 eV, where I (E) ∝ E − 3 . 1 . This region is called the ‘ankle’, here cosmic rays of Galactic origin are replaced by particles, the origin of which has extragalactic nature. They come from active ...
8
Mimica, Petar (2004): Numerical Simulations of Blazar Jets and their Non-thermal Radiation. Dissertation, LMU München: Fakultät für Physik
... VLBI observations of the nuclei of radio-loud active galaxies reveal the following important facts (Pearson 1996): (1) well-collimated parsec-scale jets are seen, indicating that the cen[r] ...
159
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 ...
227
nIFTy cosmology: comparison of galaxy formation models
... from the Millennium simulation have been compared with a special focus on the luminosity function (LF) of galaxy groups – high- lighting differences amongst models, especially for the magnitude gap distribution between ...
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
The Distribution of Rich Clusters of Galaxies
... effects of the projected distribution along the line of sight of images of galaxies at various distances, of galaxies belonging to clusters centered outside the photograph, and of galaxi[r] ...
169
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
Galaxies and the Universe
... Perhaps the most convincing evi- dence for the existence of considerable intergalactic mass is furnished by the internal motions in some clusters or groups of galaxies, like the central [r] ...
9
DDO 216 A1: a central globular cluster in a low luminosity transition type galaxy
... Support for this work was provided by NASA through grant no. HST GO-13768 from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS5-26555. M.B.-K. acknowledges support from ...
12
Evidence for Non-stellar Rest-frame Near-IR Emission Associated with Increased Star Formation in Galaxies at z ~ 1
... matched galaxies in our sample. Blue dots show NIR min galaxies and red dots NIR excess ...star-forming galaxies and quiescent ...quiescent galaxies out of the unmatched sample of 1454 ...
6
School Desegregation, Law and Order, and Litigating Social Justice in Alabama, 1954 1973
... onto the black hole, large amounts of energy are produced as a result of viscous heating, which increases in intensity as the matter spirals toward the SMBH. Through processes which are still under investigation, large ...
298
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