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14 papers · 1 filter
The Metallicity Distribution Functions of SEGUE G and K dwarfs: Constraints for Disk Chemical Evolution and Formation
Katharine J. Schlesinger, Jennifer A. Johnson, Constance M. Rockosi +14
We present the metallicity distribution function (MDF) for 24,270 G and 16,847 K dwarfs at distances from 0.2 to 2.3 kpc from the Galactic plane, based on spectroscopy from the Slo…
The complementarity of the redshift drift
Bruno Moraes, David Polarski
We derive some basic equations related to the redshift drift and we show how some dark energy (DE) properties can be retrieved from it. We consider in particular three kinds of DE…
Cosmological forecasts from photometric measurements of the angular correlation function
F. Sobreira, F. de Simoni, R. Rosenfeld +3
We study forecasts for the accuracy of the determination of cosmological parameters from future large scale photometric surveys obtained using the full shape of the 2-point galaxy…
Detailed Abundances of the Solar Twins 16 Cygni A and B: Constraining Planet Formation Models
S. C. Schuler, K. Cunha, V. V. Smith +4
Results of a detailed abundance analysis of the solar twins 16 Cyg A and 16 Cyg B based on high-resolution, high signal-to-noise ratio echelle spectroscopy are presented. 16 Cyg B…
Ameliorating Systematic Uncertainties in the Angular Clustering of Galaxies: A Study using SDSS-III
Ashley J Ross, Shirley Ho, Antonio J. Cuesta +29
We investigate the effects of potential sources of systematic error on the angular and photometric redshift, z_phot, distributions of a sample of redshift 0.4 < z < 0.7 massive gal…
The XMM Cluster Survey: Optical analysis methodology and the first data release
Nicola Mehrtens, A. Kathy Romer, E. J. Lloyd-Davies +34
The XMM Cluster Survey (XCS) is a serendipitous search for galaxy clusters using all publicly available data in the XMM-Newton Science Archive. Its main aims are to measure cosmolo…