Next Article in Journal / Special Issue
Better Galactic Mass Models through Chemistry
Previous Article in Journal / Special Issue
On the Kinematics, Stability and Lifetime of Kinematically Distinct Cores: A Case Study
Open AccessConference Report

The Baryonic Halos of Isolated Elliptical Galaxies

1
Gemini Observatory, Colina el Pino s/n, Casilla 603, La Serena 1700000, Chile
2
Centre for Astrophysics & Supercomputing, Swinburne University, Hawthorn VIC 3122, Australia
3
Department of Astronomy and Astrophysics, University of California Observatories, Santa Cruz, CA 95064, USA
4
Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 3P2, Canada
5
Departamento de Astronomía, Universidad de Concepción, Concepción 3349001, Chile
6
Instituto de Astrofísica, P. Universidad Católica de Chile, Santiago 7820436, Chile
*
Author to whom correspondence should be addressed.
Academic Editors: Duncan A. Forbes and Ericson D. López
Galaxies 2017, 5(3), 42; https://doi.org/10.3390/galaxies5030042
Received: 23 June 2017 / Revised: 11 August 2017 / Accepted: 15 August 2017 / Published: 18 August 2017
(This article belongs to the Special Issue On the Origin (and Evolution) of Baryonic Galaxy Halos)
Without the interference of a number of events, galaxies may suffer in crowded environments (e.g., stripping, harassment, strangulation); isolated elliptical galaxies provide a control sample for the study of galaxy formation. We present the study of a sample of isolated ellipticals using imaging from a variety of telescopes, focusing on their globular cluster systems as tracers of their stellar halos. Our main findings are: (a) GC color bimodality is common even in the most isolated systems; (b) the specific frequency of GCs is fairly constant with galaxy mass, without showing an increase towards high-mass systems like in the case of cluster ellipticals; (c) on the other hand, the red fraction of GCs follows the same inverted V shape trend with mass as seen in cluster ellipticals; and (d) the stellar halos show low Sérsic indices which are consistent with a major merger origin. View Full-Text
Keywords: galaxies: star clusters: general; galaxies: halos; galaxies: elliptical and lenticular; CD galaxies: star clusters: general; galaxies: halos; galaxies: elliptical and lenticular; CD
Show Figures

Figure 1

MDPI and ACS Style

Salinas, R.; Alabi, A.; Hammar, N.; Richtler, T.; Lane, R.R.; Schirmer, M. The Baryonic Halos of Isolated Elliptical Galaxies. Galaxies 2017, 5, 42.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop