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  • 1701 (1).07448v1

    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 A. M. Swinbank, C. M. Harrison, J. Trayford, M. Schaller, Ian Smail, J. Schaye, T. Theuns, R. Smit, D. M. Alexander, R. Bacon, R. G. Bower, T. Contini, R. A. Crain, C. de Breuck, R. Decarli, B. Epinat, M. Fumagalli, M. Furlong, A. Galametz, H. L. Johnson, C. Lagos, J. Richard, J. Vernet, R. M. Sharples, D. Sobral, J. P. Stott; Angular momentum evolution of galaxies over the past 10 Gyr: a MUSE and KMOS dynamical survey of 400 star-forming galaxies from z = 0.3 to 1.7. Mon Not R Astron Soc 2017; 467 (3): 3140-3159. doi: 10.1093/mnras/stx201 is available online at: https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx201

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Angular momentum evolution of galaxies over the past 10 Gyr: a MUSE and KMOS dynamical survey of 400 star-forming galaxies from z=0.3 to 1.7

Research output: Contribution to journalJournal article

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  • Mark Swinbank
  • Chris Harrison
  • James Trayford
  • Matthieu Schaller
  • Ian Smail
  • Joop Schaye
  • Tom Theuns
  • Renske Smit
  • David Alexander
  • Roland Bacon
  • Richard Bower
  • Thierry Contini
  • Rob Crain
  • Carlos de Breuck
  • Roberto Decarli
  • Benoit Epinat
  • Michele Fumagalli
  • Michelle Furlong
  • Audrey Galametz
  • Helen Johnson
  • Claudia Lagos
  • Johan Richard
  • Joel Vernet
  • Ray Sharples
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<mark>Journal publication date</mark>06/2017
<mark>Journal</mark>Monthly Notices of the Royal Astronomical Society
Issue number3
Volume467
Number of pages20
Pages (from-to)3140-3159
Publication statusPublished
Early online date25/01/17
Original languageEnglish

Abstract

We present a MUSE and KMOS dynamical study 405 star-forming galaxies at redshift z=0.28-1.65 (median redshift z=0.84). Our sample are representative of star-forming, main-sequence galaxies, with star-formation rates of SFR=0.1-30Mo/yr and stellar masses M=10^8-10^11Mo. For 49+/-4% of our sample, the dynamics suggest rotational support, 24+/-3% are unresolved systems and 5+/-2% appear to be early-stage major mergers with components on 8-30kpc scales. The remaining 22+/-5% appear to be dynamically complex, irregular (or face-on systems). For galaxies whose dynamics suggest rotational support, we derive inclination corrected rotational velocities and show these systems lie on a similar scaling between stellar mass and specific angular momentum as local spirals with j*=J/M*\propto M^(2/3) but with a redshift evolution that scales as j*\propto M^{2/3}(1+z)^(-1). We identify a correlation between specific angular momentum and disk stability such that galaxies with the highest specific angular momentum, log(j*/M^(2/3))>2.5, are the most stable, with Toomre Q=1.10+/-0.18, compared to Q=0.53+/-0.22 for galaxies with log(j*/M^(2/3))

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 A. M. Swinbank, C. M. Harrison, J. Trayford, M. Schaller, Ian Smail, J. Schaye, T. Theuns, R. Smit, D. M. Alexander, R. Bacon, R. G. Bower, T. Contini, R. A. Crain, C. de Breuck, R. Decarli, B. Epinat, M. Fumagalli, M. Furlong, A. Galametz, H. L. Johnson, C. Lagos, J. Richard, J. Vernet, R. M. Sharples, D. Sobral, J. P. Stott; Angular momentum evolution of galaxies over the past 10 Gyr: a MUSE and KMOS dynamical survey of 400 star-forming galaxies from z = 0.3 to 1.7. Mon Not R Astron Soc 2017; 467 (3): 3140-3159. doi: 10.1093/mnras/stx201 is available online at: https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx201 MNRAS in press. 21 pages; 12 figures. The full pdf, which includes an additional 32 pages of supplementary figures and data tables are available from http://astro.dur.ac.uk/~ams/MUSEcubes/