The growth of disks and bulges during hierarchical galaxy formation. I: fast evolution vs secular processes

Abstract

We present a theoretical model for the evolution of mass, angular momentum and size of galaxy disks and bulges, and we implement it into the semi-analytic galaxy formation code SAGE. The model follows both secular and violent evolutionary channels, including smooth accretion, disk instabilities, minor and major mergers. We find that the combination of our recipe with hierarchical clustering produces two distinct populations of bulges: merger-driven bulges, akin to classical bulges and ellipticals, and instability-driven bulges, akin to secular (or pseudo-)bulges. The model mostly reproduces the mass-size relation of gaseous and stellar disks, the evolution of the mass-size relation of ellipticals, the Faber-Jackson relation, and the magnitude-colour diagram of classical and secular bulges. The model predicts only a small overlap of merger-driven and instability-driven components in the same galaxy, and predicts different bulge types as a function of galaxy mass and disk fraction. Bulge type also affects the star formation rate and colour at a given luminosity. The model predicts a population of merger-driven red ellipticals that dominate both the low-mass and high-mass ends of the galaxy population, and span all dynamical ages; merger-driven bulges in disk galaxies are dynamically old and do not interfere with subsequent evolution of the star-forming component. Instability-driven bulges dominate the population at intermediate galaxy masses, especially thriving in massive disks. The model green valley is exclusively populated by instability-driven bulge hosts. Through the present implementation the mass accretion history is perceivable in the galaxy structure, morphology and colours.

Accepted on MNRAS; 24 pages, 11 figures

References in corpus (17)

• The hierarchical formation of the brightest cluster galaxies
• Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
• Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective
• The Structure of Classical Bulges And Pseudobulges: The Link Between Pseudobulges And Sersic Index
• Bulge Formation by the Coalescence of Giant Clumps in Primordial Disk Galaxies
• A Revised Model for the Formation of Disk Galaxies: Low Spin and Dark-Halo Expansion
• Semi-Analytic Galaxy Evolution (SAGE): Model Calibration and Basic Results
• The MORGANA model for the rise of galaxies and active nuclei
• Geometry of Star-Forming Galaxies from SDSS, 3D-HST and CANDELS
• The SAMI Galaxy Survey: Early Data Release
• A Connection Between Bulge Properties and the Bimodality of Galaxies
• Galaxy And Mass Assembly (GAMA): the Stellar Mass Budget by Galaxy Type
• Old and young bulges in late-type disk galaxies
• Central Star Formation in Pseudobulges and Classical Bulges
• The Role of Dissipation in the Scaling Relations of Cosmological Merger Remnants
• The accretion histories of brightest cluster galaxies from their stellar population gradients
• Secular Evolution in Disk Galaxies: The Growth of Pseudobulges and Problems for Cold Dark Matter Galaxy Formation

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