Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.225..939n&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 225, April 15, 1987, p. 939-945.
Astronomy and Astrophysics
Astrophysics
17
Cooling Flows (Astrophysics), Elliptical Galaxies, Galactic Structure, Interstellar Gas, Star Formation, Virgo Galactic Cluster, X Ray Sources, Gas Cooling, Luminosity, Optical Emission Spectroscopy
Scientific paper
Malin (1981) has produced a very deep photograph of M86 in which the outer isophotes of the galaxy are distorted. It is shown that the distortion is consistent with the presence of two regions of excess emission from M86 with a total luminosity in excess of about 10 to the 8th solar luminosities. The unusual X-ray morphology of M86 has been interpreted as evidence that this galaxy contains a hot corona which is being stripped by ram pressure. The excess optical emission is associated with features in the X-ray emission from M86, and it is proposed that the best model for it is as star formation due to cooling in the hot gas that is being stripped. Other models are discussed briefly. If the excess emission is due to star formation then it occurs under conditions very similar to those of a cooling flow, but offset from the center of the galaxy. Thus M86 may provide a unique opportunity to investigate star formation in a cooling flow environment.
Carter David
Nulsen Paul E. J.
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