The SAMI galaxy survey:can we trust aperture corrections to predict star formation?
In the low-redshift Universe (z < 0.3), our view of galaxy evolution is primarily based on fibre optic spectroscopy surveys. Elaborate methods have been developed to address aperture effects when fixed aperture sizes only probe the inner regions for galaxies of ever decreasing redshift or increas...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
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2016
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Online Access: | https://researchers.mq.edu.au/en/publications/af5c4b7a-2279-4b60-8953-fe9762c67f2b https://doi.org/10.1093/mnras/stv2453 https://research-management.mq.edu.au/ws/files/110038035/6206214.pdf http://www.scopus.com/inward/record.url?scp=84959123320&partnerID=8YFLogxK http://www.scopus.com/inward/record.url?scp=84963820333&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE1101020 https://doi.org/10.1093/mnras/stw381 |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/af5c4b7a-2279-4b60-8953-fe9762c67f2b 2024-10-29T17:47:21+00:00 The SAMI galaxy survey:can we trust aperture corrections to predict star formation? Richards, S. N. Bryant, J. J. Croom, S. M. Hopkins, A. M. Schaefer, A. L. Bland-Hawthorn, J. Allen, J. T. Brough, S. Cecil, G. Cortese, L. Fogarty, L. M. R. Gunawardhana, M. L. P. Goodwin, M. Green, A. W. Ho, I. T. Kewley, L. J. Konstantopoulos, I. S. Lawrence, J. S. Lorente, N. P. F. Medling, A. M. Owers, M. S. Sharp, R. Sweet, S. M. Taylor, E. N. 2016-01-21 application/pdf https://researchers.mq.edu.au/en/publications/af5c4b7a-2279-4b60-8953-fe9762c67f2b https://doi.org/10.1093/mnras/stv2453 https://research-management.mq.edu.au/ws/files/110038035/6206214.pdf http://www.scopus.com/inward/record.url?scp=84959123320&partnerID=8YFLogxK http://www.scopus.com/inward/record.url?scp=84963820333&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE1101020 https://doi.org/10.1093/mnras/stw381 eng eng info:eu-repo/semantics/openAccess Richards , S N , Bryant , J J , Croom , S M , Hopkins , A M , Schaefer , A L , Bland-Hawthorn , J , Allen , J T , Brough , S , Cecil , G , Cortese , L , Fogarty , L M R , Gunawardhana , M L P , Goodwin , M , Green , A W , Ho , I T , Kewley , L J , Konstantopoulos , I S , Lawrence , J S , Lorente , N P F , Medling , A M , Owers , M S , Sharp , R , Sweet , S M & Taylor , E N 2016 , ' The SAMI galaxy survey : can we trust aperture corrections to predict star formation? ' , Monthly Notices of the Royal Astronomical Society , vol. 455 , no. 3 , pp. 2826-2838 . https://doi.org/10.1093/mnras/stv2453 techniques: spectroscopic galaxies: evolution article 2016 ftmacquarieunicr https://doi.org/10.1093/mnras/stv245310.1093/mnras/stw381 2024-10-03T00:23:11Z In the low-redshift Universe (z < 0.3), our view of galaxy evolution is primarily based on fibre optic spectroscopy surveys. Elaborate methods have been developed to address aperture effects when fixed aperture sizes only probe the inner regions for galaxies of ever decreasing redshift or increasing physical size. These aperture corrections rely on assumptions about the physical properties of galaxies. The adequacy of these aperture corrections can be tested with integralfield spectroscopic data. We use integral-field spectra drawn from 1212 galaxies observed as part of the SAMI Galaxy Survey to investigate the validity of two aperture correction methods that attempt to estimate a galaxy's total instantaneous star formation rate.We show that biases arise when assuming that instantaneous star formation is traced by broad-band imaging, and when the aperture correction is built only from spectra of the nuclear region of galaxies. These biases may be significant depending on the selection criteria of a survey sample. Understanding the sensitivities of these aperture corrections is essential for correct handling of systematic errors in galaxy evolution studies. Article in Journal/Newspaper sami Macquarie University Research Portal Monthly Notices of the Royal Astronomical Society 455 3 2826 2838 |
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Open Polar |
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Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
techniques: spectroscopic galaxies: evolution |
spellingShingle |
