Observations of Barred Galaxies

J. Knapen

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    Abstract

    We review general observational properties of bars in galaxies, and relations between bars, their dynamics, and (circum)nuclear activity. We consider new measurements of bar fractions and of the distribution of bars with host type, bar strength, and bar pattern speeds. Bars redistribute material radially, leading to flattened abundance gradients and a diminished degree of disk-wide twofold symmetry in the distribution of star-forming regions. We discuss recent results in statistical correlations between bars and AGNs in samples of active and non-active galaxies, and on circumnuclear regions of star formation in the cores of barred galaxies. Finally, we review the limited, but promising, work published to date on bar fractions at cosmological distances, and list a number of issues where further observational progress should be expected.
    Original languageEnglish
    Title of host publicationIn: The Evolution of Galaxies on Cosmological Timescales, ASP Conf Series 187
    PublisherAstronomical Society of the Pacific
    Pages72-87
    ISBN (Print)1-58381-013-7
    Publication statusPublished - 1999

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