The SAMI Galaxy Survey: Cubism and covariance, putting round pegs into square holes
We present a methodology for the regularisation and combination of sparse sampled and irregularly gridded observations from fibre-optic multi-object integral-field spectroscopy. The approach minimises interpolation and retains image resolution on combining sub-pixel dithered data. We discuss the met...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Oxford University Press
2015
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Online Access: | http://hdl.handle.net/1959.3/389962 https://doi.org/10.1093/mnras/stu2055 |
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ftswinburneunicr:oai:researchbank.swinburne.edu.au:d06d4e62-7b81-4ffd-988d-357033e38f51/1 2023-05-15T18:10:43+02:00 The SAMI Galaxy Survey: Cubism and covariance, putting round pegs into square holes Sharp, R. Allen, J. T. Fogarty, L. M. R. Croom, S. M. Cortese, L. Green, A. W. Nielsen, J. Richards, S. N. Scott, N. Taylor, E. N. Barnes, L. A. Bauer, A. E. Birchall, M. Bland-Hawthorn, J. Bloom, J. V. Brough, S. Bryant, J. J. Cecil, G. N. Colless, M. Couch, W. J. Drinkwater, M. J. Driver, S. Foster, C. Goodwin, M. Gunawardhana, M. L. P. Ho, I. T. Hampton, E. J. Hopkins, A. M. Jones, H. Konstantopoulos, I. S. Lawrence, J. S. Leslie, S. K. Lewis, G. F. Liske, J. Lopez-Sanchez, A. R. Lorente, N. P. F. McElroy, R. Medling, A. M. Mahajan, S. Mould, J. Parker, Q. Pracy, M. B. Obreschkow, D. Owers, M. S. Schaefer, A. L. Sweet, S. M. Thomas, A. Tonini, C. Walcher, C. J. Swinburne University of Technology 2015 http://hdl.handle.net/1959.3/389962 https://doi.org/10.1093/mnras/stu2055 unknown Oxford University Press http://purl.org/au-research/grants/arc/FS110200023 http://purl.org/au-research/grants/arc/FS110200013 http://purl.org/au-research/grants/arc/FT100100457 http://purl.org/au-research/grants/arc/DP130100664 http://hdl.handle.net/1959.3/389962 https://doi.org/10.1093/mnras/stu2055 Copyright © 2014. This article has been accepted for publication in the Monthly Notices of the Royal Astronomical Society ©: 2014 The authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Monthly Notices of the Royal Astronomical Society, Vol. 446, no. 2 (Jan 2015), pp. 1551-1566 Journal article 2015 ftswinburneunicr https://doi.org/10.1093/mnras/stu2055 2022-09-11T16:51:16Z We present a methodology for the regularisation and combination of sparse sampled and irregularly gridded observations from fibre-optic multi-object integral-field spectroscopy. The approach minimises interpolation and retains image resolution on combining sub-pixel dithered data. We discuss the methodology in the context of the Sydney-AAO Multi-object Integral-field spectrograph (SAMI) Galaxy Survey underway at the Anglo-Australian Telescope. The SAMI instrument uses 13 fibre bundles to perform high-multiplex integral-field spectroscopy across a one degree diameter field of view. The SAMI Galaxy Survey is targeting 3000 galaxies drawn from the full range of galaxy environments. We demonstrate the subcritical sampling of the seeing and incomplete fill factor for the integral-field bundles results in only a 10% degradation in the final image resolution recovered. We also implement a new methodology for tracking covariance between elements of the resulting datacubes which retains 90% of the covariance information while incurring only a modest increase in the survey data volume. Article in Journal/Newspaper sami Swinburne Research Bank (Swinburne University of Technology) Monthly Notices of the Royal Astronomical Society 446 2 1551 1566 |
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Swinburne Research Bank (Swinburne University of Technology) |
op_collection_id |
ftswinburneunicr |
language |
unknown |
description |
We present a methodology for the regularisation and combination of sparse sampled and irregularly gridded observations from fibre-optic multi-object integral-field spectroscopy. The approach minimises interpolation and retains image resolution on combining sub-pixel dithered data. We discuss the methodology in the context of the Sydney-AAO Multi-object Integral-field spectrograph (SAMI) Galaxy Survey underway at the Anglo-Australian Telescope. The SAMI instrument uses 13 fibre bundles to perform high-multiplex integral-field spectroscopy across a one degree diameter field of view. The SAMI Galaxy Survey is targeting 3000 galaxies drawn from the full range of galaxy environments. We demonstrate the subcritical sampling of the seeing and incomplete fill factor for the integral-field bundles results in only a 10% degradation in the final image resolution recovered. We also implement a new methodology for tracking covariance between elements of the resulting datacubes which retains 90% of the covariance information while incurring only a modest increase in the survey data volume. |
