Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275l..27h&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 275, Dec. 15, 1983, p. L27-L31. Research supported
Astronomy and Astrophysics
Astrophysics
53
Cooling Flows (Astrophysics), Galactic Clusters, Interacting Galaxies, Interstellar Matter, X Ray Sources, Galactic Nuclei, Luminosity, Mass Flow, Spiral Galaxies
Scientific paper
Morphological evidence is presented (in the form of 3-A-bandpass Fabry-Perot images made with a CCD camera) that the two bright emission-line systems seen toward the galaxy NGC 1275 arise from a high-velocity impact of a foreground galaxy upon the accretion flow of gas cooling in the center of the Perseus cluster. The uniquely high optical-line luminosity of NGC 1275, in comparison with other central galaxies in clusters observed to have cooling flows, may be explained by energy deposited during the collision. Using additional information from 21-cm and extinction measurements, a rough model of the interaction is developed. Problems remain with this model - such as the likelihood of a gas-rich system penetrating to the cluster center. The kinematic structure of the optically emitting gas shows additional complex structure near the nucleus of NGC 1275.
Cowie Lennox L.
Hu Esther M.
Jenkins Edward B.
Kaaret Phil
Roesler Fred L.
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