The SAMI galaxy survey : spatially resolving the environmental quenching of star formation in GAMA galaxies.
- Schaefer, A. L.
- Croom, S. M.
- Allen, J. T.
- Brough, S.
- Medling, A. M.
- Ho, I.-T.
- Scott, N.
- Richards, S. N.
- Pracy, M. B.
- Gunawardhana, M. L. P.
- Norberg, P.
- Alpaslan, M.
- Bauer, A. E.
- Bekki, K.
- Bland-Hawthorn, J.
- Bloom, J. V.
- Bryant, J. J.
- Couch, W. J.
- Driver, S. P.
- Fogarty, L. M. R.
- Foster, C.
- Goldstein, G.
- Green, A. W.
- Hopkins, A. M.
- Konstantopoulos, I. S.
- Lawrence, J. S.
- López-Sánchez, A. R.
- Lorente, N. P. F.
- Owers, M. S.
- Sharp, R.
- Sweet, S. M.
- Taylor, E. N.
- van de Sande, J.
- Walcher, C. J.
- Wong, O. I.
DOIAbstract
We use data from the Sydney-AAO Multi-Object Integral Field Spectrograph (SAMI) Galaxy Survey and the Galaxy And Mass Assembly (GAMA) survey to investigate the spatially-resolved signatures of the environmental quenching of star formation in galaxies. Using dust-corrected measurements of the distribution of Hα emission we measure the radial profiles of star formation in a sample of 201 star-forming galaxies covering three orders of magnitude in stellar mass (M∗M∗; 108.1-1010.95 M⊙) and in 5th nearest neighbour local environment density (Σ5; 10−1.3- 102.1 Mpc−2). We show that star formation rate gradients in galaxies are steeper in dense (log10(Σ5/Mpc2) > 0.5) environments by 0.58 ± 0.29 dex re−1 in galaxies with stellar masses in the range ...
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