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Abstract:

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.

Registro:

Documento: Artículo
Título:Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis
Autor:Costa-Duarte, M.V.; O'Mill, A.L.; Duplancic, F.; Sodré, L., Jr.; Lambas, D.G.
Filiación:Departamento de Astronomia, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, Cidade Universitária, Rua do Matão 1226, São Paulo, Brazil
Instituto de Astronomía Teórica y Experimental, IATE, Observatorio Astronómico, Universidad Nacional de Córdoba, Laprida 854, Córdoba, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, Buenos Aires, Argentina
Departamento de Geofísica y Astronomía - Facultad de Ciencias Exactas, Físicas y Naturales - Universidad Nacional de San Juan, San Juan, Argentina
Palabras clave:Galaxies: active; Galaxies: evolution; Galaxies: statistics; Galaxies: stellar content
Año:2016
Volumen:459
Número:3
Página de inicio:2539
Página de fin:2549
DOI: http://dx.doi.org/10.1093/mnras/stw816
Título revista:Monthly Notices of the Royal Astronomical Society
Título revista abreviado:Mon. Not. R. Astron. Soc.
ISSN:00358711
CODEN:MNRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v459_n3_p2539_CostaDuarte

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Citas:

---------- APA ----------
Costa-Duarte, M.V., O'Mill, A.L., Duplancic, F., Sodré, L., Jr. & Lambas, D.G. (2016) . Dissecting galaxy triplets in the Sloan Digital Sky Survey Data Release 10 - I. Stellar populations and emission line analysis. Monthly Notices of the Royal Astronomical Society, 459(3), 2539-2549.
http://dx.doi.org/10.1093/mnras/stw816
---------- CHICAGO ----------
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" . Monthly Notices of the Royal Astronomical Society 459, no. 3 (2016) : 2539-2549.
http://dx.doi.org/10.1093/mnras/stw816
---------- MLA ----------
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" . Monthly Notices of the Royal Astronomical Society, vol. 459, no. 3, 2016, pp. 2539-2549.
http://dx.doi.org/10.1093/mnras/stw816
---------- VANCOUVER ----------
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. Mon. Not. R. Astron. Soc. 2016;459(3):2539-2549.
http://dx.doi.org/10.1093/mnras/stw816