A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system

We present the first photometric study of the globular cluster system (GCS) of the E galaxy NGC 3613 (MV = −21.5, d∼ 30.1 Mpc), as well as the surface photometry of the host galaxy, based on Gemini/GMOS images. Being considered the central galaxy of a group, NGC 3613 inhabits a low-density environme...

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Autores principales: De Bórtoli, Bruno Javier, Bassino, Lilia Patricia, Caso, Juan Pablo, Ennis, Ana Inés
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Astronómicas
galaxies: clusters: individual: NGC 3613
galaxies: elliptical and lenticular, cD
galaxies: evolution
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124458
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124458
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
galaxies: clusters: individual: NGC 3613
galaxies: elliptical and lenticular, cD
galaxies: evolution
spellingShingle Ciencias Astronómicas
galaxies: clusters: individual: NGC 3613
galaxies: elliptical and lenticular, cD
galaxies: evolution
De Bórtoli, Bruno Javier
Bassino, Lilia Patricia
Caso, Juan Pablo
Ennis, Ana Inés
A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system
topic_facet Ciencias Astronómicas
galaxies: clusters: individual: NGC 3613
galaxies: elliptical and lenticular, cD
galaxies: evolution
description We present the first photometric study of the globular cluster system (GCS) of the E galaxy NGC 3613 (MV = −21.5, d∼ 30.1 Mpc), as well as the surface photometry of the host galaxy, based on Gemini/GMOS images. Being considered the central galaxy of a group, NGC 3613 inhabits a low-density environment although its intrinsic brightness is similar to the expected one for galaxies in the centre of clusters. The following characteristics are obtained for this GCS. The colour distribution is bimodal, with metal-poor globular clusters (GCs) getting slightly bluer with increasing radius. The radial and azimuthal projected distributions show that metal-rich GCs are more concentrated towards the host galaxy and trace its light distribution very precisely, while metal-poor GCs present a more extended and uniform distribution. The GC luminosity function helps validate the adopted distance. The estimated total GC population of Ntot = 2075 ± 130 leads to a specific frequency SN = 5.2 ± 0.7, a value within the expected range for GCSs with host galaxies of similar luminosity. The surface photometry of NGC 3613 reveals a three-component profile and a noticeable substructure. Finally, a small sample of ultra-compact dwarf (UCD) candidates are identified in the surroundings of the host galaxy.
format Articulo
Preprint
author De Bórtoli, Bruno Javier
Bassino, Lilia Patricia
Caso, Juan Pablo
Ennis, Ana Inés
author_facet De Bórtoli, Bruno Javier
Bassino, Lilia Patricia
Caso, Juan Pablo
Ennis, Ana Inés
author_sort De Bórtoli, Bruno Javier
title A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system
title_short A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system
title_full A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system
title_fullStr A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system
title_full_unstemmed A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system
title_sort gemini/gmos study of the bright elliptical galaxy ngc 3613 and its globular cluster system
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/124458
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