From the Intergalactic to the Interstellar Scales -- EQUALS: a High-resolution Legacy Survey of Gas in the Distant Universe Using ESPRESSO
Trystyn Berg, Valentina D'Odorico, Elisa Boera, Giorgio Calderone, Rodrigo Cuellar, Guido Cupani, Stefano Cristiani, Simona Di Stefano, Andrea Grazian, Francesco Guarneri, Vid Ir\v{s}i\v{c}, Sebastian Lopez, Dinko Milakovi\'c, Pasquier Noterdaeme, Luca Pasquini, Matteo Viel

TL;DR
The EQUALS survey uses ESPRESSO's high-resolution spectroscopy to study the distant universe through quasar absorption lines, aiming to answer fundamental questions about cosmic evolution, dark matter, and early stellar populations.
Contribution
This paper introduces the EQUALS survey, leveraging ESPRESSO's capabilities to provide high-quality spectra for probing the early universe and testing cosmological models.
Findings
High-resolution spectra constrain dark matter properties at small scales.
Measurements of intergalactic medium temperature at z ~ 4.
Quantification of stellar nucleosynthetic yields in the early universe.
Abstract
Understanding how the Universe evolved from diffuse primordial gas into the rich cosmic web we observe today is one of the great challenges of modern astrophysics. Quasar absorption lines - the imprints left by intervening gas on the light from distant quasars - provide key diagnostics of many aspects of this investigation, ranging from fundamental physics to cosmology and galaxy formation. The unprecedented combination of extremely precise wavelength calibration, high spectral resolution and high sensitivity of the Echelle SPectrograph for Rocky Exoplanet and Stable Spectroscopic Observations (ESPRESSO) has finally enabled observations that will further constrain both state-of-the-art cosmological simulations of galaxy evolution and theoretical stellar nucleosynthetic yields. In this article, we present the ESPRESSO Quasar Absorption Line Survey (EQUALS), an ESO Large Programme,…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Astronomy and Astrophysical Research · Electrical and Electromagnetic Research
