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Box/Peanut Galaxies in the Near-IR

Published online by Cambridge University Press:  12 April 2016

S. M. Baggett  and
J. W. MacKenty
S. M. Baggett
Affiliation:
STScI, 3700 San Martin Dr., Baltimore, MD 21218
J. W. MacKenty
Affiliation:
STScI, 3700 San Martin Dr., Baltimore, MD 21218

Extract

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Galaxies with box/peanut-shaped (b/p) bulges have been known for some time (e.g., NGC 128 and NGC 7332 (Sandage 1961)). Observationally, b/p features are detected in edge-on systems, and are visible in images, contour maps, and brightness profiles as isophote sections that near minor axis are relatively flat and parallel to major axis (see Figure 1). Peanut-type bulges have isophotes indented at the intersection with the minor axis.

There have been several morphological surveys to date. The two most recent studies have found that about 20% of early-type galaxies and nearly 45% of all disk galaxies are b/p galaxies (see Shaw 1987, Dettmar 1989, and references therein) and that the b/p galaxy properties appear similar to normal spirals in the optical, radio, and infrared. A few kinematical studies have been done: b/p bulges are found to rotate more like disks than bulges (e.g., 150 km s−1 up to 6 kpc above the plane in NGC 128 (Jarvis 1990) and the velocities remain constant up to large z, implying cylindrical rotation (e.g., NGC 3079 has v constant out to 1.6 kpc (Shaw et al. 1993)).

Type
Posters for Part III and Part IV
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 224 - 226
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

Baggett, S.M., Ph.D. Thesis 1993, New Mexico State University Google Scholar
Combes, F. & Sanders, R.H. 1981, A&A, 96, 164 Google Scholar
Combes, F., Debbasch, F., Friedli, D., & Pfenniger, D. 1990, A&A, 233, 82 Google Scholar
Dettmar, R.-J. 1989, in The World of Galaxies,Corwin, H.C. & Bottinelli, L., Berlin: Springer-Verlag, 229 CrossRefGoogle Scholar
Dettmar, R.-J. & Barteldrees, A. 1990, in ESO Bulges of Galaxies Conference and Workshop Proceedings, No.35, 259 Google Scholar
de Souza, R.E. & dos Anjos, S. 1987, A&AS, 70, 465 Google Scholar
Hamabe, M. & Wakamatsu, K. 1989, ApJ, 339, 783 Google Scholar
Jarvis, B. 1990, in Dynamics and Interactions of Galaxies, Roland Wielen, Berlin: Springer-Verlag, 416 Google Scholar
Pfenniger, D. & Friedli, D. 1991, A&A, 252, 75 Google Scholar
Sandage, A. 1961, The Hubble Atlas of Galaxies, Washington, D.C.: Carnegie Institute of Washington, Publication 618 Google Scholar
Shaw, M.A. 1987, MNRAS, 229, 691 CrossRefGoogle Scholar
Shaw, M., Wilkinson, A., & Carter, D. 1993, A&A, 268, 511 Google Scholar