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Probing the origin of thick disks using ultra-deep images

Published online by Cambridge University Press:  21 March 2017

Cristina Martínez-Lombilla ,
Ignacio Trujillo  and
Johan H. Knapen
Cristina Martínez-Lombilla
Affiliation:
Instituto de Astrofísica de Canarias (IAC), La Laguna, 38205, Spain Universidad de La Laguna (ULL), La Laguna, 38200, Spain
Ignacio Trujillo
Affiliation:
Instituto de Astrofísica de Canarias (IAC), La Laguna, 38205, Spain Universidad de La Laguna (ULL), La Laguna, 38200, Spain
Johan H. Knapen
Affiliation:
Instituto de Astrofísica de Canarias (IAC), La Laguna, 38205, Spain Universidad de La Laguna (ULL), La Laguna, 38200, Spain
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Abstract

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The origin of thick disks is still a matter of debate. To explore such structures in unprecedented detail, we have developed a technique to reach a surface brightness limit of 28.5-29 mag/arcsec2 with the combined g, r, i bands images from the IAC Stripe82 Legacy Project (Fliri & Trujillo, 2016). We present the characterisation of the thick disk in the edge-on galaxy UGC 01040. We carefully analyse the background subtraction and masking process. The effects of the PSF are considered through galaxy modelling. We present the study of radial and vertical surface brightness profiles, making a comparison between our data, the convolved and deconvolved models and its galactic components. We find that PSF effects are important, but can be accounted for. Our technique will allow us to model thick disks in external galaxies and elucidate their formation and evolutionary history.

Keywords

galaxies: evolutiongalaxies: formationgalaxies: spiralgalaxies: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 276
Copyright
Copyright © International Astronomical Union 2017 

References

Fliri, J. & Trujillo, I. 2016, MNRAS, 456, 1359 Google Scholar