What Regulates Galaxy Evolution? Open Questions in Our Understanding of Galaxy Formation and Evolution

Abstract

In April 2013, a workshop entitled "What Regulates Galaxy Evolution" was held at the Lorentz Center. The aim of the workshop was to bring together the observational and theoretical community working on galaxy evolution, and to discuss in depth of the current problems in the subject, as well as to review the most recent observational constraints. A total of 42 astrophysicists attended the workshop. A significant fraction of the time was devoted to identifying the most interesting "open questions" in the field, and to discuss how progress can be made. This review discusses the four questions (one for each day of the workshop) that, in our opinion, were the focus of the most intense debate. We present each question in its context, and close with a discussion of what future directions should be pursued in order to make progress on these problems.

arXiv comment36 pages, 6 Figures, submitted to New Astronomy Reviews

References in corpus (125)

• Stellar population synthesis at the resolution of 2003
• The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
• The physical properties of star forming galaxies in the low redshift universe
• Dark Matter Substructure in Galactic Halos
• The Galaxy Evolution Explorer: A Space Ultraviolet Survey Mission
• Stellar Masses and Star Formation Histories for 10^5 Galaxies from the Sloan Digital Sky Survey
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• Evolutionary population synthesis: models, analysis of the ingredients and application to high-z galaxies
• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• UV Star Formation Rates in the Local Universe
• The hierarchical formation of the brightest cluster galaxies
• The epochs of early-type galaxy formation as a function of environment
• Multiwavelength study of massive galaxies at z~2. I. Star formation and galaxy growth
• The Environmental Dependence of the Relations between Stellar Mass, Structure, Star Formation and Nuclear Activity in Galaxies
• A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
• CALIFA, the Calar Alto Legacy Integral Field Area survey: I. Survey presentation
• NYU-VAGC: a galaxy catalog based on new public surveys
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• The ages and metallicities of galaxies in the local universe
• From dwarf spheroidals to cDs: Simulating the galaxy population in a LCDM cosmology
• A Semi-Analytic Model for the Co-evolution of Galaxies, Black Holes, and Active Galactic Nuclei
• The propagation of uncertainties in stellar population synthesis modeling III: model calibration, comparison, and evaluation
• A Redshift Survey of the Submillimeter Galaxy Population
• Mass assembly in quiescent and star-forming galaxies since z=4 from UltraVISTA
• Galaxy Groups in the SDSS DR4: I. The Catalogue and Basic Properties
• The Evolution of the Stellar Mass Functions of Star-Forming and Quiescent Galaxies to z = 4 from the COSMOS/UltraVISTA Survey
• Analysis of galaxy SEDs from far-UV to far-IR with CIGALE: Studying a SINGS test sample
• Modeling the Panchromatic Spectral Energy Distributions of Galaxies
• The physics driving the cosmic star formation history
• The evolution of rotating stars
• The Growth of Massive Galaxies Since z=2
• The Origin of Star Formation Gradients in Rich Galaxy Clusters
• Properties of Galaxy Groups in the SDSS: I.-- The Dependence of Colour, Star Formation, and Morphology on Halo Mass
• Galaxy evolution in groups and clusters: satellite star formation histories and quenching timescales in a hierarchical Universe
• A systematic variation of the stellar initial mass function in early-type galaxies
• A Dust-Obscured Massive Maximum-Starburst Galaxy at a Redshift of 6.34
• The Impact of cold gas accretion above a mass floor on galaxy scaling relations
• Resolved stellar mass maps of galaxies. I: method and implications for global mass estimates
• The Evolution of the Stellar Mass Function of Galaxies from z=4.0 and the First Comprehensive Analysis of its Uncertainties: Evidence for Mass-dependent Evolution
• Galaxy evolution in groups and clusters: star formation rates, red sequence fractions, and the persistent bimodality
