Volume 445, Number 1, January I 2006
|Page(s)||79 - 91|
|Published online||13 December 2005|
Nearby early-type galaxies with ionized gas
II. Line-strength indices for 18 additional galaxies
SISSA, via Beirut 4, 34014 Trieste, Italy e-mail: firstname.lastname@example.org, email@example.com
2 INAF – Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, 35122 Padova, Italy
3 Institut für Astronomie der Universität Wien, Türkenschanzstraße 17, 1180 Wien, Austria
Accepted: 4 August 2005
We previously presented a data-set of line-strength indices for 50 early-type galaxies in the nearby Universe. The galaxy sample is biased toward galaxies showing emission lines, located in environments corresponding to a broad range of local galaxy densities, although predominantly in low density environments. The present addendum enlarges the above data-set of line-strength indices by analyzing 18 additional early-type galaxies (three galaxies, NGC 3607, NGC 5077 and NGC 5898 were presented in the previous set). We measured 25 line-strength indices, defined by the Lick IDS “standard” system (Trager et al. 1998, ApJS, 116, 1; Worthey & Ottaviani 1997, ApJS, 111, 377), for 7 luminosity weighted apertures and 4 gradients of each galaxy. This addendum presents the line-strength data-set and compares it with the available data in the literature.
Key words: galaxies: elliptical and lenticular, cD / galaxies: fundamental parameters / galaxies: formation / galaxies: evolution
© ESO, 2005
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