what's the frequency of the letter "s" in:
".
4.
we present infrared photometry of lmc stars taken from a region of 2.5° in right ascension from the denis (deep near infrared southern sky survey) survey.
we used isocam and isophot to observe the spectral energy distribution between 3.6 and 60 μm of agb stars in the small magellanic cloud detected by iras. cam-cvf spectra are made which enable us to establish the carbon- or oxygen-rich nature of the stars.
we are in the process of analysing this data using a radiative transfer model. this will provide us with accurate determinations of luminosity and mass loss rate. combining the results on the smc, lmc and galaxy we hope to address the open question of the metallicity dependencies of the mass loss rate. this in turn is important in the ejection of matter by agb stars into the interstellar medium.
we report here on a preliminary analysis of the denis new ir point source catalogue of the magellanic clouds. after subtracting the contribution of foreground stars we interpret the colour-colour diagrams and colour-magnitude diagrams that characterize the asymptotic giant branch (agb). the agb stars cause a clear bump in the luminosity function and they are distributed in two distinct regions, according to the spectral type (c-rich and o-rich), in the colour-luminosity diagram...
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The total number of "s"s in that passage is 80.
assistant