• The NEWFIRM Medium-band Survey: Photometric Catalogs, Redshifts and the Bimodal Color Distribution of Galaxies out to z~3
• Feedback and Recycled Wind Accretion: Assembling the z=0 Galaxy Mass Function
• The Stellar Initial Mass Function in Early-Type Galaxies From Absorption Line Spectroscopy. II. Results
• The Importance of Satellite Quenching for the Build-Up of the Red Sequence of Present Day Galaxies
• The Aquila comparison Project: The Effects of Feedback and Numerical Methods on Simulations of Galaxy Formation
• Keck Spectroscopy of 3<z<7 Faint Lyman Break Galaxies: The Importance of Nebular Emission in Understanding the Specific Star Formation Rate and Stellar Mass Density
• Dark matter substructure and gamma-ray annihilation in the Milky Way halo
• Simultaneous ram pressure and tidal stripping; how dwarf spheroidals lost their gas
• Making Galaxies in a Cosmological Context: The Need for Early Stellar Feedback
• A Public Ks-selected Catalog in the COSMOS/UltraVISTA Field: Photometry, Photometric Redshifts and Stellar Population Parameters
• The haloes of bright satellite galaxies in a warm dark matter universe
• Dust in active nuclei. I. Evidence for "anomalous" properties
• Evidence for TP-AGB stars in high redshift galaxies, and their effect on deriving stellar population parameters
• The Dust Attenuation Law in Distant Galaxies: Evidence for Variation with Spectral Type
• The Many Manifestations of Downsizing: Hierarchical Galaxy Formation Models confront Observations
• Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06
• What do we learn from IRAC observations of galaxies at 2 < z < 3.5?
• Smooth(er) Stellar Mass Maps in CANDELS: Constraints on the Longevity of Clumps in High-redshift Star-forming Galaxies
• The environmental history of group and cluster galaxies in a LambdaCDM Universe
• The GALEX-VVDS Measurement of the Evolution of the Far-Ultraviolet Luminosity Density and the Cosmic Star Formation Rate
• Environment and self-regulation in galaxy formation
• The Colours of Satellite Galaxies in Groups and Clusters
• Star formation rates and masses of z ~ 2 galaxies from multicolour photometry
• Evidence for Ubiquitous, High-EW Nebular Emission in z~7 Galaxies: Towards a Clean Measurement of the Specific Star Formation Rate using a Sample of Bright, Magnified Galaxies
• The Spectral Energy Distributions Of z~8 Galaxies From The IRAC Ultra Deep Fields: Emission Lines, Stellar Masses, And Specific Star Formation Rates At 650 Myr
• Constraints on the assembly and dynamics of galaxies. II. Properties of kiloparsec-scale clumps in rest-frame optical emission of z ~ 2 star-forming galaxies
• The impact of nebular emission on the ages of z~6 galaxies
• The Metallicity of Galaxy Disks: Infall versus Outflow
• Bulge and Clump Evolution in Hubble Ultra Deep Field Clump Clusters, Chains and Spiral Galaxies
• Galaxy And Mass Assembly (GAMA): The star formation rate dependence of the stellar initial mass function
• Simulations of the galaxy population constrained by observations from z=3 to the present day: implications for galactic winds and the fate of their ejecta
• Environmental Effects on Satellite Galaxies: The Link Between Concentration, Size and Colour Profile
• Star formation rates and stellar masses of z=7-8 galaxies from IRAC observations of the WFC3/IR ERS and the HUDF field
• Properties of Galaxy Groups in the SDSS: II.- AGN Feedback and Star Formation Truncation
• Star formation history of barred disc galaxies
• The SEDs and Host Galaxies of the dustiest GRB afterglows
• How well can we really estimate the stellar masses of galaxies from broadband photometry?
• The SDSS DR6 Luminosity Functions of Galaxies
• On the impact of empirical and theoretical star formation laws on galaxy formation
• A Re-examination of Galactic Conformity and a Comparison with Semi-analytic Models of Galaxy Formation
• Extreme Emission Line Galaxies in CANDELS: Broad-Band Selected, Star-Bursting Dwarf Galaxies at z>1
• The Rising Star-Formation Histories of Distant Galaxies and Implications for Gas Accretion with Time
• On the Last 10 Billion Years of Stellar Mass Growth in Star-Forming Galaxies
• The Dawn of the Red: Star formation histories of group galaxies over the past 5 billion years
• A fundamental problem in our understanding of low mass galaxy evolution
