Namitha Kizhuprakkat
AuriDESI: mock catalogues for the DESI Milky Way Survey
Kizhuprakkat, Namitha; Cooper, Andrew P; Riley, Alexander H; Koposov, Sergey E; Aguilar, Jessica Nicole; Ahlen, Steven; Allende Prieto, Carlos; Brooks, David; Claybaugh, Todd; Dawson, Kyle; de la Macorra, Axel; Doel, Peter; Forero-Romero, Jaime E; Frenk, Carlos; Gaztañaga, Enrique; Gnedin, Oleg Y; Grand, Robert J J; Gontcho A Gontcho, Satya; Honscheid, Klaus; Kehoe, Robert; Landriau, Martin; Manera, Marc; Meisner, Aaron; Miquel, Ramon; Nie, Jundan; Prada, Francisco; Rezaie, Mehdi; Rossi, Graziano; Sanchez, Eusebio; Schubnell, Michael; Seo, Hee-Jong; Tarlé, Gregory; Valluri, Monica; Zhou, Zhimin
Authors
Andrew P Cooper
Dr Alex Riley alexander.riley2@durham.ac.uk
Researcher
Sergey E Koposov
Jessica Nicole Aguilar
Steven Ahlen
Carlos Allende Prieto
David Brooks
Todd Claybaugh
Kyle Dawson
Axel de la Macorra
Peter Doel
Jaime E Forero-Romero
Professor Carlos Frenk c.s.frenk@durham.ac.uk
Professor
Enrique Gaztañaga
Oleg Y Gnedin
Robert J J Grand
Satya Gontcho A Gontcho
Klaus Honscheid
Robert Kehoe
Martin Landriau
Marc Manera
Aaron Meisner
Ramon Miquel
Jundan Nie
Francisco Prada
Mehdi Rezaie
Graziano Rossi
Eusebio Sanchez
Michael Schubnell
Hee-Jong Seo
Gregory Tarlé
Monica Valluri
Zhimin Zhou
Abstract
The Dark Energy Spectroscopic Instrument Milky Way Survey (DESI MWS) will explore the assembly history of the Milky Way by characterizing remnants of ancient dwarf galaxy accretion events and improving constraints on the distribution of dark matter in the outer halo. We present mock catalogues that reproduce the selection criteria of MWS and the format of the final MWS data set. These catalogues can be used to test methods for quantifying the properties of stellar halo substructure and reconstructing the Milky Way’s accretion history with the MWS data, including the effects of halo-to-halo variance. The mock catalogues are based on a phase-space kernel expansion technique applied to star particles in the Auriga suite of six high-resolution lambda-cold dark matter magnetohydrodynamic zoom-in simulations. They include photometric properties (and associated errors) used in DESI target selection and the outputs of the MWS spectral analysis pipeline (radial velocity, metallicity, surface gravity, and temperature). They also include information from the underlying simulation, such as the total gravitational potential and information on the progenitors of accreted halo stars. We discuss how the subset of halo stars observable by MWS in these simulations corresponds to their true content and properties. These mock Milky Ways have rich accretion histories, resulting in a large number of substructures that span the whole stellar halo out to large distances and have substantial overlap in the space of orbital energy and angular momentum.
Citation
Kizhuprakkat, N., Cooper, A. P., Riley, A. H., Koposov, S. E., Aguilar, J. N., Ahlen, S., Allende Prieto, C., Brooks, D., Claybaugh, T., Dawson, K., de la Macorra, A., Doel, P., Forero-Romero, J. E., Frenk, C., Gaztañaga, E., Gnedin, O. Y., Grand, R. J. J., Gontcho A Gontcho, S., Honscheid, K., Kehoe, R., …Zhou, Z. (2024). AuriDESI: mock catalogues for the DESI Milky Way Survey. Monthly Notices of the Royal Astronomical Society, 531(4), 4108-4137. https://doi.org/10.1093/mnras/stae1415
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 3, 2024 |
Online Publication Date | Jun 7, 2024 |
Publication Date | 2024-07 |
Deposit Date | Jul 30, 2024 |
Publicly Available Date | Jul 30, 2024 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 531 |
Issue | 4 |
Pages | 4108-4137 |
DOI | https://doi.org/10.1093/mnras/stae1415 |
Public URL | https://durham-repository.worktribe.com/output/2641082 |
Files
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
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