Bibcode
DOI
Yamada, Y.; Arimoto, N.; Vazdekis, A.; Peletier, R. F.
Referencia bibliográfica
The Astrophysical Journal, Volume 637, Issue 1, pp. 200-213.
Fecha de publicación:
1
2006
Revista
Número de citas
51
Número de citas referidas
43
Descripción
We have determined spectroscopic ages of elliptical galaxies in the
Virgo Cluster using spectra of very high signal-to-noise ratio
(S/N>100 Å-1). We observed eight galaxies with the
Subaru Telescope and have combined this sample with six galaxies
previously observed with the WHT. To determine their ages, we have used
a new method based on the Hγσ age indicator,
which is virtually independent of the effects of metallicity. Apart from
ages we have estimated abundances of various elements. In this paper we
present the observations, the data reduction, and the reliability of the
Hγσ method. The results of this investigation are
presented in a companion paper.