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Truncated star formation in dwarf spheroidal galaxies and photometric scaling relations

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Organization
Abstract
We investigate the global photometric scaling relations traced by early-type galaxies in different environments, ranging from dwarf spheroidals, over dwarf elliptical galaxies, up to giant, ellipticals (-8 mag greater than or similar to M-V greater than or similar to -24 mag). These results are based in part on our new HST/ACS F555W and F814W imagery of dwarf spheroidal galaxies in the Perseus Cluster. We show that at MV similar to -14 mag, the slopes of the photometric scaling relations involving the Sersic parameters change significantly. We argue that, these changes in slope reflect the different physical processes that dominate the evolution of early-type galaxies in different mass regimes. We present N-body/SPH simulations of the formation and evolution of dwarf spheroidals that reproduce these slope changes, and discuss the underlying physics. As such, these scaling relations contain a wealth of information that can be used to test models for the formation of early-type galaxies.
Keywords
galaxies: structure, galaxies: photometry, galaxies: dwarf

Citation

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Chicago
De Rijcke, Sven, Sander Valcke, Christopher Conselice, and Samantha Penny. 2008. “Truncated Star Formation in Dwarf Spheroidal Galaxies and Photometric Scaling Relations.” In Iau Symposium Proceedings Series, 255:318–322. Cambridge: Cambridge University Press.
APA
De Rijcke, S., Valcke, S., Conselice, C., & Penny, S. (2008). Truncated star formation in dwarf spheroidal galaxies and photometric scaling relations. IAU SYMPOSIUM PROCEEDINGS SERIES (Vol. 255, pp. 318–322). Presented at the 255th Symposium of the International Astronomical Union, Cambridge: Cambridge University Press.
Vancouver
1.
De Rijcke S, Valcke S, Conselice C, Penny S. Truncated star formation in dwarf spheroidal galaxies and photometric scaling relations. IAU SYMPOSIUM PROCEEDINGS SERIES. Cambridge: Cambridge University Press; 2008. p. 318–22.
MLA
De Rijcke, Sven et al. “Truncated Star Formation in Dwarf Spheroidal Galaxies and Photometric Scaling Relations.” Iau Symposium Proceedings Series. Vol. 255. Cambridge: Cambridge University Press, 2008. 318–322. Print.
@inproceedings{695143,
  abstract     = {We investigate the global photometric scaling relations traced by early-type galaxies in different environments, ranging from dwarf spheroidals, over dwarf elliptical galaxies, up to giant, ellipticals (-8 mag greater than or similar to M-V greater than or similar to -24 mag). These results are based in part on our new HST/ACS F555W and F814W imagery of dwarf spheroidal galaxies in the Perseus Cluster. We show that at MV similar to -14 mag, the slopes of the photometric scaling relations involving the Sersic parameters change significantly. We argue that, these changes in slope reflect the different physical processes that dominate the evolution of early-type galaxies in different mass regimes. We present N-body/SPH simulations of the formation and evolution of dwarf spheroidals that reproduce these slope changes, and discuss the underlying physics. As such, these scaling relations contain a wealth of information that can be used to test models for the formation of early-type galaxies.},
  author       = {De Rijcke, Sven and Valcke, Sander and Conselice, Christopher and Penny, Samantha},
  booktitle    = {IAU SYMPOSIUM PROCEEDINGS SERIES},
  issn         = {978-0-521-88986-5},
  keywords     = {galaxies: structure,galaxies: photometry,galaxies: dwarf},
  language     = {eng},
  location     = {Rapallo, Italy},
  pages        = {318--322},
  publisher    = {Cambridge University Press},
  title        = {Truncated star formation in dwarf spheroidal galaxies and photometric scaling relations},
  volume       = {255},
  year         = {2008},
}

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