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NGC 1052: a LINER with strong stellar Mg/Fe gradient

Published online by Cambridge University Press:  24 November 2004

André Milone  and
Miriani Pastoriza
André Milone
Affiliation:
Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, Brazil e-mail: [email protected]
Miriani Pastoriza
Affiliation:
Instituto de Física, Universidade Federal do Rio Grande do Sul, Brazil e-mail: [email protected]
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Abstract

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We analyze long slit spectroscopy of NGC 1052, the third brightest member of a group of eleven galaxies. This elliptical is a typical LINER with a stellar rotating disk. We have found a strong negative radial gradient of the abundance ratio Mg/Fe, which suggests an enhancement of α-elements particulary towards the nuclear region, and higher metallicity and age at the galactic nucleus too. We have measured the Lick line-strength indices along the major axis of the galaxy. This information, together with single-aged stellar population models of Thomas et al. (2003), was used to determine the star formation history of NGC 1052.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

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POSTERS
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 193 - 194
Copyright
© 2004 International Astronomical Union