Results 21 to 30 of about 7,925 (170)

Dwarf Galaxies and Cluster Environments

open access: yesProceedings of the International Astronomical Union, 2018
AbstractWe report an investigation of the properties of dwarf galaxies (Mr < -15) inside 26 clusters at z = 0.15 – 0.25, using the X-ray data from the Chandra archive, and optical images taken with Subaru Suprime-Cam. Our results include: 1. Investigation of the dwarf galaxy density distribution is sensitive to the background galaxies and the choice
Hashimoto, Y., Henry, J., Boehringer, H.
openaire   +3 more sources

Observing the Galaxy Environment of QSOs [PDF]

open access: yes, 1997
2 pages, 1 figure (postscript), Latex (uses lamuphys.sty). To appear in the proceedings of the ESO/IAC Conference on 'Quasar Hosts' held in Puerta de la Cruz, Tenerife, Spain, Sep.
J\\"ager, Klaus   +2 more
openaire   +2 more sources

The interstellar environment of our galaxy [PDF]

open access: yesReviews of Modern Physics, 2001
We review the current knowledge and understanding of the interstellar medium of our galaxy. We first present each of the three basic constituents - ordinary matter, cosmic rays, and magnetic fields - of the interstellar medium, laying emphasis on their physical and chemical properties inferred from a broad range of observations.
openaire   +2 more sources

The Environments of Markarian Galaxies [PDF]

open access: yesInternational Astronomical Union Colloquium, 1990
The extensively studied Markarian sample of 1500 ultraviolet excess galaxies contains many Seyfert, starburst, and peculiar galaxies. Using the 20 minute V plates obtained for the construction of the Hubble Space Telescope Guide Star Catalog, we have investigated the morphologies of the Markarian galaxies and the environments in which they are located.
John W. MacKenty   +2 more
openaire   +1 more source

COSMOS2020: Discovery of a Protocluster of Massive Quiescent Galaxies at z = 2.77

open access: yesThe Astrophysical Journal Letters, 2023
Protoclusters of galaxies have been found in the last quarter-century. However, most of them have been found through the overdensity of star-forming galaxies, and there have been no known structures identified by more than two spectroscopically confirmed
Kei Ito   +11 more
doaj   +1 more source

Gas-phase Metallicity of Local Active Galactic Nuclei in the GASP and MaNGA Surveys: The Role of Ram Pressure Stripping

open access: yesThe Astrophysical Journal, 2023
Growing evidence in support of a connection between active galactic nuclei (AGN) activity and the ram pressure stripping (RPS) phenomenon has been found both observationally and theoretically in the past decades.
Giorgia Peluso   +7 more
doaj   +1 more source

LENTICULAR GALAXIES AND THEIR ENVIRONMENTS

open access: yesThe Astrophysical Journal, 2009
Astrophysical Journal, in ...
openaire   +3 more sources

The gaseous environments of radio galaxies [PDF]

open access: yesNew Astronomy Reviews, 2002
X-ray emission traces the gaseous environments of radio sources. The medium must be present for jet confinement, but what are its influence on jet fuelling, dynamics, propagation, and disruption? The observational situation is both complicated and enriched by radio sources being multi-component X-ray emitters, with several possible regions of non ...
openaire   +2 more sources

VERTICO. VII. Environmental Quenching Caused by the Suppression of Molecular Gas Content and Star Formation Efficiency in Virgo Cluster Galaxies

open access: yesThe Astrophysical Journal, 2023
We study how environment regulates the star formation cycle of 33 Virgo Cluster satellite galaxies on 720 pc scales. We present the resolved star-forming main sequence for cluster galaxies, dividing the sample based on their global H i properties and ...
Toby Brown   +22 more
doaj   +1 more source

FAST-ASKAP Synergy: Quantifying Coexistent Tidal and Ram Pressure Strippings in the NGC 4636 Group

open access: yesThe Astrophysical Journal, 2023
Combining new H i data from a synergetic survey of Australian Square Kilometre Array Pathfinder (ASKAP) Widefield ASKAP L -band Legacy All-sky Blind surveY and Five-hundred-meter Aperture Spherical radio Telescope with the Arecibo Legacy Fast ALFA data ...
Xuchen Lin   +29 more
doaj   +1 more source

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