author2 |
Swinburne University of Technology |
format |
Article in Journal/Newspaper |
author |
Sharp, R. Allen, J. T. Fogarty, L. M. R. Croom, S. M. Cortese, L. Green, A. W. Nielsen, J. Richards, S. N. Scott, N. Taylor, E. N. Barnes, L. A. Bauer, A. E. Birchall, M. Bland-Hawthorn, J. Bloom, J. V. Brough, S. Bryant, J. J. Cecil, G. N. Colless, M. Couch, W. J. Drinkwater, M. J. Driver, S. Foster, C. Goodwin, M. Gunawardhana, M. L. P. Ho, I. T. Hampton, E. J. Hopkins, A. M. Jones, H. Konstantopoulos, I. S. Lawrence, J. S. Leslie, S. K. Lewis, G. F. Liske, J. Lopez-Sanchez, A. R. Lorente, N. P. F. McElroy, R. Medling, A. M. Mahajan, S. Mould, J. Parker, Q. Pracy, M. B. Obreschkow, D. Owers, M. S. Schaefer, A. L. Sweet, S. M. Thomas, A. Tonini, C. Walcher, C. J. |
spellingShingle |
Sharp, R. Allen, J. T. Fogarty, L. M. R. Croom, S. M. Cortese, L. Green, A. W. Nielsen, J. Richards, S. N. Scott, N. Taylor, E. N. Barnes, L. A. Bauer, A. E. Birchall, M. Bland-Hawthorn, J. Bloom, J. V. Brough, S. Bryant, J. J. Cecil, G. N. Colless, M. Couch, W. J. Drinkwater, M. J. Driver, S. Foster, C. Goodwin, M. Gunawardhana, M. L. P. Ho, I. T. Hampton, E. J. Hopkins, A. M. Jones, H. Konstantopoulos, I. S. Lawrence, J. S. Leslie, S. K. Lewis, G. F. Liske, J. Lopez-Sanchez, A. R. Lorente, N. P. F. McElroy, R. Medling, A. M. Mahajan, S. Mould, J. Parker, Q. Pracy, M. B. Obreschkow, D. Owers, M. S. Schaefer, A. L. Sweet, S. M. Thomas, A. Tonini, C. Walcher, C. J. The SAMI Galaxy Survey: Cubism and covariance, putting round pegs into square holes |
author_facet |
Sharp, R. Allen, J. T. Fogarty, L. M. R. Croom, S. M. Cortese, L. Green, A. W. Nielsen, J. Richards, S. N. Scott, N. Taylor, E. N. Barnes, L. A. Bauer, A. E. Birchall, M. Bland-Hawthorn, J. Bloom, J. V. Brough, S. Bryant, J. J. Cecil, G. N. Colless, M. Couch, W. J. Drinkwater, M. J. Driver, S. Foster, C. Goodwin, M. Gunawardhana, M. L. P. Ho, I. T. Hampton, E. J. Hopkins, A. M. Jones, H. Konstantopoulos, I. S. Lawrence, J. S. Leslie, S. K. Lewis, G. F. Liske, J. Lopez-Sanchez, A. R. Lorente, N. P. F. McElroy, R. Medling, A. M. Mahajan, S. Mould, J. Parker, Q. Pracy, M. B. Obreschkow, D. Owers, M. S. Schaefer, A. L. Sweet, S. M. Thomas, A. Tonini, C. Walcher, C. J. |
author_sort |
Sharp, R. |
title |
The SAMI Galaxy Survey: Cubism and covariance, putting round pegs into square holes |
title_short |
The SAMI Galaxy Survey: Cubism and covariance, putting round pegs into square holes |
title_full |
The SAMI Galaxy Survey: Cubism and covariance, putting round pegs into square holes |
title_fullStr |
The SAMI Galaxy Survey: Cubism and covariance, putting round pegs into square holes |
title_full_unstemmed |
The SAMI Galaxy Survey: Cubism and covariance, putting round pegs into square holes |
title_sort |
sami galaxy survey: cubism and covariance, putting round pegs into square holes |
publisher |
Oxford University Press |
publishDate |
2015 |
url |
http://hdl.handle.net/1959.3/389962 https://doi.org/10.1093/mnras/stu2055 |
genre |
sami |
genre_facet |
sami |
op_source |
Monthly Notices of the Royal Astronomical Society, Vol. 446, no. 2 (Jan 2015), pp. 1551-1566 |
op_relation |
http://purl.org/au-research/grants/arc/FS110200023 http://purl.org/au-research/grants/arc/FS110200013 http://purl.org/au-research/grants/arc/FT100100457 http://purl.org/au-research/grants/arc/DP130100664 http://hdl.handle.net/1959.3/389962 https://doi.org/10.1093/mnras/stu2055 |
op_rights |
Copyright © 2014. This article has been accepted for publication in the Monthly Notices of the Royal Astronomical Society ©: 2014 The authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. |
op_doi |
https://doi.org/10.1093/mnras/stu2055 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
446 |
container_issue |
2 |
container_start_page |
1551 |
op_container_end_page |
1566 |
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1766183473367744512 |