Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-23T05:45:50.704Z Has data issue: false hasContentIssue false
  • English
  • Français

The quest for relics: Massive compact galaxies in the local Universe

Published online by Cambridge University Press:  04 June 2020

A. Schnorr-Müller Open the ORCID record for A. Schnorr-Müller [Opens in a new window] ,
M. Trevisan ,
F. S. Lohmann ,
N. Mallmann ,
R. Riffel ,
A. Chies-Santos  and
C. Furlanetto
A. Schnorr-Müller
Affiliation:
Astronomy Department, Universidade Federal do Rio Grande do Sul, Brazil
M. Trevisan
Affiliation:
Astronomy Department, Universidade Federal do Rio Grande do Sul, Brazil
F. S. Lohmann
Affiliation:
Astronomy Department, Universidade Federal do Rio Grande do Sul, Brazil
N. Mallmann
Affiliation:
Astronomy Department, Universidade Federal do Rio Grande do Sul, Brazil
R. Riffel
Affiliation:
Astronomy Department, Universidade Federal do Rio Grande do Sul, Brazil
A. Chies-Santos
Affiliation:
Astronomy Department, Universidade Federal do Rio Grande do Sul, Brazil
C. Furlanetto
Affiliation:
Physics Department, Universidade Federal do Rio Grande do Sul, Brazil
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.

In the local Universe there exists a rare population of compact galaxies resembling the high-redshift quiescent population in mass and size. It has been found that some of these objects have survived largely unchanged since their formation at high-z. They are called relic galaxies. With the goal of finding relic galaxies, we searched the SDSS-MaNGA DR15 release for massive compact galaxies. We find that massive compact galaxies are mostly composed of old, metal-rich and alpha enhanced stellar populations. In terms of kinematics, massive compact galaxies show ordered rotation in their velocity fields and σ* profiles rising towards the center. They are predominantly fast rotators and show increased rotational support when compared to a mass-matched control sample of average-sized early-type galaxies. These properties are consistent with these objects being relic galaxies. However, to confirm their relic status, we need to probe larger radii (⪎3Re) than probed with the current data.

Keywords

galaxies: evolutiongalaxies: kinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S352: Uncovering Early Galaxy Evolution in the ALMA and JWST Era , June 2019 , pp. 320 - 321
Copyright
© International Astronomical Union 2020

References

Bournaud, F., Jog, C. J., & Combes, F. 2007, A&A, 476, 1179Google Scholar
Buitrago, F., Trujillo, I., Conselice, C. J., Bouwens, R. J., Dickinson, M., & Yan, H. 2008, ApJL, 687, L6110.1086/592836CrossRefGoogle Scholar
Hoffman, L., Cox, T. J., Dutta, S., & Hernquist, L. 2009, ApJ, 705, 92010.1088/0004-637X/705/1/920CrossRefGoogle Scholar
Vazdekis, A., Koleva, M., Ricciardelli, E., Röck, B., & Falcón-Barroso, J. 2016, MNRAS, 463, 340910.1093/mnras/stw2231CrossRefGoogle Scholar
van der Wel, A., Rix, H. W., Wuyts, S., McGrath, E. J., Koekemoer, A. M., Bell, E. F., Holden, B. P., Robaina, A. R., & McIntosh, D. H. 2011, ApJ, 730, 3810.1088/0004-637X/730/1/38CrossRefGoogle Scholar
Yldrm, A., van den Bosch, R. C. E., van de Ven, G., Martn-Navarro, I., Walsh, J. L., Husemann, B., Gültekin, K., & Gebhardt, K. 2017, MNRAS, 468, 421610.1093/mnras/stx732CrossRefGoogle Scholar