Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..666..171m&link_type=abstract
THE EMERGENCE OF COSMIC STRUCTURE: Thirteenth Astrophysics Conference. AIP Conference Proceedings, Volume 666, pp. 171-181 (200
Astronomy and Astrophysics
Astrophysics
2
Small And Compact Galaxy Groups, Origin And Formation Of The Universe
Scientific paper
The entropy in the hot x-ray gas in groups of galaxies is a fossil of the process of galaxy formation. The amount of entropy in these low mass systems considerably exceeds that predicted from structure formation models. To explain these results requires ``extra'' energy which is a relic of the process of star formation and active galaxy heating. We present new XMM results on the entropy and entropy profiles. These results are inconsistent with pre-heating scenarios which have been developed to explain the entropy floor in groups but are broadly consistent with models of structure formation which include the effects of heating and/or the cooling of the gas. The total entropy in these systems provides a strong constraint on all models of galaxy and group formation, and on the poorly defined feedback process which controls the transformation of gas into stars and thus the formation of structure in the universe.
No associations
LandOfFree
The Entropy in Groups-A Clue to Galaxy Formation 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 The Entropy in Groups-A Clue to Galaxy Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Entropy in Groups-A Clue to Galaxy Formation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1370599