Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-26T07:49:07.808Z Has data issue: false hasContentIssue false
  • English
  • Français

The Evolution of Passive Galaxies since z=1: Major Mergers vs Secular Processes

Published online by Cambridge University Press:  13 April 2010

Carlos López-Sanjuan ,
Marc Balcells ,
Pablo G. Pérez-González ,
Guillermo Barro ,
César Enrique García-Dabó ,
Jesús Gallego  and
Jaime Zamorano
Carlos López-Sanjuan
Affiliation:
Instituto de Astrofísica de Canarias, Calle Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain email: [email protected] Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain Laboratoire d'Astrophysique de Marseille, 38, rue Frédéric Joliot-Curie, F-13388 Marseille cedex 13, France
Marc Balcells
Affiliation:
Instituto de Astrofísica de Canarias, Calle Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain email: [email protected] Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain Isaac Newton Group of Telescopes, Aptdo. Correos 321, E-38700 Santa Cruz de La Palma, Tenerife, Spain
Pablo G. Pérez-González
Affiliation:
Departamento de Astrofísica y Ciencias de la Atmósfera, Facultad de C.C. Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
Guillermo Barro
Affiliation:
Departamento de Astrofísica y Ciencias de la Atmósfera, Facultad de C.C. Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
César Enrique García-Dabó
Affiliation:
Instituto de Astrofísica de Canarias, Calle Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain email: [email protected] FRACTAL SLNE, C/ Tulipán 2, portal 13, 1 A, E-28231 Las Rozas, Madrid, Spain
Jesús Gallego
Affiliation:
Departamento de Astrofísica y Ciencias de la Atmósfera, Facultad de C.C. Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
Jaime Zamorano
Affiliation:
Departamento de Astrofísica y Ciencias de la Atmósfera, Facultad de C.C. Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
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.

We study the evolution of the red sequence and the blue cloud since z ~ 1 to present in GOODS-S field for MB ≤ −20 and M* ≥ 1010M⊙ selected galaxies. We segregate the galaxies in early-type galaxies (ET, E/S0/Sa), and late-type galaxies (LT, Sb-Irr) by their position in the concentration-asymmetry plane, while in passive and star-forming by their rest-frame NUV – R color and their 24μm properties.

We find that red sequence (passive early types) comoving number density rise with cosmic time in both samples, while blue cloud (star-forming late types) number density descent in luminosity-selected samples and increase in mass-selected sample. We also find a third population that comprises star-forming early-type galaxies.

Comparing the observed evolution with the disk-disk (wet) major merger rate in GOODS-S, we infer that only ~20% of M* ≥ 1010M⊙ red sequence galaxies appeared since z = 1 can be explained by this kind of mergers, suggesting that minor mergers and secular evolution are the main processes in the red sequence evolution of M* ≥ 1010M⊙ galaxies since z ~ 1.

Keywords

galaxies: evolutiongalaxies: formationgalaxies: interactions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S262: Stellar Populations – Planning for the Next Decade , August 2009 , pp. 209 - 212
Copyright
Copyright © International Astronomical Union 2010

References

Bell, E. F., Zheng, X. Z., Papovich, C. et al. 2007, ApJ, 663, 834CrossRefGoogle Scholar
Bower, R. G., Benson, A. J., Malbon, R. et al. 2006, MNRAS, 370, 64CrossRefGoogle Scholar
Bundy, K., Ellis, R. S., Conselice, C. J. et al. 2006, ApJ, 651, 120CrossRefGoogle Scholar
Bundy, K., Fukugita, M., Ellis, R. S. et al. 2009, ApJ, 697, 1369CrossRefGoogle Scholar
Cameron, E., Driver, S. P., Graham, A. W. et al. 2009, ApJ, 699, 105CrossRefGoogle Scholar
Cowie, L. L., Songaila, A., Hu, E. M., & Cohen, J. G. 1996, AJ, 112, 839CrossRefGoogle Scholar
de Ravel, L., Le Fèvre, O., Tresse, L. et al. 2009, A&A, 498, 379Google Scholar
Gadotti, D. A. 2009, MNRAS, 393, 1531CrossRefGoogle Scholar
Ilbert, O., Lauger, S., Tresse, L. et al. 2006, A&A, 453, 809Google Scholar
Jogee, S., Miller, S. H., Penner, K. et al. 2009, ApJ, 697, 1971CrossRefGoogle Scholar
López-Sanjuan, C., García-Dabó, C. E., & Balcells, M. 2008, PASP, 120, 571CrossRefGoogle Scholar
López-Sanjuan, C., Balcells, M., García-Dabó, C. E. et al. (2009a), ApJ, 694, 643CrossRefGoogle Scholar
López-Sanjuan, C., Balcells, M., Pérez-González, P. G. et al. (2009b), A&A, 501, 505Google Scholar
López-Sanjuan, C., Balcells, M., & Pérez-González, P. G. et al. (2009c), ApJ, submittedGoogle Scholar
Mandelbaum, R., Seljak, U., Kauffmann, G. et al. 2006, MNRAS, 368, 715CrossRefGoogle Scholar
Pérez-González, P. G., Rieke, G. H., Villar, V. et al. 2008, ApJ, 675, 234CrossRefGoogle Scholar
Naab, T., Jesseit, R., & Burkert, A. 2006, MNRAS, 372, 839CrossRefGoogle Scholar
Villar, V., Gallego, J., Pérez-González, P. G. et al. 2008, Apj, 677, 169CrossRefGoogle Scholar
Wild, V., Walcher, C. J., Johansson, P. H. et al. 2009, MNRAS, 395, 144CrossRefGoogle Scholar