Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders

M. M. Boyce; A. M. Hopkins; S. Riggi; L. Rudnick; M. Ramsay; C. L. Hale; J. Marvil; M. Whiting; P. Venkataraman; C. P. O'Dea; S. A. Baum; Y. A. Gordon; A. N. Vantyghem; M. Dionyssiou; H. Andernach; J. D. Collier; J. English; B. S. Koribalski; D. Leahy; M. J. Michałowski; S. Safi-Harb; M. Vaccari; E. Alexander; M. Cowley; A. D. Kapinska; A. S. G. Robotham; H. Tang

doi:10.1017/pasa.2023.29

Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders

M. M. Boyce^*, A. M. Hopkins, S. Riggi, L. Rudnick, M. Ramsay, C. L. Hale, J. Marvil, M. Whiting, P. Venkataraman, C. P. O'Dea, S. A. Baum, Y. A. Gordon, A. N. Vantyghem, M. Dionyssiou, H. Andernach, J. D. Collier, J. English, B. S. Koribalski, D. Leahy, M. J. MichałowskiS. Safi-Harb, M. Vaccari, E. Alexander, M. Cowley, A. D. Kapinska, A. S. G. Robotham, H. Tang

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present a comparison between the performance of a selection of source finders using a new software tool called Hydra. The companion paper, Paper~I, introduced the Hydra tool and demonstrated its performance using simulated data. Here we apply Hydra to assess the performance of different source finders by analysing real observational data taken from the Evolutionary Map of the Universe (EMU) Pilot Survey. EMU is a wide-field radio continuum survey whose primary goal is to make a deep (20μJy/beam RMS noise), intermediate angular resolution (15′′), 1\,GHz survey of the entire sky south of +30∘ declination, and expecting to detect and catalogue up to 40 million sources. With the main EMU survey expected to begin in 2022 it is highly desirable to understand the performance of radio image source finder software and to identify an approach that optimises source detection capabilities. Hydra has been developed to refine this process, as well as to deliver a range of metrics and source finding data products from multiple source finders. We present the performance of the five source finders tested here in terms of their completeness and reliability statistics, their flux density and source size measurements, and an exploration of case studies to highlight finder-specific limitations.

Original language	English
Article number	e027
Pages (from-to)	1-25
Number of pages	25
Journal	Publications of the Astronomical Society of Australia
Volume	40
DOIs	https://doi.org/10.1017/pasa.2023.29
Publication status	Published - 13 Jun 2023

Keywords / Materials (for Non-textual outputs)

methods: data analysis
radio continuum: general
techniques: image processing

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10.1017/pasa.2023.29Licence: Creative Commons: Attribution (CC-BY)

https://arxiv.org/abs/2304.14357Licence: Creative Commons: Attribution-NonCommercial-ShareAlike (CC BY-NC-SA)

Studying The Influence Of Dark Matter Environments On Galaxy Evolution Over Time
Hale, C. (Principal Investigator)
1/11/20 → 31/10/23
Project: Research

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Boyce, M. M., Hopkins, A. M., Riggi, S., Rudnick, L., Ramsay, M., Hale, C. L., Marvil, J., Whiting, M., Venkataraman, P., O'Dea, C. P., Baum, S. A., Gordon, Y. A., Vantyghem, A. N., Dionyssiou, M., Andernach, H., Collier, J. D., English, J., Koribalski, B. S., Leahy, D., ... Tang, H. (2023). Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders. Publications of the Astronomical Society of Australia, 40, 1-25. Article e027. https://doi.org/10.1017/pasa.2023.29

