Semi-analytic forecasts for Roman – the beginning of a new era of deep-wide galaxy surveys

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dc.contributor.authorYung, L.Y. Aaron
dc.contributor.authorSomerville, Rachel S.
dc.contributor.authorDav´e, Romeel
dc.date.accessioned2023-03-15T07:31:19Z
dc.date.available2023-03-15T07:31:19Z
dc.date.issued2023
dc.description.abstractThe Nancy Grace Roman Space Telescope, NASA’s next flagship observatory, will redefine deep-field galaxy survey with a field of view two orders of magnitude larger than Hubble and an angular resolution of matching quality. These future deep-wide galaxy surveys necessitate new simulations to forecast their scientific output and to optimise survey strategies. In this work, we present five realizations of 2-deg2 lightcones, containing a total of & 25 million simulated galaxies with −16 & MUV & −25 spanning z ∼ 0 to 10. This dataset enables a new set of experiments with the impacts of survey size on the derived galaxy formation and cosmological constraints. The intrinsic and observable galaxy properties are predicted using a well-established, physics-based semi-analytic modelling approach. We provide forecasts for number density, cosmic SFR, field-to-field variance, and angular two-point correlation functions, and demonstrate how the future wide-field surveys will be able to improve these measurements relative to current generation surveys. We also present a comparison between these lightcones and others that have been constructed with empirical models.en_US
dc.identifier.citationYung, L. Y. A. et al. (2023). Semi-analytic forecasts for Roman – the beginning of a new era of deep-wide galaxy surveys. Monthly Notices of the Royal Astronomical Society, 519(1), 1578-1600. 10.1093/mnras/stac3595en_US
dc.identifier.issn1365-2966
dc.identifier.uri10.1093/mnras/stac3595
dc.identifier.urihttp://hdl.handle.net/10566/8583
dc.language.isoenen_US
dc.publisherOxford University Pressen_US
dc.subjectAstronomyen_US
dc.subjectPhysicsen_US
dc.subjectGalaxiesen_US
dc.subjectNASAen_US
dc.subjectCosmologyen_US
dc.titleSemi-analytic forecasts for Roman – the beginning of a new era of deep-wide galaxy surveysen_US
dc.typeArticleen_US

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