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, M. Dopita, P.-A. Duc, Y. Gao, W. Reach, J., Sulentic, M. Yun
TL;DR
This study examines star formation efficiency in Stephan's Quintet, revealing that intergalactic regions have efficiencies similar to local galaxies, while shock regions show inhibited star formation.
Contribution
It provides the first detailed comparison of star formation efficiency across different regions in Stephan's Quintet using multi-wavelength data.
Findings
IGM star formation regions have efficiencies similar to local galaxies.
Star formation in the shock region appears to be suppressed.
Different intragroup regions exhibit varying star formation efficiencies.
Abstract
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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Taxonomy
TopicsAstrophysics and Star Formation Studies · Astronomy and Astrophysical Research · Galaxies: Formation, Evolution, Phenomena