The SAMI Galaxy Survey: the low-redshift stellar mass Tully-Fisher relation
Article
Bloom, J. V., Croom, S. M., Bryant, J. J., Callingham, J. R., Schaefer, A. L., Cortese, L., Hopkins, A. M., D'Eugenio, F., Scott, N., Glazebrook, K., Tonini, C., McElroy, R. E., Clark, H.A., Catinella, B., Allen, J.T., Bland-Hawthorn, J., Goodwin, M., Green, A.W., Konstantopoulos, I.S., ..., Sharp, R.. 2017. "The SAMI Galaxy Survey: the low-redshift stellar mass Tully-Fisher relation." Monthly Notices of the Royal Astronomical Society. 472 (2), pp. 1809-1824. https://doi.org/10.1093/mnras/stx1701
Article Title | The SAMI Galaxy Survey: the low-redshift stellar mass Tully-Fisher relation |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Bloom, J. V., Croom, S. M., Bryant, J. J., Callingham, J. R., Schaefer, A. L., Cortese, L., Hopkins, A. M., D'Eugenio, F., Scott, N., Glazebrook, K., Tonini, C., McElroy, R. E., Clark, H.A., Catinella, B., Allen, J.T., Bland-Hawthorn, J., Goodwin, M., Green, A.W., Konstantopoulos, I.S., Lawrence, J., Lorente, N., Medling, A. M., Owers, M., Richards, S.N. and Sharp, R. |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 472 (2), pp. 1809-1824 |
Number of Pages | 16 |
Year | 2017 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stx1701 |
Web Address (URL) | https://academic.oup.com/mnras/article/472/2/1809/3979463 |
Abstract | We investigate the Tully-Fisher relation (TFR) for a morphologically and kinematically diverse sample of galaxies from the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey using two-dimensional spatially resolved H α velocity maps and find a well-defined relation across the stellar mass range of 8.0 < log (M<SUB>*</SUB>/M<SUB>⊙</SUB>) < 11.5. We use an adaptation of kinemetry to parametrize the kinematic H α asymmetry of all galaxies in the sample, and find a correlation between scatter (i.e. residuals off the TFR) and asymmetry. This effect is pronounced at low stellar mass, corresponding to the inverse relationship between stellar mass and kinematic asymmetry found in previous work. For galaxies with log (M<SUB>*</SUB>/M<SUB>⊙</SUB>) < 9.5, 25 ± 3 per cent are scattered below the root mean square (RMS) of the TFR, whereas for galaxies with log (M<SUB>*</SUB>/M<SUB>⊙</SUB>) > 9.5 the fraction is 10 ± 1 per cent. We use 'simulated slits' to directly compare our results with those from long slit spectroscopy and find that aligning slits with the photometric, rather than the kinematic, position angle, increases global scatter below the TFR. Further, kinematic asymmetry is correlated with misalignment between the photometric and kinematic position angles. This work demonstrates the value of 2D spatially resolved kinematics for accurate TFR studies; integral field spectroscopy reduces the underestimation of rotation velocity that can occur from slit positioning off the kinematic axis. |
Keywords | techniques: imaging spectroscopy; galaxies: evolution; galaxies: |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510102. Astronomical instrumentation |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions, but may be accessed online. Please see the link in the URL field. |
Byline Affiliations | University of Sydney |
ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions, Australia | |
Australian Astronomical Observatory, Australia | |
Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia | |
University of Western Australia | |
Australian National University | |
Swinburne University of Technology | |
Atlassian, Australia | |
California Institute of Technology (Caltech), United States | |
Macquarie University |
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