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        Age dating a starburst: Gemini/CIRPASS observations of the core of M 83

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        102686.pdf (PDF, 150Kb)
        Author
        Ryder, S.D.
        Knapen, J.
        Mazzuca, L.M.
        Sharp, R.G.
        Parry, I.R.
        Attention
        2299/1451
        Abstract
        The circumnuclear starburst in NGC 5236 (M 83) has been studied photometrically by Harris et al. (2001) using HST/WFPC2 images in the broad-band near-UV and optical, as well as narrow-band H® and H¯ to derive colors and line equivalent widths for 45 clusters. Despite the excellent spatial resolution of these observations, optical photometric analyses such as this su®er from: (i) patchy (and not easily quanti¯able) dust extinction; (ii) the fact that the reddening vector parallels the evolutionary tracks in a two-color diagram; and (iii) selection e®ects, which tend to exclude the very youngest (t < 5 Myr) clusters which have strong emission lines, but only a weak stellar continuum. Additionally, it is not possible to distinguish an instantaneous burst of star formation from a constant star formation rate, on the basis of broad-band colors alone. [opening paragraph]
        Publication date
        2004
        Published in
        In: The Neutral ISM in Starburst Galaxies - ASP Conference Series 320
        Other links
        http://hdl.handle.net/2299/1451
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