SAMI Galaxy Survey asymmetries Virtual Observatory Resource

Authors
  1. Bloom J.V.
  2. Fogarty L.M.R.
  3. Croom S.M.
  4. Schaefer A.
  5. Bryant J.J.,Cortese L.
  6. Richards S.
  7. Bland-Hawthorn J.
  8. Ho I.-T.
  9. Scott N.,Goldstein G.
  10. Medling A.
  11. Brough S.
  12. Sweet S.M.
  13. Cecil G.,Lopez-Sanchez A.
  14. Glazebrook K.
  15. Parker Q.
  16. Allen J.T.
  17. Goodwin M.,Green A.W.
  18. Konstantopoulos I.S.
  19. Lawrence J.S.
  20. Lorente N.
  21. Owers M.S.,Sharp R.
  22. Published by
    CDS
Abstract

We study the properties of kinematically disturbed galaxies in the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey using a quantitative criterion, based on kinemetry (Krajnovic et al., 2011MNRAS.414.2923K). The approach, similar to the application of kinemetry by Shapiro et al., uses ionized gas kinematics, probed by H{alpha} emission. By this method, 23+/-7 per cent of our 360-galaxy sub-sample of the SAMI Galaxy Survey are kinematically asymmetric. Visual classifications agree with our kinemetric results for 90 per cent of asymmetric and 95 per cent of normal galaxies. We find that stellar mass and kinematic asymmetry are inversely correlated and that kinematic asymmetry is both more frequent and stronger in low-mass galaxies. This builds on previous studies that found high fractions of kinematic asymmetry in low-mass galaxies using a variety of different methods. Concentration of star formation and kinematic disturbance are found to be correlated, confirming results found in previous work. This effect is stronger for high-mass galaxies (log(M*)>10) and indicates that kinematic disturbance is linked to centrally concentrated star formation. Comparison of the inner (within 0.5Re) and outer H{alpha} equivalent widths of asymmetric and normal galaxies shows a small but significant increase in inner equivalent width for asymmetric galaxies.

Keywords
  1. surveys
  2. galaxies
  3. catalogs
  4. galaxy-classification-systems
Bibliographic source Bibcode
2017MNRAS.465..123B
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/465/123
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/465/123

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/465/123
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/465/123
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/465/123
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/465/123/tablea1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/465/123/tablea1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/465/123/tablea1?

History

2018-09-07T10:08:52Z
Resource record created
2018-09-07T10:08:52Z
Created
2018-10-22T12:59:40Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr