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Exponential bulges and antitruncated disks in lenticular galaxies

Published online by Cambridge University Press:  01 June 2008

Olga K. Sil'chenko
Olga K. Sil'chenko*
Affiliation:
Sternberg Astronomical Institute, Moscow 119991, Russia email: [email protected]
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Abstract

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The presence of exponential bulges and anti-truncated disks has been noticed in many lenticular galaxies. In fact, it could be expected because the very formation of S0 galaxies includes various processes of secular evolution. We discuss how to distinguish between a pseudobulge and an anti-truncated disk, and also what particular mechanisms may be responsible for the formation of anti-truncated disks. Some clear examples of lenticular galaxies with a multi-tier exponential stellar structure are presented, – among them two central group giant S0s seen face-on and perfectly axisymmetric.

Keywords

Galaxies: elliptical and lenticular, cDgalaxies: bulgesgalaxies: disksgalaxies: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Issue S254: The Galaxy Disk in Cosmological Context , June 2008 , pp. 173 - 178
Copyright
Copyright © International Astronomical Union 2009

References

Afanasiev, V. L. & Sil'chenko, O. K. 2002, AJ 124, 706CrossRefGoogle Scholar
Afanasiev, V. L. & Moiseev, A. V. 2005, Astronomy Letters 31, 194CrossRefGoogle Scholar
Andredakis, Y. C., Peletier, R. F., & Balcells, M. 1995, MNRAS 275, 874CrossRefGoogle Scholar
Baggett, W. E., Baggett, S. M., & Anderson, K. S. J. 1998, AJ 116, 1626CrossRefGoogle Scholar
Emsellem, E., Cappellari, M., Peletier, R. F., et al. 2004, MNRAS 352, 721CrossRefGoogle Scholar
Erwin, P., Pohlen, M., Beckman, J. E., Gutiérrez, L., & Aladro, R. 2008, in: Knapen, J. H., Mahoney, T.J., & Vazdekis, A. (eds.), Pathways through an Eclectic Universe. ASP Conf. Ser. v. 390 (San Francisco), p. 251Google Scholar
Erwin, P., Pohlen, M., & Beckman, J. E. 2008, AJ 135, 20CrossRefGoogle Scholar
Freeman, K. C. 1970, ApJ 160, 811CrossRefGoogle Scholar
Graham, A. W. 2001, MNRAS 326, 543CrossRefGoogle Scholar
Kormendy, J. 1982, in: Martinet, L. & Mayor, M. (eds.), Morphology and Dynamics of Galaxies, Twelfth Advanced Course of the Swiss Society of Astronomy and Astrophysics (Sauverny: Geneva Obs.), p. 113Google Scholar
Kormendy, J. 1982, ApJ 257, 75CrossRefGoogle Scholar
Kormendy, J. 1993, in: Habing, H. & Dejonghe, H. (eds.), Galactic Bulges. IAU Symp. 153 (Dordrecht: Kluwer), p. 209CrossRefGoogle Scholar
Laurikainen, E., Salo, H., & Buta, R. 2005, MNRAS 362, 1319CrossRefGoogle Scholar
Laurikainen, E., Salo, H., Buta, R., & Knapen, J. H. 2007, MNRAS 381, 401CrossRefGoogle Scholar
Pfenniger, D. & Friedli, D. 1991, A& A 252, 75Google Scholar
Pohlen, M. & Trujillo, I. 2006, A& A 454, 759Google Scholar
Sil'chenko, O. K., Burenkov, A. N., & Vlasyuk, V. V. 1998, New Astronomy 3, 15CrossRefGoogle Scholar
Sil'chenko, O. K. & Afanasiev, V. L. 2000, A& A 364, 479Google Scholar
Sil'chenko, O. K., Vlasyuk, V. V., & Alvarado, F. 2001, AJ 121, 2499CrossRefGoogle Scholar
Sil'chenko, O. K., Koposov, S. E., Vlasyuk, V. V., & Spiridonova, O. I. 2003, Astronomy Reports 47, 88CrossRefGoogle Scholar
Sil'chenko, O. K. & Moiseev, A. V. 2006, AJ 131, 1336CrossRefGoogle Scholar
Worthey, G. 1994, ApJS 95, 107CrossRefGoogle Scholar
Younger, J. D., Cox, T. J., Seth, A. C., & Hernquist, L. 2007, ApJ 670, 269CrossRefGoogle Scholar