A&A 423, 867-880 (2004)
The Luminosity-Metallicity relation of distant luminous
Y. C. Liang1, 2, F. Hammer1, H. Flores1, D. Elbaz3, D. Marcillac3 and C. J. Cesarsky4
GEPI, Observatoire de Paris, Section de Meudon, 92195 Meudon Cedex, France
National Astronomical Observatories, Chinese Academy of Sciences, No. 20A Datun Road,
Chaoyang District, Beijing 100012, PR China
CEA, Saclay-Service d'Astrophysique, Orme des Merisiers, 91191
Gif-sur-Yvette Cedex, France
ESO, Karl-Schwarzschild Strasse 2, 85748 Garching bei Munchen, Germany
(Received 25 November 2003 / Accepted 26 April 2004)
One hundred and five 15
in three ISO (
) deep survey fields (CFRS 3
, UDSR and UDSF)
are studied on the basis of their high-quality optical spectra with resolution
~92 objects (88%) have secure redshifts, ranging from 0 to 1.16 with
a median value of
Considerable care is taken in estimating the extinction properties of individual
galaxy, which can seriously affect diagnostic diagrams and estimates of
star formation rates (SFRs) and of metal abundances. Two independent estimates of the extinction
have been made, e.g. Balmer line ratio and
energy balance between infrared (IR) and H
For most of the sources, we find a good agreement between the two extinction
0.64 rms in
, the extinction in V band), with median values of
) = 2.36 and
)= 1.82 for
>0.4 luminous IR galaxies (LIRGs).
>0.4, our sample show
many properties (IR luminosity, continuum color, ionization and extinction)
strikingly in common with those of local
(IRAS) LIRGs studied by Veilleux et al. (1995).
Thus, our sample can provide a good
representation of LIRGs in the distant Universe.
We confirm that most (
>77%) ISO 15
m-selected galaxies are dominated by star formation.
Oxygen abundances in interstellar medium in the galaxies
are estimated from the extinction-corrected
"strong" emission line ratios (e.g.
The derived 12+log(O/H) values range from 8.36 to 8.93 for the
with a median value of 8.67.
Distant LIRGs present a metal content less than half of that of the local
bright disks (i.e.
can be reproduced with infall models although one has to limit the infall time to avoid
overproduction of metals at late times. The models predict that total masses (gas + stars) of the distant LIRGs are
A significant fraction of distant large disks are indeed LIRGs.
Such massive disks could have formed ~50% of their metals and
stellar masses since
galaxies: abundances --
galaxies: evolution --
galaxies: ISM --
galaxies: photometry --
galaxies: spiral --
© ESO 2004