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Bright knots along spiral arms in disk galaxies

Published online by Cambridge University Press:  01 August 2006

P. Grosbøl  and
H. Dottori
P. Grosbøl
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, DE email: pgrosbol@eso.org
H. Dottori
Affiliation:
Instituto de Física, Univ. Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre, RS, BR email: dottori.voy@terra.com.br
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Abstract

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Many spiral galaxies show bright knots along their arms on high resolution K-band images. Spectroscopy of such knots suggests that they are very young stellar clusters which formation was triggered by a large-scale front associated to a density wave. We have studied a sample of around 80 disk galaxies (with i < 65°) for which deep K-band maps with a resolution of <1″ are available and present preliminary statistics of such bright knots.

Keywords

galaxies: spiralgalaxies: star clustersinfrared: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S237: Triggered Star Formation in a Turbulent ISM , August 2006 , pp. 416
Copyright
Copyright © International Astronomical Union 2007

References

Grosbøl, P. & Patsis, P.A. 1998, A & A 336, 840Google Scholar
Patsis, P.A., Héraudeau, P. & Grosbøl, P. 2001, A & A 370, 875CrossRefGoogle Scholar
Grosbøl, P., Dottori, H. & Gredel, R. 2006, A&A 453, L25Google Scholar