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Marked Statistics and the Environmental Dependence of Galaxy Formation

Skibba, Ramin Adrian (2006) Marked Statistics and the Environmental Dependence of Galaxy Formation. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Many have used the two-point correlation function to study the clustering of galaxies as a function of their properties, such as luminosity, color, and stellar mass. We explore the technique of `marked' correlations, in which clustering is measured with galaxies weighted by a particular property or `mark'. Marked clustering statistics identify and quantify how galaxy properties are correlated with their environment. We present marked correlation analyses in the framework of the dark matter halo model, in which all environmental correlations are due to the correlation of the masses and formation histories of halos with their environment. We perform marked correlation analyses of galaxy luminosity, color, stellar mass, metallicity, and star formation rate in the Sloan Digital Sky Survey and the Millennium Run Simulation. We also analyze luminosity-marked correlations of galaxies in groups and clusters. Our measurements show that luminous, red, massive, metal-rich, and passively star forming galaxies tend to be located in denser environments than fainter, bluer, less massive, metal-poor, and actively star forming galaxies. Our marked correlation measurements also show how these environmental correlations vary as a function of scale. Our halo-model analyses show that the environmental dependence of luminosity and stellar mass of SDSS galaxies is primarily driven by the environmental dependence of halo mass.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Skibba, Ramin
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairSheth, Ravi
Committee CoChairConnolly, Andrew
Committee MemberJain,
Committee MemberTurnshek, Davidturnshek@quasar.phyast.pitt.eduTURNSHEK
Committee MemberPaolone,
Date: 6 October 2006
Date Type: Completion
Defense Date: 24 July 2006
Approval Date: 6 October 2006
Submission Date: 14 August 2006
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Physics
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: dark matter halos; galaxy clustering; galaxy evolution; galaxy formation; halo model; large scale structure; marked statistics
Other ID:, etd-08142006-164406
Date Deposited: 10 Nov 2011 19:59
Last Modified: 15 Nov 2016 13:49


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