X-ray studies of galactic and intergalactic gas in the Pegasus I cluster

Details X-ray studies of galactic and intergalactic gas in the Pegasus I cluster X-ray studies of galactic and intergalactic gas in the Pegasus I cluster

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...304..312c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 304, May 1, 1986, p. 312-317.

Astronomy and Astrophysics

Astrophysics

20

Galactic Clusters, Heao 2, Intergalactic Media, X Ray Astronomy, X Ray Sources, Cooling Flows (Astrophysics), Elliptical Galaxies, Luminosity

Scientific paper

Observations of Pegasus I with the Einstein Observatory IPC reveal hot gas in a low-density intergalactic medium and in a galactic medium within each of the dominant elliptical galaxies NGC 7619 and NGC 7626. The galaxies have X-ray luminosities of 8 and 3×1041ergs s-1 respectively, temperatures of ≡107K, mean gas densities of ≡10-3cm-3 and gas masses of ≡1010M_sun;. The intergalactic gas has a luminosity of 1×1042ergs s-1, a density of ≡2×10-4cm-3, a mass of ≡4×1011M_sun;, and a temperature of ≡107K.

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