Testing gravity on large scales. The skewness of the galaxy distribution at z~1

C. Marinoni , L. Guzzo , A. Cappi , O. Le Fevre , A. Mazure , B. Meneux , A. Pollo , A. Iovino

show 49 more authors

H.J. McCracken R. Scaramella S. de la Torre J. M. Virey D. Bottini B. Garilli V. Le Brun D. Maccagni J.P. Picat M. Scodeggio L. Tresse G. Vettolani A. Zanichelli C. Adami S. Arnouts S. Bardelli M. Bolzonella S. Charlot P. Ciliegi T. Contini S. Foucaud P. Franzetti I. Gavignaud O. Ilbert F. Lamareille B. Marano G. Mathez R. Merighi S. Paltani R. Pell\`o L. Pozzetti M. Radovich D. Vergani G. Zamorani E. Zucca U. Abbas M. Bondi A. Bongiorno J. Brinchmann A. Buzzi O. Cucciati L. de Ravel L. Gregorini Y. Mellier P. Merluzzi E. Perez-Montero P. Taxil S. Temporin C.J. Walcher

Authors on Pith no claims yet

classification 🌌 astro-ph

keywords galaxydistributionintervalredshiftskewnesstheoryaccountingavoid

0 comments

read the original abstract

We study the evolution of the low-order moments of the galaxy overdensity distribution over the redshift interval 0.7<z<1.5. We find that the variance and the normalized skewness evolve over this redshift interval in a way that is remarkably consistent with predictions of first- and second-order perturbation theory. This finding confirms the standard gravitational instability paradigm over nearly 9 Gyrs of cosmic time and demonstrates the importance of accounting for the non-linear component of galaxy biasing to avoid disagreement between theory and observations.

This paper has not been read by Pith yet.

Testing gravity on large scales. The skewness of the galaxy distribution at z~1

discussion (0)