A supragalactic conundrum: The globular clusters colour pattern in Virgo galaxies

The presence of systematic modulations in the colour distributions in composite samples of globular clusters (GCs) associated with galaxies in the Virgo and Fornax clusters has been reported in a previous work. In this paper, we focus on the 27 brightest galaxies in Virgo, and in particular on NGC 4...

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Detalles Bibliográficos
Publicado: 2019
Materias:
Galaxies: star clusters: general
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v482_n1_p950_Forte
http://hdl.handle.net/20.500.12110/paper_00358711_v482_n1_p950_Forte
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00358711_v482_n1_p950_Forte
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spelling paper:paper_00358711_v482_n1_p950_Forte2023-06-08T15:01:50Z A supragalactic conundrum: The globular clusters colour pattern in Virgo galaxies Galaxies: star clusters: general The presence of systematic modulations in the colour distributions in composite samples of globular clusters (GCs) associated with galaxies in the Virgo and Fornax clusters has been reported in a previous work. In this paper, we focus on the 27 brightest galaxies in Virgo, and in particular on NGC 4486, the dominant system in terms of GC population. The new analysis includes ≈ 7600 cluster candidates brighter than g = 24.5 (or T1 ≈ 23.70). The results indicate the presence of the characteristic Virgo pattern in these galaxies and that this pattern is detectable over a galactocentric range from 3 to 30 kpc in NGC 4486. This finding gives more support to the idea that the pattern has been the result of an external, still not identified phenomenon, capable of synchronizing the cluster formation in a kind of viral process, and on supragalactic scales (also having, presumably, an impact on the overall star formation history in the entire Virgo cluster). © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. 2019 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v482_n1_p950_Forte http://hdl.handle.net/20.500.12110/paper_00358711_v482_n1_p950_Forte
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Galaxies: star clusters: general
spellingShingle Galaxies: star clusters: general
A supragalactic conundrum: The globular clusters colour pattern in Virgo galaxies
topic_facet Galaxies: star clusters: general
description The presence of systematic modulations in the colour distributions in composite samples of globular clusters (GCs) associated with galaxies in the Virgo and Fornax clusters has been reported in a previous work. In this paper, we focus on the 27 brightest galaxies in Virgo, and in particular on NGC 4486, the dominant system in terms of GC population. The new analysis includes ≈ 7600 cluster candidates brighter than g = 24.5 (or T1 ≈ 23.70). The results indicate the presence of the characteristic Virgo pattern in these galaxies and that this pattern is detectable over a galactocentric range from 3 to 30 kpc in NGC 4486. This finding gives more support to the idea that the pattern has been the result of an external, still not identified phenomenon, capable of synchronizing the cluster formation in a kind of viral process, and on supragalactic scales (also having, presumably, an impact on the overall star formation history in the entire Virgo cluster). © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.
title A supragalactic conundrum: The globular clusters colour pattern in Virgo galaxies
title_short A supragalactic conundrum: The globular clusters colour pattern in Virgo galaxies
title_full A supragalactic conundrum: The globular clusters colour pattern in Virgo galaxies
title_fullStr A supragalactic conundrum: The globular clusters colour pattern in Virgo galaxies
title_full_unstemmed A supragalactic conundrum: The globular clusters colour pattern in Virgo galaxies
title_sort supragalactic conundrum: the globular clusters colour pattern in virgo galaxies
publishDate 2019
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v482_n1_p950_Forte
http://hdl.handle.net/20.500.12110/paper_00358711_v482_n1_p950_Forte
_version_ 1768542637113999360

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