Scaling relations for globular cluster systems in early-type galaxies
| Autor: | A. I. Ennis, Lilia Patricia Bassino, Bruno Javier de Bórtoli, Juan Pablo Caso |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
HALOES OF GALAXIES
Ciencias Astronómicas haloes [Galaxies] star clusters: general [Galaxies] FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics elliptical and lenticular cD [Galaxies] ELLIPTICAL GALAXIES purl.org/becyt/ford/1 [https] Astrophysics::Solar and Stellar Astrophysics Galaxies: haloes Galaxies: star clusters: general GLOBULAR CLUSTERS Astrophysics::Galaxy Astrophysics Physics Galaxies: evolution Astronomy and Astrophysics purl.org/becyt/ford/1.3 [https] evolution [Galaxies] Astrophysics - Astrophysics of Galaxies Galaxy Early type Galaxies: elliptical and lenticular cD Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Globular cluster Elliptical galaxy EVOLUTION OF GALAXIES Astrophysics::Earth and Planetary Astrophysics |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP |
| ISSN: | 1365-2966 0035-8711 |
| Popis: | The formation and growth of globular cluster systems (GCSs) is closely related to the evolutionary processes experienced by their host galaxies. In particular, their radial distributions scale with several properties of the galaxies and their haloes. We performed a photometric study, by means of HST/ACS archival data of several intermediate luminosity galaxies located in low-density environments. It was supplemented with available photometric data of GCSs from the Virgo and Fornax clusters, resulting in a sample of almost 30 GCSs for which we fitted their radial profiles. The resulting overall properties agree with those from previous studies, as we found that the effective radius, extension, and concentration of the GCS radial profiles correlate with the stellar mass, effective radius, and number of globular clusters, presenting in some cases a bilinear relation. The extension also correlates with the central velocity dispersion for central galaxies, but not for satellites. From a statistical comparison with numerical simulations we obtained good agreement between the effective radius and extension of the GCS scale with the effective and virial radius of the haloes, respectively. Finally, we analysed these results in the literature context. Facultad de Ciencias Astronómicas y Geofísicas |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|