ar X iv : a st ro - p h / 06 10 83 2 v 1 2 7 O ct 2 00 6 Chemical Evolution Models of Ellipticals and Bulges By

ar X iv : a st ro - p h / 06 10 83 2 v 1 27 O ct 2 00 6 Chemical Evolution Models of Ellipticals and Bulges

We review some of the models of chemical evolution of ellipticals and bulges of spirals. In particular, we focuse on the star formationn histories of ellipticals and their influence on chemical properties such as the [α/Fe] versus [Fe/H], galactic mass and visual magnitudes. By comparing models with observational properties, we can constrain the timescales for the formation of these galaxies. T...

ar X iv : a st ro - p h / 06 10 24 6 v 1 9 O ct 2 00 6 Special Features of Galactic Dynamics

ar X iv : a st ro - p h / 02 10 03 7 v 1 1 O ct 2 00 2 From Spirals to Low Surface Brightness galaxies

We show that simple models of the chemical and spectrophotometric evolution of galaxies can be used to explore the properties of present-day galaxies and especially the causes of the observed variety among disc galaxies. We focus on the link between " classical " spirals and Low Surface Brightness galaxies.

ar X iv : a st ro - p h / 98 10 37 6 v 1 2 2 O ct 1 99 8 Integrated Stellar Populations of Bulges : First Results

We present first results from an on-going survey of the stellar populations of the bulges and inner disks of spirals at various points along the Hubble sequence. In particular, we are investigating the hypotheses that bulges of early-type spirals are akin to (and may in fact originally have been) intermediate-luminosity ellipticals while bulges of late-type spirals are formed from dynamical ins...

ar X iv : a st ro - p h / 06 10 69 9 v 1 2 4 O ct 2 00 6 High resolution spectroscopy of halo stars within the spectral region 3550 – 5000 ÅÅ

High resolution echelle spectroscopy in ground-based UV is a powerful facility for study of chemical evolution of early Galaxy. An atlas of high resolution (R=60000) in the poor studied wavelength range 3550–5000 ÅÅ for 4 metal-deficient stars in the interval of metallicity −3.0 < [Fe/H ] < −0.6, effective temperature 4750 < Teff < 5900K, surface gravity 1.6 < lg g < 5.0 is produced. Details of...