The disruption of the low-mass globular cluster E 3-Reference-Cited by-同舟云学术

The disruption of the low-mass globular cluster E 3

Published:2020-09-21 Issue:2 Volume:499 Page:2157-2161
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Carballo-Bello Julio A¹^ORCID,Salinas Ricardo²^ORCID,Piatti Andrés E³⁴^ORCID

Affiliation:

1. Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, Arica, Chile

2. Gemini Observatory/NSF’s NOIRLab, Casilla 603, La Serena, Chile

3. Instituto Interdisciplinario de Ciencias Básicas (ICB), CONICET-UNCUYO, Padre J. Contreras 1300, M5502JMA Mendoza, Argentina

4. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, C1425FQB Buenos Aires, Argentina

Abstract

ABSTRACT We use Gaia DR2 photometry and proper motions to search for the hypothetical tidal tails of the Galactic globular cluster E 3. Using a modified version of a classical decontamination procedure, we are able to identify the presence of an extended structure emerging from the cluster up to r ∼ 1 deg from its centre, thus suggesting that this poorly studied cluster is undergoing a tidal disruption process. These low surface brightness structures are aligned with the direction to the Galactic centre, as expected for a cluster close to its perigalacticon. Different scenarios to explain the important amount of mass lost by this cluster are discussed.

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

http://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/staa2864/33777509/staa2864.pdf

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