X-ray cooling flows in isolated elliptical galaxies

Details X-ray cooling flows in isolated elliptical galaxies X-ray cooling flows in isolated elliptical galaxies

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.208..185n&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 208, May 1, 1984, p. 185-195. Research supported by the

Astronomy and Astrophysics

Astrophysics

167

Cooling Flows (Astrophysics), Elliptical Galaxies, Stellar Mass Ejection, X Ray Sources, Angular Momentum, Cooling, Galactic Nuclei, Gas Flow, Heao 2

Scientific paper

X-ray observations of three isolated elliptical galaxies are presented. Much of their X-ray luminosity is probably due to gas for which the cooling time is far less than a Hubble time. Wind models for the X-ray emission require excessive mass loss. A cooling flow is considered and found to give reasonable agreement with the stellar mass loss integrated over the galaxy. About 1 M_sun; yr-1 is being cycled through such flow in NGC 1395. Cooling flows in elliptical galaxies, and possibly also the bulges of spiral galaxies, may cause the formation of H I excretion discs, continue the formation of the galaxy at small radii and help to power galactic nuclei.

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