The Missing Satellite Problem in 3D

Abstract

It is widely believed that the large discrepancy between the observed number of satellite galaxies and the predicted number of dark subhalos can be resolved via a variety of baryonic effects which suppress star formation in low mass halos.Supporting this hypothesis, numerous high resolution simulations with star formation, and associated feedback have been shown to reproduce the satellite luminosity function around Milky Way-mass simulated galaxies at redshift zero. However, a more stringent test of these models is their ability to simultaneously match the satellite luminosity functions of a range of host halo masses and redshifts. In this work we measure the luminosity function of faint (sub-Small Magellanic Cloud luminosity) satellites around hosts with stellar masses 10.5$<{\log }_{10}$M${}_{\ast }$/M${}_{\odot }<11.5$ to an unprecedented redshift of 1.5. This new measurement of the satellite luminosity function provides powerful new constraining power; we compare these results with predictions from four different simulations and show that although the models perform similarly over-all, no one model reproduces the satellite luminosity function reliably at all redshifts and host stellar masses. This result highlights the continued need for improvement in understanding the fundamental physics that governs satellite galaxy evolution.

9 pages, 2 figures, submitted to MNRAS

References in corpus (20)

• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• EAZY: A Fast, Public Photometric Redshift Code
• Properties of galaxies reproduced by a hydrodynamic simulation
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
• zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
• 3D-HST WFC3-selected Photometric Catalogs in the Five CANDELS/3D-HST Fields: Photometry, Photometric Redshifts and Stellar Masses
• PRIMUS: Constraints on Star Formation Quenching and Galaxy Merging, and the Evolution of the Stellar Mass Function From z=0-1
• The mass evolution of the first galaxies: stellar mass functions and star formation rates at $4<z<7$ in the CANDELS GOODS-South field
• The galaxy stellar mass function at 3.5<z<7.5 in the CANDELS/UDS, GOODS-South, and HUDF fields
• Resonantly-Produced 7 keV Sterile Neutrino Dark Matter Models and the Properties of Milky Way Satellites
• Synthetic Galaxy Images and Spectra from the Illustris Simulation
• Satellite abundances around bright isolated galaxies
• Triggering Active Galactic Nuclei in Hierarchical Galaxy Formation: Disk instability vs. Interactions
• The colors of satellite galaxies in the Illustris Simulation
• Luminous Satellites of Early-Type Galaxies I: Spatial Distribution
• The Red Sequence of High-Redshift Clusters: a Comparison with Cosmological Galaxy Formation Models
• Cold Dark Matter Substructures in Early-Type Galaxy Halos
• The Milky Way as a High Redshift Galaxy: The Importance of Thick Disk Formation in Galaxies
• Color Dependence in the Spatial Distribution of Satellite Galaxies

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• Ultralight scalars as cosmological dark matter
• Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with 8 quadruple-image strong gravitational lenses
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• Gravitational probes of dark matter physics
• Probing dark matter structure down to $10^7$ solar masses: flux ratio statistics in gravitational lenses with line of sight halos
• Probing dark matter substructure in the gravitational lens HE0435-1223 with the WFC3 grism
• Probing the nature of dark matter by forward modeling flux ratios in strong gravitational lenses
• Luminosity Functions and Host-to-Host Scatter of Dwarf Satellite Systems in the Local Volume
• The Morphology-Density-Relation: Impact on the Satellite Fraction
• Probing sub-galactic mass structure with the power spectrum of surface-brightness anomalies in high-resolution observations of galaxy-galaxy strong gravitational lenses. II.Observational constraints on the sub-galactic matter power spectrum
• The connection between the host halo and the satellite galaxies of the Milky Way
• A Search for Satellite Galaxies of Nearby Star-Forming Galaxies with Resolved Stars in LBT-SONG
• A flux-ratio anomaly in the CO spectral line emission from gravitationally-lensed quasar MG J0414+0534
• The Luminosity Functions and Redshift Evolution of Satellites of Low-Mass Galaxies in the COSMOS Survey
• Probing sub-galactic mass structure with the power spectrum of surface-brightness anomalies in high-resolution observations of galaxy-galaxy strong gravitational lenses. I. Power-spectrum measurement and feasibility study
• On the phase-space structure of galaxy clusters from cosmological simulations
• Pushing the Limits of Detectability: Mixed Dark Matter from Strong Gravitational Lenses
• Testing the Surface Brightness Fluctuation Method on Dwarf Galaxies in the COSMOS Field
• Gravity-mediated Dark Matter models in the de Sitter space
• Graviton spectrum in simplified Dark Matter models with graviton mediators in the de Sitter space
• The Exploration of Local VolumE Satellites (ELVES) Survey: A Nearly Volume-Limited Sample of Nearby Dwarf Satellite Systems