techniques: spectroscopic galaxies: evolution Richards, S. N. Bryant, J. J. Croom, S. M. Hopkins, A. M. Schaefer, A. L. Bland-Hawthorn, J. Allen, J. T. Brough, S. Cecil, G. Cortese, L. Fogarty, L. M. R. Gunawardhana, M. L. P. Goodwin, M. Green, A. W. Ho, I. T. Kewley, L. J. Konstantopoulos, I. S. Lawrence, J. S. Lorente, N. P. F. Medling, A. M. Owers, M. S. Sharp, R. Sweet, S. M. Taylor, E. N. The SAMI galaxy survey:can we trust aperture corrections to predict star formation? |
topic_facet |
techniques: spectroscopic galaxies: evolution |
description |
In the low-redshift Universe (z < 0.3), our view of galaxy evolution is primarily based on fibre optic spectroscopy surveys. Elaborate methods have been developed to address aperture effects when fixed aperture sizes only probe the inner regions for galaxies of ever decreasing redshift or increasing physical size. These aperture corrections rely on assumptions about the physical properties of galaxies. The adequacy of these aperture corrections can be tested with integralfield spectroscopic data. We use integral-field spectra drawn from 1212 galaxies observed as part of the SAMI Galaxy Survey to investigate the validity of two aperture correction methods that attempt to estimate a galaxy's total instantaneous star formation rate.We show that biases arise when assuming that instantaneous star formation is traced by broad-band imaging, and when the aperture correction is built only from spectra of the nuclear region of galaxies. These biases may be significant depending on the selection criteria of a survey sample. Understanding the sensitivities of these aperture corrections is essential for correct handling of systematic errors in galaxy evolution studies. |
format |
Article in Journal/Newspaper |
author |
Richards, S. N. Bryant, J. J. Croom, S. M. Hopkins, A. M. Schaefer, A. L. Bland-Hawthorn, J. Allen, J. T. Brough, S. Cecil, G. Cortese, L. Fogarty, L. M. R. Gunawardhana, M. L. P. Goodwin, M. Green, A. W. Ho, I. T. Kewley, L. J. Konstantopoulos, I. S. Lawrence, J. S. Lorente, N. P. F. Medling, A. M. Owers, M. S. Sharp, R. Sweet, S. M. Taylor, E. N. |
author_facet |
Richards, S. N. Bryant, J. J. Croom, S. M. Hopkins, A. M. Schaefer, A. L. Bland-Hawthorn, J. Allen, J. T. Brough, S. Cecil, G. Cortese, L. Fogarty, L. M. R. Gunawardhana, M. L. P. Goodwin, M. Green, A. W. Ho, I. T. Kewley, L. J. Konstantopoulos, I. S. Lawrence, J. S. Lorente, N. P. F. Medling, A. M. Owers, M. S. Sharp, R. Sweet, S. M. Taylor, E. N. |
author_sort |
Richards, S. N. |
title |
The SAMI galaxy survey:can we trust aperture corrections to predict star formation? |
title_short |
The SAMI galaxy survey:can we trust aperture corrections to predict star formation? |
title_full |
The SAMI galaxy survey:can we trust aperture corrections to predict star formation? |
title_fullStr |
The SAMI galaxy survey:can we trust aperture corrections to predict star formation? |
title_full_unstemmed |
The SAMI galaxy survey:can we trust aperture corrections to predict star formation? |
title_sort |
sami galaxy survey:can we trust aperture corrections to predict star formation? |
publishDate |
2016 |
url |
https://researchers.mq.edu.au/en/publications/af5c4b7a-2279-4b60-8953-fe9762c67f2b https://doi.org/10.1093/mnras/stv2453 https://research-management.mq.edu.au/ws/files/110038035/6206214.pdf http://www.scopus.com/inward/record.url?scp=84959123320&partnerID=8YFLogxK http://www.scopus.com/inward/record.url?scp=84963820333&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/CE1101020 https://doi.org/10.1093/mnras/stw381 |
genre |
sami |
genre_facet |
sami |
op_source |
Richards , S N , Bryant , J J , Croom , S M , Hopkins , A M , Schaefer , A L , Bland-Hawthorn , J , Allen , J T , Brough , S , Cecil , G , Cortese , L , Fogarty , L M R , Gunawardhana , M L P , Goodwin , M , Green , A W , Ho , I T , Kewley , L J , Konstantopoulos , I S , Lawrence , J S , Lorente , N P F , Medling , A M , Owers , M S , Sharp , R , Sweet , S M & Taylor , E N 2016 , ' The SAMI galaxy survey : can we trust aperture corrections to predict star formation? ' , Monthly Notices of the Royal Astronomical Society , vol. 455 , no. 3 , pp. 2826-2838 . https://doi.org/10.1093/mnras/stv2453 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/mnras/stv245310.1093/mnras/stw381 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
455 |
container_issue |
3 |
container_start_page |
2826 |
op_container_end_page |
2838 |
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1814276913366040576 |