Restrictions to the galaxy evolutionary models from the Hawaiian Deep Fields SSA13 and SSA22

Abstract

Quantitative structural analysis of the galaxies present in the Hawaiian Deep Fields SSA13 and SSA22 is reported. The structural parameters of the galaxies have been obtained automatically by fitting a two-component model (Sersic r^{1/n} bulge and exponential disc) to the surface brightness of the galaxies. The galaxies were classified on the basis of the bulge-to-total luminosity ratio (B/T). The magnitude selection criteria and the reliability of our method have been checked by using Monte Carlo simulations. A complete sample of objects up to redshift 0.8 has been achieved. Spheroidal objects (E/S0) represent ~33% and spirals ~41% of the total number of galaxies, while mergers and unclassified objects represent ~26%. We have computed the comoving space density of the different kinds of objects. In an Einstein-de Sitter universe a decrease in the comoving density of E/S0 galaxies is observed as redshift increases (a ~30% less at z=0.8), while for spiral galaxies a relatively quiet evolution is reported. The framework of hierarchical clustering evolution models of galaxies seems to be the most appropriate to explain our results.

9 pages, 5 figures, 3 tables, MNRAS accepted

References in corpus (4)

• The effects of seeing on Sersic profiles. II. The Moffat PSF
• Optical Surface Photometry of a Sample of Disk Galaxies. II Structural Components
• The Luminosity Function Of Field Galaxies And Its Evolution Since z=1
• Quantitative Morphology of the Intermediate-Redshift Galaxy Cluster Abell 2443 from Ground-Based Imaging -- Evidence for a galaxy concentration index correlation with cluster density

Cited by in corpus (17)

• The ATLAS3D project - XVII. Linking photometric and kinematic signatures of stellar discs in early-type galaxies
• The Luminosity-Size and Mass-Size Relations of Galaxies out to z~3
• Two-dimensional multi-component photometric decomposition of CALIFA galaxies
• Surface density profiles of collisionless disc merger remnants
• The Diversity of Extremely Red Objects
• On the Origin of Dwarf Elliptical Galaxies: The Fundamental Plane
• Chain Galaxies in the Tadpole ACS Field
• Quantitative Morphology of Galaxies in the Core of the Coma Cluster
• Quantitative Morphological Analysis of the HDF--North and HDF-South. I. Early- and Late-type Luminosity-Size Relations of galaxies out to z~1
• Environmental Effects in the Structural Parameters of Galaxies in the Coma Cluster
• Structural Parameters of Dwarf Galaxies in the Coma Cluster: On the Origin of dS0 Galaxies
• Near-IR Galaxy Counts and Evolution from the Wide-Field ALHAMBRA survey
• Evolution of blue E/S0 galaxies from z~1: merger remnants or disk rebuilding galaxies?
• The galaxy luminosity - size relation and selection biases in the Hubble Ultra Deep Field
• Relationship between Hubble type and spectroscopic class in local galaxies
• Wavelength and Redshift Dependence of Bulge/Total Light Ratios in Galaxies
• Dissecting the morphological and spectroscopic properties of galaxies in the local Universe: I. Elliptical galaxies