Hostname: page-component-8448b6f56d-tj2md Total loading time: 0 Render date: 2024-04-18T23:49:12.162Z Has data issue: false hasContentIssue false
  • English
  • Français

Galaxy scaling relations from the ACS Virgo and Fornax Cluster Surveys: no evidence for a dwarf-giant dichotomy

Published online by Cambridge University Press:  01 July 2007

Patrick Côté ,
Laura Ferrarese ,
Andrés Jordán ,
John P. Blakeslee ,
Chin-Wei Chen ,
Leopoldo Infante ,
Simona Mei ,
Eric W. Peng ,
John L. Tonry  and
Michael J. West
Patrick Côté
Affiliation:
Herzberg Institute of Astrophysics, Victoria, BC, Canada
Laura Ferrarese
Affiliation:
Herzberg Institute of Astrophysics, Victoria, BC, Canada
Andrés Jordán
Affiliation:
European Southern Observatory, Garching, Germany
John P. Blakeslee
Affiliation:
Washington State University, Pullman, WA, U.S.A.
Chin-Wei Chen
Affiliation:
Herzberg Institute of Astrophysics, Victoria, BC, Canada National Central University, Jhongli, Taiwan
Leopoldo Infante
Affiliation:
Pontificia Universidad Católica de Chile, Santiago, Chile
Simona Mei
Affiliation:
Observatoire de Paris, Paris, France
Eric W. Peng
Affiliation:
Herzberg Institute of Astrophysics, Victoria, BC, Canada
John L. Tonry
Affiliation:
Institute for Astronomy, Honolulu, HI, U.S.A.
Michael J. West
Affiliation:
European Southern Observatory, Garching, Germany
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We examine the photometric and structural properties of early-type galaxies derived from the ACS Virgo and Fornax Cluster Surveys, supplementing these data with previously published or newly reanalysed data for additional early-type galaxies in Virgo, Fornax and the Local Group. As we have noted elsewhere, Sérsic models are found to provide accurate representations of the observed brightness profiles on scales greater than a few percent of the effective radius, Re. On smaller scales, the brightness profiles of bright (MB ≳ −20) galaxies show central deficits with respect to the inward extrapolation of the Sérsic models; fainter galaxies usually show central excesses. Fainter than MB ≈ −20, we find a continuity in the photometric and structural scaling relations: i.e., between absolute magnitude, central surface brightness, Sérsic index, effective radius, and the surface brightness measured at, and averaged within, the effective radius. There is no evidence for a “dwarf/giant dichotomy” — a conclusion consistent with a number of recent studies but contrary to some earlier claims.

Keywords

galaxies: elliptical and lenticularcD – galaxies: fundamental parameters – galaxies: nuclei – galaxies: photometry – galaxies: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 395 - 398
Copyright
Copyright © International Astronomical Union 2008

References

Aguerri, , et al. 2005, AJ, 130, 475CrossRefGoogle Scholar
Binggeli, B., Sandage, A., & Tammann, G. A. 1985, AJ, 90, 1681CrossRefGoogle Scholar
Binggeli, B., Sandage, A., & Terenghi, M. 1984, AJ, 89, 64CrossRefGoogle Scholar
Caldwell, N. 1983, AJ, 88, 804CrossRefGoogle Scholar
Caldwell, N. 1987, AJ, 94, 1116CrossRefGoogle Scholar
Côté, P., et al. 2004, ApJS, 153, 223 (ACSVCS Paper I)CrossRefGoogle Scholar
Côté, P., et al. 2006, ApJS, 165, 57 (ACSVCS Paper VIII)CrossRefGoogle Scholar
Côté, P., et al. 2007, ApJ, in press (ACSFCS Paper II)Google Scholar
Ferguson, H. C. 1989, AJ, 98, 367CrossRefGoogle Scholar
Ferrarese, L., et al. 2006a, ApJ, 164, 334 (ACSVCS Paper VI)Google Scholar
Ferrarese, L., et al. 2006b, ApJ, 644, L21CrossRefGoogle Scholar
Ferrarese, L., et al. 2006c, arXiv:astro-ph/0612139Google Scholar
Ford, H. C., et al. 1998, Proc. SPIE, 3356, 234CrossRefGoogle Scholar
Graham, A. W., et al. 2003a, AJ, 125, 2936CrossRefGoogle Scholar
Graham, A. W., et al. 2003b, AJ, 125, 2951CrossRefGoogle Scholar
Graham, A. W. & Guzmán, R. 2003, AJ, 125, 2936CrossRefGoogle Scholar
Gavazzi, G., et al. 2005, A&A, 430, 411Google Scholar
Jerjen, H. & Binggeli, B. 1997, in ASP Conference Series, Vol. 116, p. 239CrossRefGoogle Scholar
Jordán, A., et al. 2007, ApJS, 169, 213 (ACSFCS Paper I)CrossRefGoogle Scholar
Kormendy, J. 1985, ApJ, 295, 73CrossRefGoogle Scholar
McConnachie, A. W. & Irwin, M. J. 2006, MNRAS, 365, 1263CrossRefGoogle Scholar
Mei, S., et al. 2007, ApJ, 655, 144 (ACSVCS Paper XIII)CrossRefGoogle Scholar
Sérsic, J.-L. 1968, Atlas de Galaxias Australes (Córdoba: Obs. Astron., Univ. Nac. Córdova)Google Scholar
Stiavelli, M., et al. 2001, AJ, 121, 1385CrossRefGoogle Scholar
Zibetti, S., et al. 2005, in IAU Colloq. 198, p. 380Google Scholar