Mock Innsbruck Mock Innsbruck is the fifth instalment of the Mock series after Mock Santiago, Perth, Durham, and Cordoba. The goal of Mock Innsbruck is to bring together leading researchers in computational studies of galaxy formation and cosmology and key representatives from current and future surveys to promote discussions and collaborations. The main focus of Mock Innsbruck will be on the galaxy-halo connection. In this meeting we will discuss: • The implications of the galaxy-halo connection on galaxy formation models and cosmology • The role of galaxy and halo assembly bias on empirical galaxy-halo models (e.g., SHAM, HOD) • What we can learn from the next generation of wide-field galaxy surveys to understand the galaxy-halo connection • Alternative new techniques to connect galaxy properties with dark matter haloes • Galaxy-halo models to interpret galaxy surveys and their spatial statistics • Mock galaxies to explore different open questions in astrophysics Organizing committee SOC LOC Maria Celeste Artale Carlton Baugh Maria Celeste Artale Sergio Contreras Gabriella de Lucia Gabriella Hirsch Rosa Domínguez Tenreiro Violeta Gonzalez-Perez Nadeen Sabha Claudia Lagos Peder Norberg Doris Stoppacher Nelson Padilla Idit Zehavi Useful Information Talks will be held at the Claudiasaal in Palais Claudiana (Herzog-Friedrich-Straße 3, Innsbruck). It is situated on the second floor of the building. Coffee breaks and lunches will be offered in the Türingsaal saal on the first floor. We will have available a small room in the basement of the building for spontaneous meetings. Wi-Fi will be available during the conference. The University of Innsbruck also provides access to eduroam network. The conference dinner will be held at Bierstindl, Klostergasse 6, Innsbruck on Thursday at 20:00hr. 1 Timetable Tuesday, 10th of March 9:00–9:25 Registration 9:25–9:30 Welcome remarks Nelson Padilla The evolution of the baryon fraction as 9:30–9:50 a cause of scatter in the galaxy stellar GDM mass in EAGLE Miguel Angel de Icaza Sparse Regression for modeling the 9:50–10:10 Lizaola relation between Stellar Mass and Halo GDM Evolution Jonas Chaves Montero The influence of star formation history 10:10–10:30 GDM on galaxy colors 10:30–11:00 Coffee Benjamin Moster Connecting galaxies and dark matter 11:00–11:20 haloes with deep neural networks and GDM reinforcement learning Carolina Cuesta-Lazaro A tree grows in Illustris TNG: the 11:20–11:40 galaxy-halo connection learned by GDM boosted decision trees Tilman Troester Painting with baryons: augmenting 11:40–12:00 N-body simulations with gas using GDM deep generative models 12:00–12:45 Group discussion: Gal-DM halo mocks 12:45–14:00 Lunch Wojciech Hellwing On halo and galaxy connection with 14:00–14:20 LSS the cosmic web Enrique Paillas 14:20–14:40 LSS Redshift-space distortions around voids Andrés Balaguera-Antolinez Cosmological Catalogs for Large Scale 14:40–15:00 LSS Structure 15:00–15:30 Coffee Christian Arnold Zoomed hydrodynamical simulations of 15:30–15:50 LSS the local group in f(R) modified gravity Joaquín Armijo Torres The CODEX-BOSS marked 15:50–16:10 LSS cross-correlation function to unveil the form of gravity 16:10–17:00 Group discussion: LSS 2 Wednesday, 11 of March Matthieu Schaller The EAGLE-XL simulations - Galaxy 9:30–9:50 GFM formation in a cosmological volume Weiguang Cui On the scatters of these relations for 9:50–10:10 connection BH, galaxy and dark matter GFM halos Lucie Barnes Characterising haloes and subhaloes by 10:10–10:30 GFM their interaction histories 10:30–11:00 Coffee Violeta Gonzalez-Perez Model star-forming emission lines at 11:00–11:20 ELG z ∼ 1 Modelling the clustering properties Ginevra Favole and the halo occupation distribution of 11:20–11:40 ELG emission line galaxies in next-generation cosmological surveys Santiago Avila The Halo Occupation Distribution of 11:40–12:00 ELG Emission Line Galaxies with eBOSS 12:00–12:45 Group discussion: Resolution (from hydro to HOD mocks) 12:45–14:00 Lunch Idit Zehavi On encapsulating assembly bias in the 14:00–14:20 AB galaxy-halo connection Xiaoju Xu Effects of secondary halo properties on 14:20–14:40 AB galaxy assembly bias Luminous Red Galaxies on the edge of Doris Stoppacher the assembly bias – A perspective on 14:40–15:00 AB the formation history of massive galaxies throughout cosmic history 15:00–15:30 Coffee 15:30–16:00 Gender Bias: Oral presentation given by Dr. Heidi Siller 16:00–16:30 Gender Bias: general discussion with the participants Thursday, 12 of March Frank van den Bosch Probing the Galaxy-Halo Connection 9:30–9:50 AB with Basilisk Antonio Montero-Dorta The manifestation of secondary halo 9:50–10:10 AB bias on the galaxy population Kevin McCarthy On the constraints of galaxy assembly 10:10–10:30 AB bias in velocity-space 10:30–11:00 Coffee