Results 11 to 20 of about 3,423,233 (292)

Active Galaxies

open access: yes
This resource covers Seyfert galaxies, radio galaxies, BL Lacertae (BL Lac) objects, quasars, supermassive black holes, determining masses in galactic centers using the virial theorem, and a model for active galactic ...
openaire   +2 more sources

JWST Insight into a Lensed HST-dark Galaxy and Its Quiescent Companion at z = 2.58

open access: yesThe Astrophysical Journal Letters, 2023
Using the novel James Webb Space Telescope (JWST)/NIRCam observations in the A2744 field, we present a first spatially resolved overview of a Hubble Space Telescope (HST)-dark galaxy, spectroscopically confirmed at z = 2.58 with magnification μ ≈ 1.9 ...
Vasily Kokorev   +15 more
doaj   +1 more source

Galaxy activity in merging binary galaxy clusters [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
We present the results of a study of galaxy activity in two merging binary clusters (A168 and A1750) using the Sloan Digital Sky Survey (SDSS) data supplemented with the data in the literature. We have investigated the merger histories of A168 and A1750 by combining the results from a two-body dynamical model and X-ray data.
Hwang, Ho Seong, Lee, Myung Gyoon
openaire   +2 more sources

Outflows in the Disks of Active Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2019
Abstract Recent advances in observations have provided a wealth of measurements of the expansions of outflows in galactic disks out to large radii in a variety of galactic hosts. To provide an updated baseline for the interpretation of such data, and to assess to what extent the present status of the modeling is consistent with the ...
N. Menci   +7 more
openaire   +5 more sources

Janus kinase 2 inhibition by pacritinib as potential therapeutic target for liver fibrosis

open access: yesHepatology, EarlyView., 2022
Diagram of the activation of the profibrotic and procontractile Janus kinase 2 (JAK2)/Ras homolog family member A/Rho‐kinase pathway and the inhibition of phosphorylated JAK2 by pacritinib to inhibit hepatic stellate cell activity. Abstract Background and Aims Janus kinase 2 (JAK2) signaling is increased in human and experimental liver fibrosis with ...
Sandra Torres   +21 more
wiley   +1 more source

Testing the Radio-selection Method of Dual Active Galactic Nuclei in the Stripe 82 Field

open access: yesThe Astrophysical Journal, 2023
We test the merger-induced dual active galactic nuclei (dAGNs) paradigm using a sample of 35 radio galaxy pairs from the Sloan Digital Sky Survey Stripe 82 field.
Arran C. Gross   +5 more
doaj   +1 more source

Active Galaxies in the UV

open access: yesAstrophysics and Space Science, 2006
29 pages, 13 figures, Ap&SS in ...
Kollatschny, Wolfram, Ting-Gui, Wang
openaire   +3 more sources

The distribution and lifetime of powerful radio galaxies as a function of environment and redshift

open access: yesScientific Reports, 2018
Correlations between jet power and active time for z 
David Garofalo   +2 more
doaj   +1 more source

Early assembly of the most massive galaxies [PDF]

open access: yes, 2009
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins   +53 more
core   +1 more source

CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3

open access: yesThe Astrophysical Journal, 2023
We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to ...
Bren E. Backhaus   +10 more
doaj   +1 more source

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