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dc.contributor.author
Mesa, Valeria Alejandra
dc.contributor.author
Alonso, Sol
dc.contributor.author
Coldwell Lloveras, Georgina Vanesa
dc.contributor.author
Garcia Lambas, Diego Rodolfo
dc.contributor.author
Nilo Castellon, J. L
dc.date.available
2022-02-24T11:07:04Z
dc.date.issued
2021-02
dc.identifier.citation
Mesa, Valeria Alejandra; Alonso, Sol; Coldwell Lloveras, Georgina Vanesa; Garcia Lambas, Diego Rodolfo; Nilo Castellon, J. L; Satellites and central galaxies in SDSS: The influence of interactions on their properties; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 501; 1; 2-2021; 1046-1058
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/152640
dc.description.abstract
We use SDSS-DR14 to construct a sample of galaxy systems consisting of a central object and two satellites. We adopt projected distance and radial velocity difference criteria and impose an isolation criterion to avoid membership in larger structures. We also classify the interaction between the members of each system through a visual inspection of galaxy images, finding ${sim}80{{ m per cent}}$ of the systems lack evidence of interactions whilst the remaining ${sim}20{{ m per cent}}$ involve some kind of interaction, as inferred from their observed distorted morphology. We have considered separately, samples of satellites and central galaxies, and each of these samples were tested against suitable control sets to analyse the results. We find that central galaxies showing signs of interactions present evidence of enhanced star formation activity and younger stellar populations. As a counterpart, satellite samples show these galaxies presenting older stellar populations with a lower star formation rate than the control sample. The observed trends correlate with the stellar mass content of the galaxies and with the projected distance between the members involved in the interaction. The most massive systems are less affected since they show no star formation excess, possibly due to their more evolved stage and less gas available to form new stars. Our results suggest that it is arguably a transfer of material during interactions, with satellites acting as donors to the central galaxy. As a consequence of the interactions, satellite stellar population ages rapidly and new bursts of star formation may frequently occur in the central galaxy.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GALAXIES: GENERAL
dc.subject
GALAXIES: INTERACTIONS
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GALAXIES: STATISTICS
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Satellites and central galaxies in SDSS: The influence of interactions on their properties
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-02-22T17:06:58Z
dc.journal.volume
501
dc.journal.number
1
dc.journal.pagination
1046-1058
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Mesa, Valeria Alejandra. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Alonso, Sol. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina
dc.description.fil
Fil: Coldwell Lloveras, Georgina Vanesa. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina
dc.description.fil
Fil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
dc.description.fil
Fil: Nilo Castellon, J. L. Universidad de La Serena; Chile
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/501/1/1046/6012842
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/staa3720
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