Skip to main content Accessibility help
×
Home

Investigating the Merger Origin of Early-type Galaxies using Ultra-deep Optical Images

  • P.-A. Duc (a1), J.-C. Cuillandre (a2), K. Alatalo (a3), L. Blitz (a3), M. Bois (a4), F. Bournaud (a1), M. Bureau (a5), M. Cappellari (a5), P. Côté (a6), R. L. Davies (a5), T. A. Davis (a5), P. T. de Zeeuw (a7) (a8), E. Emsellem (a4) (a7), L. Ferrarese (a6), E. Ferriere (a1), S. Gwyn (a6), S. Khochfar (a9), D. Krajnovic (a7), H. Kuntschner (a7), P.-Y. Lablanche (a4), L. MacArthur (a6), R. M. McDermid (a10), L. Michel-Dansac (a4), R. Morganti (a11), T. Naab (a12), T. Oosterloo (a11), M. Sarzi (a13), N. Scott (a5), P. Serra (a11), A. Weijmans (a14) and L. M. Young (a15)...

Abstract

The mass assembly of galaxies leaves various imprints on their surroundings, such as shells, streams and tidal tails. The frequency and properties of these fine structures depend on the mechanism driving the mass assembly: e.g. a monolithic collapse, rapid cold-gas accretion followed by violent disk instabilities, minor mergers or major dry/wet mergers. Therefore, by studying the outskirts of galaxies, one can learn about their main formation mechanism. I present here our on-going work to characterize the outskirts of Early-Type Galaxies (ETGs), which are powerful probes at low redshift of the hierarchical mass assembly of galaxies. This work relies on ultra–deep optical images obtained at CFHT with the wide-field of view MegaCam camera of field and cluster ETGs obtained as part of the ATLAS3D and NGVS projects. State of the art numerical simulations are used to interpret the data. The images reveal a wealth of unknown faint structures at levels as faint as 29 mag arcsec−2 in the g-band. Initial results for two galaxies are presented here.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Investigating the Merger Origin of Early-type Galaxies using Ultra-deep Optical Images
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Investigating the Merger Origin of Early-type Galaxies using Ultra-deep Optical Images
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Investigating the Merger Origin of Early-type Galaxies using Ultra-deep Optical Images
      Available formats
      ×

Copyright

References

Hide All
Bournaud, F., Duc, P.-A., & Emsellem, E. 2008, MNRAS, 389, L8
Cappellari, M. et al. 2011, MNRAS, in press (arXiv:1012.1551)
Duc, P-A., et al. 2011, MNRAS, submitted
Elmegreen, B. G., & Bournaud, F. and Elmegreen, D. M. 2008, ApJ, 688, 67
Emsellem, E., et al. , 2011, MNRAS, submitted
Martig, M. et al. 2009, ApJ, 707, 250
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed