... Globular clusters Globular clusters are spheroidal stellar systems with typical masses of some 105 - 106 solar masses ... solar masses, and massive star clusters are forming inside tidal arms, arcs, tails, and bridges; and these dwarf spheroidal ...
... result in the expansion of the stellar system; however, the law of this expansion ... kiloparsec compared to what is observed in the whole stellar system (Bezanson et al ...
... galaxies are painstakingly studied, they prove to be increasingly complex systems ... 34-long slit in the green using a spectrophotometric system at the Nasmyth-1 focus ...
... systems that have begun their formation in the early Universe at the same time, at z = 23, and have finished it differently: those that finished it quickly have a high average age of the stellar population and a high Mg/Fe ratio, and those where the star ...
... have di+erent magnesiumtoiron ratios : it is solar in NGC 6340 and the same as the ... stellar population and the presence of gas sub systems of obviously external origin ...
... the consistency of our index system with the Lick system by observing nine standard ... of the resulting index system with the Lick system is checked using seven stars from ...
... indices Hb, Mg b, Fe j5270, and Fe j5335 in the popular Lick system (Worthey et al. 1994) ; to check the consistency of our measurements with the model indices calculated in this system (Worthey 1994), we also observed stars from their list (Worthey et al ...