LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα Clustering
The connection between galaxies and dark matter halos is often quantified using the stellar mass–halo mass (SMHM) relation. Optical and near-infrared imaging surveys have led to a broadly consistent picture of the evolving SMHM relation based on measurements of galaxy abundances and angular correlat...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad0896 |
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| author | Andrew B. Newman Mahdi Qezlou Nima Chartab Gwen C. Rudie Guillermo A. Blanc Simeon Bird Andrew J. Benson Daniel D. Kelson Brian C. Lemaux |
| author_facet | Andrew B. Newman Mahdi Qezlou Nima Chartab Gwen C. Rudie Guillermo A. Blanc Simeon Bird Andrew J. Benson Daniel D. Kelson Brian C. Lemaux |
| author_sort | Andrew B. Newman |
| collection | DOAJ |
| description | The connection between galaxies and dark matter halos is often quantified using the stellar mass–halo mass (SMHM) relation. Optical and near-infrared imaging surveys have led to a broadly consistent picture of the evolving SMHM relation based on measurements of galaxy abundances and angular correlation functions. Spectroscopic surveys at z ≳ 2 can also constrain the SMHM relation via the galaxy autocorrelation function and through the cross-correlation between galaxies and Ly α absorption measured in transverse sight lines; however, such studies are very few and have produced some unexpected or inconclusive results. We use ∼3000 spectra of z ∼ 2.5 galaxies from the Ly α Tomography IMACS Survey (LATIS) to measure the galaxy–galaxy and galaxy–Ly α correlation functions in four bins of stellar mass spanning 10 ^9.2 ≲ M _* / M _⊙ ≲ 10 ^10.5 . Parallel analyses of the MultiDark N -body and ASTRID hydrodynamic cosmological simulations allow us to model the correlation functions, estimate covariance matrices, and infer halo masses. We find that results of the two methods are mutually consistent and broadly accord with standard SMHM relations. This consistency demonstrates that we are able to measure and model Ly α transmission fluctuations δ _F in LATIS accurately. We also show that the galaxy–Ly α cross-correlation, a free by-product of optical spectroscopic galaxy surveys at these redshifts, can constrain halo masses with similar precision to galaxy–galaxy clustering. |
| first_indexed | 2024-03-08T14:45:51Z |
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| id | doaj.art-45d0161b2f3545548295d8d5ceca4527 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-08T14:45:51Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-45d0161b2f3545548295d8d5ceca45272024-01-11T09:50:56ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-0196112710.3847/1538-4357/ad0896LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα ClusteringAndrew B. Newman0https://orcid.org/0000-0001-7769-8660Mahdi Qezlou1https://orcid.org/0000-0001-7066-1240Nima Chartab2https://orcid.org/0000-0003-3691-937XGwen C. Rudie3https://orcid.org/0000-0002-8459-5413Guillermo A. Blanc4https://orcid.org/0000-0003-4218-3944Simeon Bird5https://orcid.org/0000-0001-5803-5490Andrew J. Benson6https://orcid.org/0000-0001-5501-6008Daniel D. Kelson7https://orcid.org/0000-0003-4727-4327Brian C. Lemaux8https://orcid.org/0000-0002-1428-7036Observatories of the Carnegie Institution for Science , 813 Santa Barbara St., Pasadena, CA 91101, USA ; anewman@carnegiescience.eduObservatories of the Carnegie Institution for Science , 813 Santa Barbara St., Pasadena, CA 91101, USA ; anewman@carnegiescience.edu; Department of Physics and Astronomy, University of California Riverside , 900 University Ave., Riverside, CA 92521, USAObservatories of the Carnegie Institution for Science , 813 Santa Barbara St., Pasadena, CA 91101, USA ; anewman@carnegiescience.eduObservatories of the Carnegie Institution for Science , 813 Santa Barbara St., Pasadena, CA 91101, USA ; anewman@carnegiescience.eduObservatories of the Carnegie Institution for Science , 813 Santa Barbara St., Pasadena, CA 91101, USA ; anewman@carnegiescience.edu; Departamento de Astronomía, Universidad de Chile , Camino del Observatorio 1515, Las Condes, Santiago, ChileDepartment of Physics and Astronomy, University of California Riverside , 900 University Ave., Riverside, CA 92521, USAObservatories of the Carnegie Institution for Science , 813 Santa Barbara St., Pasadena, CA 91101, USA ; anewman@carnegiescience.eduObservatories of the Carnegie Institution for Science , 813 Santa Barbara St., Pasadena, CA 91101, USA ; anewman@carnegiescience.eduGemini Observatory, NSF’s NOIRLab , 670 N. A’ohoku Place, Hilo, HI 96720, USA; Department of Physics and Astronomy, University of California , Davis, One Shields Ave., Davis, CA 95616, USAThe connection between galaxies and dark matter halos is often quantified using the stellar mass–halo mass (SMHM) relation. Optical and near-infrared imaging surveys have led to a broadly consistent picture of the evolving SMHM relation based on measurements of galaxy abundances and angular correlation functions. Spectroscopic surveys at z ≳ 2 can also constrain the SMHM relation via the galaxy autocorrelation function and through the cross-correlation between galaxies and Ly α absorption measured in transverse sight lines; however, such studies are very few and have produced some unexpected or inconclusive results. We use ∼3000 spectra of z ∼ 2.5 galaxies from the Ly α Tomography IMACS Survey (LATIS) to measure the galaxy–galaxy and galaxy–Ly α correlation functions in four bins of stellar mass spanning 10 ^9.2 ≲ M _* / M _⊙ ≲ 10 ^10.5 . Parallel analyses of the MultiDark N -body and ASTRID hydrodynamic cosmological simulations allow us to model the correlation functions, estimate covariance matrices, and infer halo masses. We find that results of the two methods are mutually consistent and broadly accord with standard SMHM relations. This consistency demonstrates that we are able to measure and model Ly α transmission fluctuations δ _F in LATIS accurately. We also show that the galaxy–Ly α cross-correlation, a free by-product of optical spectroscopic galaxy surveys at these redshifts, can constrain halo masses with similar precision to galaxy–galaxy clustering.https://doi.org/10.3847/1538-4357/ad0896Galaxy dark matter halosLyα forestLyman-break galaxies |
| spellingShingle | Andrew B. Newman Mahdi Qezlou Nima Chartab Gwen C. Rudie Guillermo A. Blanc Simeon Bird Andrew J. Benson Daniel D. Kelson Brian C. Lemaux LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα Clustering The Astrophysical Journal Galaxy dark matter halos Lyα forest Lyman-break galaxies |
| title | LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα Clustering |
| title_full | LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα Clustering |
| title_fullStr | LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα Clustering |
| title_full_unstemmed | LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα Clustering |
| title_short | LATIS: Constraints on the Galaxy–Halo Connection at z ∼ 2.5 from Galaxy–Galaxy and Galaxy–Lyα Clustering |
| title_sort | latis constraints on the galaxy halo connection at z ∼ 2 5 from galaxy galaxy and galaxy lyα clustering |
| topic | Galaxy dark matter halos Lyα forest Lyman-break galaxies |
| url | https://doi.org/10.3847/1538-4357/ad0896 |
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