About the linearity of the color-magnitude relation of early-type galaxies in the Virgo Cluster

We revisit the color-magnitude relation of Virgo Cluster early-type galaxies in order to explore its alleged nonlinearity. To this aim, we reanalyze the relation already published from data obtained within the ACS Virgo Cluster Survey of the Hubble Space Telescope and perform our own photometry and...

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Detalles Bibliográficos
Autores principales:	Smith Castelli, Analía Viviana, González, Nélida Mabel, Faifer, Favio Raúl, Forte, Juan Carlos
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2013
Materias:	Ciencias Astronómicas galaxies: clusters: general galaxies: clusters: individual (Virgo) galaxies: dwarf galaxies: elliptical and lenticular, cD galaxies: photometry
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/85350
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-85350
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Astronómicas galaxies: clusters: general galaxies: clusters: individual (Virgo) galaxies: dwarf galaxies: elliptical and lenticular, cD galaxies: photometry
spellingShingle	Ciencias Astronómicas galaxies: clusters: general galaxies: clusters: individual (Virgo) galaxies: dwarf galaxies: elliptical and lenticular, cD galaxies: photometry Smith Castelli, Analía Viviana González, Nélida Mabel Faifer, Favio Raúl Forte, Juan Carlos About the linearity of the color-magnitude relation of early-type galaxies in the Virgo Cluster
topic_facet	Ciencias Astronómicas galaxies: clusters: general galaxies: clusters: individual (Virgo) galaxies: dwarf galaxies: elliptical and lenticular, cD galaxies: photometry
description	We revisit the color-magnitude relation of Virgo Cluster early-type galaxies in order to explore its alleged nonlinearity. To this aim, we reanalyze the relation already published from data obtained within the ACS Virgo Cluster Survey of the Hubble Space Telescope and perform our own photometry and analysis of the images of 100 early-type galaxies observed as part of this survey. In addition, we compare our results with those reported in the literature from data of the Sloan Digital Sky Survey. We have found that when the brightest galaxies and untypical systems are excluded from the sample, a linear relation arises in agreement with what is observed in other groups and clusters. The central regions of the brightest galaxies also follow this relation. In addition, we notice that Virgo contains at least four compact elliptical galaxies besides the well-known object VCC 1297 (NGC 4486B). Their locations in the 〈μeff〉-luminosity diagram define a trend different from that followed by normal early-type dwarf galaxies, setting an upper limit in effective surface brightness and a lower limit in the effective radius for their luminosities. Based on the distribution of different galaxy sub-samples in the color-magnitude and 〈μeff〉-luminosity diagrams, we draw some conclusions on their formation and the history of their evolution.
format	Articulo Articulo
author	Smith Castelli, Analía Viviana González, Nélida Mabel Faifer, Favio Raúl Forte, Juan Carlos
author_facet	Smith Castelli, Analía Viviana González, Nélida Mabel Faifer, Favio Raúl Forte, Juan Carlos
author_sort	Smith Castelli, Analía Viviana
title	About the linearity of the color-magnitude relation of early-type galaxies in the Virgo Cluster
title_short	About the linearity of the color-magnitude relation of early-type galaxies in the Virgo Cluster
title_full	About the linearity of the color-magnitude relation of early-type galaxies in the Virgo Cluster
title_fullStr	About the linearity of the color-magnitude relation of early-type galaxies in the Virgo Cluster
title_full_unstemmed	About the linearity of the color-magnitude relation of early-type galaxies in the Virgo Cluster
title_sort	about the linearity of the color-magnitude relation of early-type galaxies in the virgo cluster
publishDate	2013
url	http://sedici.unlp.edu.ar/handle/10915/85350
work_keys_str_mv	AT smithcastellianaliaviviana aboutthelinearityofthecolormagnituderelationofearlytypegalaxiesinthevirgocluster AT gonzaleznelidamabel aboutthelinearityofthecolormagnituderelationofearlytypegalaxiesinthevirgocluster AT faiferfavioraul aboutthelinearityofthecolormagnituderelationofearlytypegalaxiesinthevirgocluster AT fortejuancarlos aboutthelinearityofthecolormagnituderelationofearlytypegalaxiesinthevirgocluster
bdutipo_str	Repositorios
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About the linearity of the color-magnitude relation of early-type galaxies in the Virgo Cluster

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