Physics of star formation history and the luminosity function of galaxies therefrom

Abstract

We show that the star formation history, the reionization history and the present luminosity function of galaxies are reproduced in a simple gravitational collapse model within the $\Lambda$CDM regime to almost a quantitative accuracy, when the physical conditions, the Jeans criterion and the cooling process, are taken into account. Taking a reasonable set of the model parameters, the reionisation takes place sharply at around redshift $1+z\simeq 7.5$, and the resulting luminosity function turns off at $L\simeq 10^{10.7}{L}_{\odot }$, showing the consistency between the star formation history and the reionisation of the Universe. The model gives the total amount of stars ${\Omega }_{\mathrm{star}}=0.004$ in units of the critical density compared to the observation $0.0044$ with the recycling factor $1.6$ included. In order to account for the observed star formation rate and the present luminosity function, the star formation efficiency is not halo mass independent but becomes maximum at the halo mass $\simeq 10^{12}{M}_{\odot }$ and is suppressed for both smaller and larger mass haloes.

arXiv comment8 pages, 7 figures, revised version published in MNRAS

References in corpus (37)

• Galactic Stellar and Substellar Initial Mass Function
• Large scale bias and the peak background split
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• Constraining the Evolution of the Ionizing Background and the Epoch of Reionization with z ~ 6 Quasars II: A Sample of 19 Quasars
• The Star Formation History of Field Galaxies
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• Cosmic Reionization and Early Star-Forming Galaxies: A Joint Analysis of New Constraints from Planck and Hubble Space Telescope
• A Recipe for Galaxy Formation Shaun Cole
• The Cosmic Energy Inventory
• Reionization after Planck: The Derived Growth of the Cosmic Ionizing Emissivity now matches the Growth of the Galaxy UV Luminosity Density
• The properties and luminosity function of extremely low luminosity galaxies
• Quantitative Constraints on the Reionization History from the IGM Damping Wing Signature in Two Quasars at z > 7
• The massive end of the luminosity and stellar mass functions: Dependence on the fit to the light profile
• Toy Models for Galaxy Formation versus Simulations
• The Galaxy UV Luminosity Function Before the Epoch of Reionization
• On the Lack of Evolution in Galaxy Star Formation Efficiency
• Constraints on the Star Formation Efficiency of Galaxies During the Epoch of Reionization
• On the Escape of Ionizing Radiation from Starbursts
• The Galaxy Luminosity Function during the Reionization Epoch
• The mean free path of ionizing photons at 5 < z < 6: evidence for rapid evolution near reionization
• The Global 21-cm Signal in the Context of the High-z Galaxy Luminosity Function
• Texas Spectroscopic Search for Ly$\alpha$ Emission at the End of Reionization III. the Ly$\alpha$ Equivalent-width Distribution and Ionized Structures at $z>7$
• Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function to $z=0.1$ from the r-band selected equatorial regions
• A physical model for the 0 < z < 8 redshift evolution of the galaxy UV luminosity and stellar mass functions
• Re-examining the Lyman Continuum in Starburst Galaxies Observed with the Hopkins Ultraviolet Telescope
• Reheating during Hierarchical Clustering in the Universe Dominated by the Cold Dark Matter
• Gas cooling in simulations of the formation of the galaxy population
• SDSS IV MaNGA - An archaeological view of the Cosmic Star Formation History
• A Comparison of Semi-Analytic and Smoothed Particle Hydrodynamics Galaxy Formation
• A Minimalist Feedback-Regulated Model for Galaxy Formation During the Epoch of Reionization
• The Evolution of the Lyman-Alpha Luminosity Function During Reionization
• The cosmic evolution of the spatially-resolved star formation rate and stellar mass of the CALIFA survey
• A Comparison of Gas Dynamics in SPH and Semi-analytic Models of Galaxy Formation
• On the inevitability of reionization: implications for cosmic microwave background fluctuations
• The Earliest Epoch of Reionisation in the Standard $\Lambda$CDM Model
• Life Products of Stars