Dissecting the size evolution of elliptical galaxies since z~1: puffing up vs minor merging scenarios

Abstract

We have explored the buildup of the local mass-size relation of elliptical galaxies using two visually classified samples. At low redshift we compiled a subsample of 2,656 elliptical galaxies from SDSS, whereas at higher redshift (up to z~1) we extracted a sample of 228 object from the HST/ACS images of the GOODS. All the galaxies in our study have spectroscopic data, allowing us to determine the age and mass of the stellar component. Using the fossil record information contained in the stellar populations of our local sample, we do not find any evidence for an age segregation at a given stellar mass depending on the size of the galaxies. At a fixed dynamical mass there is only a <9% size difference in the two extreme age quartiles of our sample. Consequently, the local evidence does not support a scenario whereby the present-day mass-size relation has been progressively established via a bottom-up sequence, where older galaxies occupy the lower part this relation, remaining in place since their formation. We find a trend in size that is insensitive to the age of the stellar populations, at least since z~1. This result supports the idea that the stellar mass-size relation is formed at z~1, with all galaxies populating a region which roughly corresponds to 1/2 of the present size distribution. The fact that the evolution in size is independent of stellar age, together with the absence of an increase in the scatter of the relationship with redshift does not support the puffing up mechanism. The observational evidence, however, can not reject at this stage the minor merging hypothesis. We have made an estimation of the number of minor merger events necessary to bring the high-z galaxies into the local relation compatible with the observed size evolution. Since z=0.8, if the merger mass ratio is 1:3 we estimate ~3+-1 minor mergers and if the ratio is 1:10 we obtain ~8+-2 events.

12 pages, 8 figures, accepted for publication in MNRAS, updated with minor changes to match the published version

References in corpus (15)

• Cold streams in early massive hot haloes as the main mode of galaxy formation
• Galaxy Zoo 1 : Data Release of Morphological Classifications for nearly 900,000 galaxies
• Size evolution of the most massive galaxies at 1.7<z<3 from GOODS NICMOS survey imaging
• The Galaxy Mass Function up to z=4 in the GOODS-MUSIC sample: into the epoch of formation of massive galaxies
• The dramatic size evolution of elliptical galaxies and the quasar feedback
• Post-starburst galaxies: more than just an interesting curiosity
• NICMOS Imaging of DRGs in the HDF-S: A Relation Between Star-Formation and Size at z ~ 2.5
• Superdense massive galaxies in the Nearby Universe
• The role of minor mergers in the recent star formation history of early-type galaxies
• The Kormendy relation of massive elliptical galaxies at z~1.5. Evidence for size evolution ?
• Cosmic Evolution of Size and Velocity Dispersion for Early Type Galaxies
• Dissecting the Red Sequence--I. Star Formation Histories of Quiescent Galaxies: The Color-Magnitude vs. the Color-Sigma Relation
• Structural Properties of Central Galaxies in Groups and Clusters
• Luminous Satellites of Early-Type Galaxies I: Spatial Distribution
• Constraining the star formation and the assembly histories of normal and compact early-type galaxies at 1<z<2

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