Hostname: page-component-8448b6f56d-mp689 Total loading time: 0 Render date: 2024-04-19T21:08:09.268Z Has data issue: false hasContentIssue false
  • English
  • Français

The assembly of stellar haloes in massive Early-Type Galaxies

Published online by Cambridge University Press:  21 March 2017

F. Buitrago
F. Buitrago*
Affiliation:
Instituto de Astrofísica e Ciências do Espaço, Universidade de Lisboa, OAL, Tapada da Ajuda, PT1349-018 Lisbon, Portugal email: fbuitrago@oal.ul.pt Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Edifício C8, Campo Grande, PT1749-016 Lisbon, Portugal
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Massive (Mstellar ⩾ 5×1010 M⊙) Early-Type Galaxies (ETGs) must build an outer stellar envelope over cosmic time in order to account for their remarkable size evolution. This is similar to what occurs to nearby Late-Type Galaxies (LTGs), which create their stellar haloes out of the debris of lower mass systems. We analysed the outer parts of massive ETGs at z < 1 by exploiting the Hubble Ultra Deep Field imaging. These galaxies store 10-30% of their stellar mass at distances 10 < R/kpc < 50, in contrast to the low percentages (< 5%) found for LTGs. We find evidence for a progressive outskirt development with redshift driven solely via merging.

Keywords

galaxies: elliptical and lenticularcDgalaxies: evolutiongalaxies: halos
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 321 - 323
Copyright
Copyright © International Astronomical Union 2017 

References

Buitrago, F., Trujillo, I., et al. 2008, ApJL, 687, L61 Google Scholar
Buitrago, F., Trujillo, I., et al. 2013, MNRAS, 428, 1460 Google Scholar
Buitrago, F., Conselice, C. J., et al. 2014, MNRAS, 439, 1494 Google Scholar
Buitrago, F., Trujillo, I., et al. 2016, arXiv: 1602.01846Google Scholar
Cooper, A. P., D'Souza, R., et al. 2013, MNRAS, 434, 3348 Google Scholar
Giavalisco, M., Livio, M., et al. 1996, AJ, 112, 369 CrossRefGoogle Scholar
Hopkins, P. F., Bundy, K., et al. 2009, MNRAS, 398, 898 Google Scholar
Koekemoer, A. M., Ellis, R. S., et al. 2012, ApJS, 209, 3 CrossRefGoogle Scholar
Krist, J. 1995, ASP-CS, 77, 349 Google Scholar
Oser, L., Ostriker, J. P., et al. 2010, ApJ, 725, 2312 Google Scholar
Pérez-González, P. G., Trujillo, I., et al. 2008, ApJ, 687, 50 Google Scholar
Szomoru, D., Franx, M., et al. 2012, ApJ, 749, 121 CrossRefGoogle Scholar
Trujillo, I. & Fliri, J. 2015, ApJ, 823, 123 Google Scholar