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30 papers · 2 filters
Very Small-Scale Clustering and Merger Rate of Luminous Red Galaxies
Morad Masjedi, David W. Hogg, Richard J. Cool +8
We present the small-scale (0.01<r<8 h^{-1} Mpc) projected correlation function w_p(r_p) and real space correlation function xi(r) of 24520 luminous early-type galaxies from the Sl…
Galaxies in SDSS and DEEP2: a quiet life on the blue sequence?
Michael R. Blanton
In the six billion years between redshifts z=1 and z=0.1, galaxies change due to the aging of their stellar populations, the formation of new stars, and mergers with other galaxies…
Constraining the Projected Radial Distribution of Galactic Satellites with the Sloan Digital Sky Survey
Jacqueline Chen, Andrey V. Kravtsov, Francisco Prada +5
We use the Sloan Digital Sky Survey (SDSS) spectroscopic sample to constrain the projected radial distribution of satellites around isolated ~ L* galaxies. We employ mock galaxy ca…
What best constrains galaxy evolution in the local Universe?
David W. Hogg
After a polemical introduction about the proper activity of an astrophysicist facing a dominant theoretical model and many Tb of highly informative data, I review a few recent resu…
Super-acceleration as Signature of Dark Sector Interaction
Subinoy Das, Pier Stefano Corasaniti, Justin Khoury
We show that an interaction between dark matter and dark energy generically results in an effective dark energy equation of state of w<-1. This arises because the interaction alter…
On measuring the covariance matrix of the nonlinear power spectrum from simulations
A. J. S. Hamilton, C. D. Rimes, R. Scoccimarro
We show how to estimate the covariance of the power spectrum of a statistically homogeneous and isotropic density field from a single periodic simulation, by applying a set of weig…