Understanding the Astrophysics of Galaxy Evolution: the role of spectroscopic surveys in the next decade
Eric Bell, Marc Davis, Arjun Dey, Pieter van Dokkum, Richard Ellis, Daniel Eisenstein, Martin Elvis, Sandra Faber, Carlos Frenk, Reinhard Genzel, Jenny Greene, … 展开作者
Eric Bell, Marc Davis, Arjun Dey, Pieter van Dokkum, Richard Ellis, Daniel Eisenstein, Martin Elvis, Sandra Faber, Carlos Frenk, Reinhard Genzel, Jenny Greene, Jim Gunn, Guinevere Kauffmann, Jill Knapp, Mariska Kriek, James Larkin, Claudia Maraston, Kirpal Nandra, Jerry Ostriker, Francisco Prada, David Schlegel, Michael Strauss, Alex Szalay, Christy Tremonti, Martin White, Simon White, Rosie Wyse
Over the last decade optical spectroscopic surveys have characterized the low redshift galaxy population and uncovered populations of star-forming galaxies back to z ~ 7. This work has shown that the primary epoch of galaxy building and black hole growth occurs at redshifts of 2 to 3. The establishment of the concordance LCDM cosmology shifted the focus of galaxy population studies from constraining cosmological parameters to characterizing the processes which regulate the formation and evolution of galaxies.In the next decade, high redshift observers will attempt to formulate a coherent evolutionary picture connecting galaxies in the high redshift Universe to galaxies today. In order to link galaxy populations at different redshifts, we must not only characterize their evolution in a systematic way, we must establish which physical processes are responsible for it. Considerable progress has already been made in understanding how galaxies evolved from z ~ 1 to the present day. Large spectroscopic surveys in the near infrared are required to push these studies back towards the main epoch of galaxy building. Only then will we understand the full story of the formation of L* galaxies like our own Milky Way. A large near-IR spectroscopic survey will also provide the calibration needed to avoid systematics in the large photometric programs proposed to study the nature of dark matter and dark energy. We provide an outline design for a multi-object 0.4 to 1.8 micron spectrograph, which could be placed on an existing telescope, and which would allow a full characterization of the galaxy population out to z ~ 2. We strongly recommend a serious further study to design a real instrument, which will be required for galaxy formation studies to advance to the next frontier.
Modeling Gravitational Wave Bias from 3D Power Spectra of Spectroscopic Surveys
Perimeter Institute for Theoretical Physics（Perimeter理论物理研究所）；University of Waterloo（滑铁卢大学）；Waterloo Centre for Astrophysics, University of Waterloo（滑铁卢大学滑铁卢天体物理中心）；Queen’s University（女王大学）；Arthur B. McDonald Canadian Astroparticle Physics Research Institute（Arthur B. McDonald加拿大亚原子物理研究所）；Tata Institute of Fundamental Research（塔塔基础研究所）
The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
