Bibcode
Mármol-Queraltó, E.; Cardiel, N.; Gorgas, J.; Pedraz, S.; Cenarro, A. J.; Sánchez-Blázquez, P.; Peletier, R. F.; Vazdekis, A.
Referencia bibliográfica
II International GTC Workshop: Science with GTC 1st-light Instruments and the LMT (Eds. A. M. Hidalgo-Gámez, J. J. González, J. M. Rodríguez Espinosa, and S. Torres-Peimbert) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 24, pp. 258-259 (2005) (http://www.astroscu.unam.mx/~rmaa/)
Fecha de publicación:
12
2005
Número de citas
0
Número de citas referidas
0
Descripción
Stellar population synthesis models are crucial for the understanding of
the large amount of data which is being gathered for galaxies at low and
high redshift, and provide the only way to compare the ``real world''
with the theoretical framework. The best models require extensive
empirical stellar spectral libraries, which at present are starting to
be quite complete in the optical range. However the situation is
different in the near-infrared, which observational windows have been,
until recently, poorly exploited. This is specially due to the lack of
appropriate instrumentation. We present the preliminary results of an
ongoing observational program aimed to overcome this problem and to
provide a stellar library in the K band with the required coverage of
physical stellar parameters: effective temperature, gravity, metallicity
and non-solar abundance ratios. In particular, the CO feature at 2.3
μ m is a very promising spectroscopic line-strength index that will
help to face outstanding problems in galaxy formation and evolution. The
availability of this library will be essential to interpret the stellar
content of composite stellar populations with EMIR. In addition, this
library will be also useful for other purposes, like the study of highly
reddened objects, and the spectral classification of late type stars.