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Photometric and spectroscopic study of cD galaxies

Published online by Cambridge University Press:  07 March 2016

S. N. Kemp ,
Ernesto Pérez-Hernández  and
Víctor Hugo Ramírez-Siordia
S. N. Kemp
Affiliation:
Instituto de Astronomía y Meteorología, Universidad de Guadalajara, Av. Vallarta 2602, Col. Arcos Vallarta, 44130, Guadalajara, Jalisco, México email: [email protected]
Ernesto Pérez-Hernández
Affiliation:
Instituto de Astronomía y Meteorología, Universidad de Guadalajara, Av. Vallarta 2602, Col. Arcos Vallarta, 44130, Guadalajara, Jalisco, México email: [email protected]
Víctor Hugo Ramírez-Siordia
Affiliation:
Instituto de Astronomía y Meteorología, Universidad de Guadalajara, Av. Vallarta 2602, Col. Arcos Vallarta, 44130, Guadalajara, Jalisco, México email: [email protected] Centro de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, Campus Morelia, Apartado Postal 3-72, 58090, Morelia, Michoacán, México
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Abstract

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We have carried out photometry and spectroscopy on a sample of 10 cD galaxies. The photometry shows, in general, fairly flat and red profile colours, implying an envelope with the same stellar population as the central galaxy. This may indicate a possible primordial origin for both structures, consistent with ideas of downsizing. Preliminary spectroscopic results are generally in agreement with the photometry, with for example younger populations at large radii for A2199, but A2589 has only younger populations.

Keywords

galaxies: evolutiongalaxies: formationgalaxies: stellar content
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S312: Star Clusters and Black Holes in Galaxies across Cosmic Time , August 2014 , pp. 86 - 88
Copyright
Copyright © International Astronomical Union 2016 

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