Home > Research > Publications & Outputs > The structural and size evolution of star-formi...

Associated organisational unit

Electronic data

  • 1611.05039v1

    Rights statement: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Ana Paulino-Afonso, David Sobral, Fernando Buitrago, José Afonso; The structural and size evolution of star-forming galaxies over the last 11 Gyr. Mon Not R Astron Soc 2017; 465 (3): 2717-2733. doi: 10.1093/mnras/stw2933 is available online at: https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stw2933

    Accepted author manuscript, 5.69 MB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

Links

Text available via DOI:

View graph of relations

The structural and size evolution of star-forming galaxies over the last 11 Gyrs

Research output: Contribution to journalJournal article

Published
Close
<mark>Journal publication date</mark>03/2017
<mark>Journal</mark>Monthly Notices of the Royal Astronomical Society
Issue number3
Volume465
Number of pages17
Pages (from-to)2717-2733
Publication statusPublished
Early online date14/11/16
Original languageEnglish

Abstract

We present new results on the evolution of rest-frame blue/UV sizes and Sersic indices of H$\alpha$-selected star-forming galaxies over the last 11 Gyrs. We investigate how the perceived evolution can be affected by a range of biases and systematics such as cosmological dimming and resolution effects. We use GALFIT and an artificial redshifting technique, which includes the luminosity evolution of H$\alpha$-selected galaxies, to quantify the change on the measured structural parameters with redshift. We find typical sizes of 2 to 3 kpc and Sersic indices of n~1.2, close to pure exponential disks all the way from z=2.23 to z=0.4. At z=0 we find typical sizes of 4-5 kpc. Our results show that, when using GALFIT, cosmological dimming has a negligible impact on the derived effective radius for galaxies with n

Bibliographic note

This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Ana Paulino-Afonso, David Sobral, Fernando Buitrago, José Afonso; The structural and size evolution of star-forming galaxies over the last 11 Gyr. Mon Not R Astron Soc 2017; 465 (3): 2717-2733. doi: 10.1093/mnras/stw2933 is available online at: https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stw2933