Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis

We identify isolated galaxy triplets in a volume-limited sample from the Sloan Digital Sky Survey Data Release 10. Our final sample has 80 galaxy systems in the redshift range 0.04 ≤ z ≤ 0.1, brighter than Mr = -20.5 + 5 log h70. Spectral synthesis results and WHAN and BPT diagnostic diagrams were e...

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Autores principales:	Costa-Duarte, M.V., O'Mill, A.L., Duplancic, F., Sodré, L., Jr., Lambas, D.G.
Formato:	JOUR
Materias:	Galaxies: active Galaxies: evolution Galaxies: statistics Galaxies: stellar content
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00358711_v459_n3_p2539_CostaDuarte
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00358711_v459_n3_p2539_CostaDuarte
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spelling	todo:paper_00358711_v459_n3_p2539_CostaDuarte2023-10-03T14:47:16Z Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis Costa-Duarte, M.V. O'Mill, A.L. Duplancic, F. Sodré, L., Jr. Lambas, D.G. Galaxies: active Galaxies: evolution Galaxies: statistics Galaxies: stellar content We identify isolated galaxy triplets in a volume-limited sample from the Sloan Digital Sky Survey Data Release 10. Our final sample has 80 galaxy systems in the redshift range 0.04 ≤ z ≤ 0.1, brighter than Mr = -20.5 + 5 log h70. Spectral synthesis results and WHAN and BPT diagnostic diagrams were employed to classify the galaxies in these systems as star-forming, active nuclei, or passive/retired. Our results suggest that the brightest galaxies drive the triplet evolution, as evidenced by the strong correlations between properties as mass assembly and mean stellar population age with triplet properties. Galaxies with intermediate luminosity or the faintest one within the triplet seem to play a secondary role. Moreover, the relation between age and stellar mass of galaxies is similar for these galaxies but different for the brightest galaxy in the system. Most of the triplet galaxies are passive or retired, according to the WHAN classification. Low-mass triplets present different fractions of WHAN classes when compared to higher mass triplets. A census of WHAN class combinations shows the dominance of star-forming galaxies in low-mass triplets while retired and passive galaxies prevail in high-mass systems. We argue that these results suggest that the local environment, through galaxy interactions driven by the brightest galaxy, is playing a major role in triplet evolution. © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00358711_v459_n3_p2539_CostaDuarte
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: active Galaxies: evolution Galaxies: statistics Galaxies: stellar content
spellingShingle	Galaxies: active Galaxies: evolution Galaxies: statistics Galaxies: stellar content Costa-Duarte, M.V. O'Mill, A.L. Duplancic, F. Sodré, L., Jr. Lambas, D.G. Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis
topic_facet	Galaxies: active Galaxies: evolution Galaxies: statistics Galaxies: stellar content
description	We identify isolated galaxy triplets in a volume-limited sample from the Sloan Digital Sky Survey Data Release 10. Our final sample has 80 galaxy systems in the redshift range 0.04 ≤ z ≤ 0.1, brighter than Mr = -20.5 + 5 log h70. Spectral synthesis results and WHAN and BPT diagnostic diagrams were employed to classify the galaxies in these systems as star-forming, active nuclei, or passive/retired. Our results suggest that the brightest galaxies drive the triplet evolution, as evidenced by the strong correlations between properties as mass assembly and mean stellar population age with triplet properties. Galaxies with intermediate luminosity or the faintest one within the triplet seem to play a secondary role. Moreover, the relation between age and stellar mass of galaxies is similar for these galaxies but different for the brightest galaxy in the system. Most of the triplet galaxies are passive or retired, according to the WHAN classification. Low-mass triplets present different fractions of WHAN classes when compared to higher mass triplets. A census of WHAN class combinations shows the dominance of star-forming galaxies in low-mass triplets while retired and passive galaxies prevail in high-mass systems. We argue that these results suggest that the local environment, through galaxy interactions driven by the brightest galaxy, is playing a major role in triplet evolution. © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
format	JOUR
author	Costa-Duarte, M.V. O'Mill, A.L. Duplancic, F. Sodré, L., Jr. Lambas, D.G.
author_facet	Costa-Duarte, M.V. O'Mill, A.L. Duplancic, F. Sodré, L., Jr. Lambas, D.G.
author_sort	Costa-Duarte, M.V.
title	Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis
title_short	Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis
title_full	Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis
title_fullStr	Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis
title_full_unstemmed	Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis
title_sort	dissecting galaxy triplets in the sloan digital sky survey data release 10 - i. stellar populations and emission line analysis
url	http://hdl.handle.net/20.500.12110/paper_00358711_v459_n3_p2539_CostaDuarte
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Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis

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