LATIS: The Ly$\alpha$ Tomography IMACS Survey

25 Feb 2020 Newman Andrew B. Rudie Gwen C. Blanc Guillermo A. Kelson Daniel D. Rhoades Sunny Hare Tyson Pérez Victoria Benson Andrew J. Dressler Alan Gonzalez Valentino Kollmeier Juna A. Konidaris Nicholas P. Mulchaey John S. Rauch Michael Fèvre Olivier Le Lemaux Brian C. Cucciati Olga Lilly Simon J.

We introduce LATIS, the Ly$\alpha$ Tomography IMACS Survey, a spectroscopic survey at Magellan designed to map the z=2.2-2.8 intergalactic medium (IGM) in three dimensions by observing the Ly$\alpha$ forest in the spectra of galaxies and QSOs. Within an area of 1.7 deg${}^2$, we will observe approximately half of $\gtrsim L^*$ galaxies at z=2.2-3.2 for typically 12 hours, providing a dense network of sightlines piercing the IGM with an average transverse separation of 2.5 $h^{-1}$ comoving Mpc (1 physical Mpc)... (read more)

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Categories


  • COSMOLOGY AND NONGALACTIC ASTROPHYSICS
  • ASTROPHYSICS OF GALAXIES