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The star formation efficiency in Stephan's Quintet intragroup regions

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arxiv 1203.3436 v1 pith:PK2SBBA3 submitted 2012-03-15 astro-ph.CO

The star formation efficiency in Stephan's Quintet intragroup regions

G. Natale , R. J. Tuffs , C. K. Xu , C. C. Popescu , J. Fischera , U. Lisenfeld , N. Lu , P. Appleton
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M. Dopita P.-A. Duc Y. Gao W. Reach J. Sulentic M. Yun
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keywords formationstarefficiencyquintetregionsstephanauthorsbright
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We investigated the star formation efficiency for all the dust emitting sources in Stephan's Quintet (SQ). We inferred star formation rates using Spitzer MIR/FIR and GALEX FUV data and combined them with gas column density measurements by various authors, in order to position each source in a Kennicutt-Schmidt diagram. Our results show that the bright IGM star formation regions in SQ present star formation efficiencies consistent with those observed within local galaxies. On the other hand, star formation in the intergalactic shock region seems to be rather inhibited.

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