Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.220..949t&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 220, June 15, 1986, p. 949-969.
Astronomy and Astrophysics
Astrophysics
54
Cooling, Cooling Flows (Astrophysics), Cosmic Gases, Elliptical Galaxies, Emission Spectra, Gas Temperature, X Ray Spectra, Astronomical Models, Brightness Distribution, Dark Matter, Galactic Nuclei, Stellar Evolution, Stellar Mass Ejection
Scientific paper
NGC 4472 is shown to contain a large quantity (10 to the 10th solar mass) of X-ray-emitting gas which is cooling and flowing into the center. The binding of this hot gas in the outer regions of the galaxy requires a substantial halo, (3.5 + or 0.8) x 10 to the 10th (T/10 to the 7th K) solar mass/kpc, of dark matter. A one-phase model is developed for the cooling flow in NGC 4472 and compared with X-ray surface-brightness profiles. It is found that the supernova rate must be less than 0.00013/yr (10 to the 10th solar luminosity)- one twentieth of that given by Tamman (1974), that much of the mass lost from stars via winds or planetary nebulae is confined by the hot phase and rapidly condenses to form new stars, and that mass cools out of the hot phase at a rate of about 0.5 solar mass/yr and does so over the whole galaxy not just in the central regions. Some of this gas is supplied by an outer reservoir or intragroup medium.
No associations
LandOfFree
A cooling flow in the giant, elliptical galaxy NGC 4472 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A cooling flow in the giant, elliptical galaxy NGC 4472, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A cooling flow in the giant, elliptical galaxy NGC 4472 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1833829