Near-Infrared Observations of Isophotal Twists in Barred Spiral Galaxies

Details Near-Infrared Observations of Isophotal Twists in Barred Spiral Galaxies Near-Infrared Observations of Isophotal Twists in Barred Spiral Galaxies

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....111.1880e&link_type=abstract

Astronomical Journal v.111, p.1880

Astronomy and Astrophysics

Astronomy

40

Galaxies: Kinematics And Dynamics, Galaxies: Spiral, Galaxies: Structure

Scientific paper

We present observations in JHK passbands for 12 barred galaxies and in BI passbands for 9 galaxies in order to study isophotal twists in early- and late-type barred spirals. We also summarize previous observations and examine high-resolution atlas images to compile data on twists as a function of Hubble type. Twists have been detected only in early-type spirals. This result is consistent with the hypothesis that only early- type bars have inner Lindblad resonances and that twists are associated with ILRs. The transition occurs around type SBbc and parallels the transition from bars with relatively flat intensity profiles to bars with exponential profiles in later types.

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