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Constraints on Elliptical Galaxy Formation from Dry Mergers

Published online by Cambridge University Press:  01 August 2006

Julia M. Comerford ,
Eliot Quataert  and
Chung-Pei Ma
Julia M. Comerford
Affiliation:
Astronomy Department, 601 Campbell Hall, University of California, Berkeley, CA 94720 email: [email protected]
Eliot Quataert
Affiliation:
Astronomy Department, 601 Campbell Hall, University of California, Berkeley, CA 94720 email: [email protected]
Chung-Pei Ma
Affiliation:
Astronomy Department, 601 Campbell Hall, University of California, Berkeley, CA 94720 email: [email protected]
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Recent observations suggest that dissipationless mergers of elliptical galaxies build up the population of massive early-type galaxies (Bell et al. 2004; Faber et al. 2006). This type of merger is observed in galaxy clusters (Tran et al. 2005) and predicted by semi-analytic models which find mass assembly times significantly later than star-formation times for the most massive elliptical galaxies (de Lucia & Blaizot 2006). Here, we use a semi-analytic model of minor mergers of dark matter halos to examine the role of dry minor mergers in elliptical galaxy formation.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 195
Copyright
Copyright © International Astronomical Union 2007

References

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