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Title:
Globular Clusters in the Galactic Bulge
Authors:
Bica, E.; Ortolani, S.; Barbuy, B.
Affiliation:
AA(Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre 91501-970, Brazil), AB(Dipartimento di Fisica e Astronomia, Università di Padova, I-35122 Padova, Italy; INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy), AC(Universidade de São Paulo, IAG, Rua do Matão 1226, Cidade Universitária, São Paulo 05508-900, Brazil)
Publication:
Publications of the Astronomical Society of Australia, Volume 33, id.e028 14 pp. (PASA Homepage)
Publication Date:
06/2016
Origin:
CUP
Astronomy Keywords:
galaxy: bulge, galaxy: globular clusters
Abstract Copyright:
2016: Astronomical Society of Australia
DOI:
10.1017/pasa.2015.47
Bibliographic Code:
2016PASA...33...28B

Abstract

A view of the Galactic bulge by means of their globular clusters is fundamental for a deep understanding of its formation and evolution. Connections between the globular cluster and field star properties in terms of kinematics, orbits, chemical abundances, and ages should shed light on different stellar population components. Based on spatial distribution and metallicity, we define a probable best list of bulge clusters, containing 43 entries. Future work on newly discovered objects, mostly from the VVV survey, is suggested. These candidates might alleviate the issue of missing clusters on the far side of the bulge. We discuss the reddening law affecting the cluster distances towards the centre of the Galaxy, and conclude that the most suitable total-to-selective absorption value appears to be R V=3.2, in agreement with recent analyses. An update of elemental abundances for bulge clusters is provided.
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