• The Atomic to Molecular Transition and its Relation to the Scaling Properties of Galaxy Disks in the Local Universe
• Predictions for the CO emission of galaxies from a coupled simulation of galaxy formation and photon dominated regions
• The Spectral Energy Distribution of Post-Starburst Galaxies in the NEWFIRM Medium-Band Survey: A Low Contribution from TP-AGB Stars
• How Do Star-Forming Galaxies at Z>3 Assemble Their Masses?
• The extinction law at high redshift and its implications
• Satellite abundances around bright isolated galaxies
• Stellar Ages and Metallicities of Central and Satellite Galaxies: Implications for Galaxy Formation and Evolution
• Cluster Galaxies Die Hard
• A Near-Infrared Spectroscopic Survey of K-selected Galaxies at z ~ 2.3: Comparison of Stellar Population Synthesis Codes and Constraints from the Rest-frame NIR
• Three-dimensional simulations of the interstellar medium in dwarf galaxies - I. Ram pressure stripping
• Recovering Stellar Population Properties and Redshifts from Broad-Band Photometry of Simulated Galaxies: Lessons for SED Modeling
• On the puzzling plateau in the specific star formation rate at z=2-7
• The Dust Extinction Curves of Gamma-Ray Burst Host Galaxies
• Near Infrared spectroscopy of post-starburst galaxies: a limited impact of TP-AGB stars on galaxy SEDs
• The missing metals problem. III How many metals are expelled from galaxies?
• New Constraints on the Efficiencies of Ram-Pressure Stripping and the Tidal Disruption of Satellite Galaxies
• Dynamical Versus Stellar Masses in Compact Early-Type Galaxies: Further Evidence for Systematic Variation in the Stellar Initial Mass Function
• Observational Evidence for an Age Dependence of Halo Bias
• Modelling and interpreting the dependence of clustering on the spectral energy distributions of galaxies
• Galaxy Formation in WDM Cosmology
• An Empirical Model for the Star Formation History in Dark Matter Halos
• Confirmation of Small Dynamical and Stellar Masses for Extreme Emission Line Galaxies at z~2
• How Typical Are The Local Group Dwarf Galaxies?
• Simulating the evolution of disc galaxies in a group environment. I. The influence of the global tidal field
• A modified star formation law as a solution to open problems in galaxy evolution
• Spatially Resolved Galaxy Star Formation and its Environmental Dependence I
• Recovering galaxy stellar population properties from broad-band spectral energy distribution fitting II. The case with unknown redshift
• Mock observations with the Millennium simulation: Cosmological downsizing and intermediate redshift observations
• Salpeter normalization of the Stellar Initial Mass Function for massive galaxies at z~1
• Semi-analytic galaxy formation in f(R)-gravity cosmologies
• On the stellar populations of massive galaxies
• Can galaxy outflows and re-accretion produce the downsizing in specific star formation rate of late-type galaxies?
• Comparison of the VIMOS-VLT Deep Survey with the Munich semi-analytical model - I. Magnitude counts, redshift distribution, colour bimodality, and galaxy clustering
• Comparison of the VIMOS-VLT Deep Survey with the Munich semi-analytical model. II. The colour-density relation up to z=1.5
• The formation of disk galaxies in computer simulations
• Stellar Populations: High Spectral Resolution Libraries. Improved TP-AGB Treatment
• How `heredity' and `environment' shape galaxy properties
• More than just halo mass: Modelling how the red galaxy fraction depends on multiscale density in a HOD framework
• The Star Formation History of the Local Group

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• Galaxy assembly, stellar feedback and metal enrichment: the view from the GAEA model
• Galaxy evolution across environments as probed by the ages, stellar metallicities and [alpha/Fe] of central and satellite galaxies
• HI-selected Galaxies in Hierarchical Models of Galaxy Formation and Evolution
• Nature versus nurture: what regulates star formation in satellite galaxies?
• A Comprehensive Bayesian Discrimination of the Simple Stellar Population Model, Star Formation History and Dust Attenuation Law in the Spectral Energy Distribution Modeling of Galaxies
• Mass-to-Light Ratios of Spatially Resolved Stellar Populations in M31
• Probabilistic model for dynamic galaxy decomposition