scholarly journals A Hubble Space Telescope Imaging Survey of Low-redshift Swift-BAT Active Galaxies*

2021 ◽  
Vol 256 (2) ◽  
pp. 40
Author(s):  
Minjin Kim ◽  
Aaron J. Barth ◽  
Luis C. Ho ◽  
Suyeon Son
Keyword(s):  
Hubble Space Telescope ◽  
Active Galaxies ◽  
Space Telescope

scholarly journals Galaxies with Binary Nuclei

2013 ◽  
Vol 9 (S304) ◽  
pp. 363-370
Author(s):  
Yervant Terzian ◽  
Edward Khachikian
Keyword(s):  
Hubble Space Telescope ◽  
Radio Galaxies ◽  
Active Galaxies ◽  
Emission Lines ◽  
Special Astrophysical Observatory ◽  
Host Galaxies ◽  
Strong Emission ◽  
Space Telescope ◽  
Byurakan Astrophysical Observatory ◽  
The Common

AbstractIt is known that among active galaxies (AG) with strong emission lines (UV-galaxies, Sy1 and Sy2, Markarian and Kazarian galaxies, radio-galaxies, QSOs host galaxies and so on) there is a large percentage of objects with double and multiple (or complex) nuclei. The common sizes of these nuclei are of the order of a few hundred parsecs or kiloparsecs. We shall discuss the results of morphological and spectroscopic observations of a number of “active galaxies” carried out with the 5m Palomar telescope, 2.6m telescope of Ambartsumian Byurakan Astrophysical Observatory, 6m telescope of Special Astrophysical Observatory in Russia, and newer Hubble Space Telescope data.

scholarly journals Hubble Space Telescope Observations of AGN

1994 ◽  
Vol 159 ◽  
pp. 83-104 ◽  
Author(s):  
F. Macchetto
Keyword(s):  
Dynamic Range ◽  
Hubble Space Telescope ◽  
Active Galaxies ◽  
Broad Line ◽  
Galaxy Mergers ◽  
Space Telescope ◽  
Extended Dynamic

Only little more than three years have passed since the launch of the Hubble Space Telescope (HST) and the wealth of results produced by astronomers using it, have already made fundamental contributions to our understanding of a variety of astrophysical processes. A considerable number of investigations have been, and are being, devoted to the study of the whole gamut of problems associated with activity in galaxies. These range from the very largest scales, namely those applicable to the study of the optical jets and galaxy mergers (10–100 kpc) to the smallest scales (1–10 pc) relevant to investigate the broad-line regions and the very center of the active galaxies. In all cases, the high-spatial resolutions, extended dynamic range and ultraviolet response, has made possible the study of a number of objects with a detail impossible without the HST.

scholarly journals Excitation Mechanism of Extended Emission-Line Regions in Active Galaxies

1997 ◽  
Vol 159 ◽  
pp. 386-389
Author(s):  
Ian Evans ◽  
Anuradha Koratkar ◽  
Mark Allen ◽  
Zlatan Tsvetanov ◽  
Michael Dopita
Keyword(s):  
Emission Line ◽  
Hubble Space Telescope ◽  
Optical Emission ◽  
Active Galaxies ◽  
Emission Lines ◽  
Uv Spectrophotometry ◽  
Excitation Mechanism ◽  
Space Telescope ◽  
Shock Models ◽  
Extended Emission

AbstractPhotoionization and shock models of the extended emissionline regions (EELRs) in active galaxies demonstrate that the optical emission lines alone are a poor discriminant of the excitation mechanism. Combining optical and UV data provides a discriminant between nuclear photoionization and autoionizing shock models. Hubble Space Telescope UV spectrophotometry of two Seyferts suggests that the EELRs in these objects are probably photoionized by the nucleus.

An AI scheduling environment for the Hubble Space Telescope

1991 ◽  
Author(s):  
JEFFREY SPONSLER ◽  
MARK JOHNSTON ◽  
GLENN MILLER ◽  
ANTHONY KRUEGER ◽  
MICHAEL LUCKS ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope
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