Andreas Berlind Harnessing the full power of galaxy 11:00–11:20 AB clustering to constrain the galaxy-halo connection 3 Gillian Beltz-Mohmann Taking HOD modeling to the next level: 11:20–11:40 AB comparing to hydrodynamic simulations Ivan Lacerna Galactic conformity around the most 11:40–12:00 AB massive structures in the local Universe 12:00–12:45 Group discussion: Assembly Bias 12:45–14:00 Lunch Jingjing Shi The Formation History of Subhalos and 14:00–14:20 GFM the Evolution of Satellite Galaxies Marta Spinelli Modelling the HI content of the 14:20–14:40 post-reionization Universe for Intensity GFM Mapping Diego Pallero 14:40–15:00 Too dense to go through GFM 15:00–15:30 Coffee Celeste Artale Mocks for the host galaxies of merging 15:30–15:50 GFM compact objects Filippo Santoliquido The cosmic merger rate density of 15:50–16:10 GFM compact binaries 16:10–17:00 Group discussion: Galaxy Formation 20:00 Conference Dinner Friday, 13 of March Johan Comparat Mock catalogs for eROSITA clusters and 9:30–9:50 ELG AGNs Pauline Zarrouk (TBC) Galaxy-halo connection: which 9:50–10:10 ELG interpretation for quasars? Jeremy Tinker Galaxy Clustering with the Aemulus 10:10–10:30 CC Project 10:30–11:00 Coffee Raul Angulo Numerical Simulations for Large-Scale 11:00–11:20 CC Structure Analyses Giovanni Aricò Modelling the large scale structure of 11:20–11:40 CC the Universe as a function of cosmology and baryonic physics Sergio Contreras Using a new generation of abundance 11:40–12:00 CC matching mocks to constrain cosmology 12:00–12:45 Group discussion: Cosmological Constrains 12:45–14:00 Lunch 4 List of sessions: GDM: Galaxy-Dark matter halo mocks LSS: Large-Scale Structure of the universe GFM: Galaxy formation models ELG: ELGs & Quasars AB: Assembly bias CC: Cosmological constraints Chairs: 10 March morning session: Kevin McCarthy 10 March afternoon session: 11 March morning session: Tilman Troester 11 March afternoon session: Antonio Montero-Dorta 11 March Assembly Bias session: Doris Stoppacher 12 March morning session: Weiguang Cui 12 March afternoon session: Xiaoju Xu 13 March morning session: Ivan Lacerna Leaders for group discussions: Gal-DM halo mocks: Padilla, Chaves Montero, Cuesta LSS: Hellwing, Armijo Torres, Balaguera-Antolínez Resolution (from hydro to HOD mocks): Gonzalez-Perez, Schaller, Favole, Zarrouk(TBC) Assembly Bias: Zehavi, Stoppacher, van den Bosch, Berlind Galaxy Formation: Artale, Spinelli, Shi Cosmological Constrains: Comparat, Tinker, Aricò, Angulo Details about the Gender Bias session: The goal of this session is to discuss several aspects of gender diversity in science. We will have first an oral presentation from an expert in the area, Dr. Heidi Siller, and a panel discussion among the participants afterwards. Dr. Siller is a clinical and health psychologist and researcher. She works at the Gender Medicine Unit, Medical University of Innsbruck. Her research focuses on violence in different settings as well as on career progression, inequality in career pursuit and discrimination in careers. She is also a member in the advisory board of the Research Platform Center for Gender Studies Innsbruck (CGI). 5 List of Abstracts – Talks Numerical Simulations for Large-Scale Structure Analyses Angulo, Raul Donostia International Physics Center, Spain In this talk, I will discuss several advances in cosmological numerical simulations. Specifically, I will address recent progress in improving the accuracy of N-body simulations, and the respective modelling of galaxy clustering and weak lensing measurements. Modelling the large scale structure of the Universe as a function of cosmology and baryonic physics Aricò, Giovanni Donostia International Physics Center, Spain We present a framework that models the three-dimensional distribution of mass in the Universe as a function of cosmological and astrophysical parameters. Our approach combines two different tech- niques: a rescaling algorithm that modifies the cosmology of gravity-only N-body simulations, and a “baryonification” algorithm which mimics the effects of astrophysical processes induced by baryons, such as star formation and AGN feedback. We show how this approach can accurately reproduce the effects of baryons on the matter power spectrum of various state-of-the-art hydrodynamical simulations (EAGLE, Illustris, Illustris-TNG, Horizon-AGN, and OWLS, Cosmo-OWLS and BAHAMAS), −1 to better than 1% from very large down to small, highly nonlinear, scales (k ∼ 5hMpc ), and from z = 0 up to z ∼ 2. We highlight that we can obtain these predictions for arbitrary baryonic models and cosmology (including massive neutrinos and dynamical dark energy models) with an almost negligible CPU cost. This method paves the way to the fast creation of X-ray, weak lensing, and kinetic and thermal Sunyaev-Zeldovich maps.