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title = "Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders",

abstract = "We present a comparison between the performance of a selection of source finders using a new software tool called Hydra. The companion paper, Paper\textasciitilde{}I, introduced the Hydra tool and demonstrated its performance using simulated data. Here we apply Hydra to assess the performance of different source finders by analysing real observational data taken from the Evolutionary Map of the Universe (EMU) Pilot Survey. EMU is a wide-field radio continuum survey whose primary goal is to make a deep (20μJy/beam RMS noise), intermediate angular resolution (15′′), 1\textbackslash{},GHz survey of the entire sky south of +30∘ declination, and expecting to detect and catalogue up to 40 million sources. With the main EMU survey expected to begin in 2022 it is highly desirable to understand the performance of radio image source finder software and to identify an approach that optimises source detection capabilities. Hydra has been developed to refine this process, as well as to deliver a range of metrics and source finding data products from multiple source finders. We present the performance of the five source finders tested here in terms of their completeness and reliability statistics, their flux density and source size measurements, and an exploration of case studies to highlight finder-specific limitations. ",

keywords = "methods: data analysis, radio continuum: general, techniques: image processing",

author = "Boyce, \{M. M.\} and Hopkins, \{A. M.\} and S. Riggi and L. Rudnick and M. Ramsay and Hale, \{C. L.\} and J. Marvil and M. Whiting and P. Venkataraman and O'Dea, \{C. P.\} and Baum, \{S. A.\} and Gordon, \{Y. A.\} and Vantyghem, \{A. N.\} and M. Dionyssiou and H. Andernach and Collier, \{J. D.\} and J. English and Koribalski, \{B. S.\} and D. Leahy and Micha{\l}owski, \{M. J.\} and S. Safi-Harb and M. Vaccari and E. Alexander and M. Cowley and Kapinska, \{A. D.\} and Robotham, \{A. S. G.\} and H. Tang",

note = "Paper accepted for publication in PASA Publisher Copyright: {\textcopyright} The Author(s), 2023. Published by Cambridge University Press on behalf of the Astronomical Society of Australia.",

year = "2023",

month = jun,

day = "13",

doi = "10.1017/pasa.2023.29",

language = "English",

volume = "40",

pages = "1--25",

journal = "Publications of the Astronomical Society of Australia",

issn = "1323-3580",

publisher = "Cambridge University Press",

}

Boyce, MM, Hopkins, AM, Riggi, S, Rudnick, L, Ramsay, M, Hale, CL, Marvil, J, Whiting, M, Venkataraman, P, O'Dea, CP, Baum, SA, Gordon, YA, Vantyghem, AN, Dionyssiou, M, Andernach, H, Collier, JD, English, J, Koribalski, BS, Leahy, D, Michałowski, MJ, Safi-Harb, S, Vaccari, M, Alexander, E, Cowley, M, Kapinska, AD, Robotham, ASG & Tang, H 2023, 'Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders', Publications of the Astronomical Society of Australia, vol. 40, e027, pp. 1-25. https://doi.org/10.1017/pasa.2023.29

TY - JOUR

T1 - Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders

AU - Boyce, M. M.

AU - Hopkins, A. M.

AU - Riggi, S.

AU - Rudnick, L.

AU - Ramsay, M.

AU - Hale, C. L.

AU - Marvil, J.

AU - Whiting, M.

AU - Venkataraman, P.

AU - O'Dea, C. P.

AU - Baum, S. A.

AU - Gordon, Y. A.

AU - Vantyghem, A. N.

AU - Dionyssiou, M.

AU - Andernach, H.

AU - Collier, J. D.

AU - English, J.

AU - Koribalski, B. S.

AU - Leahy, D.

AU - Michałowski, M. J.

AU - Safi-Harb, S.

AU - Vaccari, M.

AU - Alexander, E.

AU - Cowley, M.

AU - Kapinska, A. D.

AU - Robotham, A. S. G.

AU - Tang, H.

PY - 2023/6/13

Y1 - 2023/6/13

N2 - We present a comparison between the performance of a selection of source finders using a new software tool called Hydra. The companion paper, Paper~I, introduced the Hydra tool and demonstrated its performance using simulated data. Here we apply Hydra to assess the performance of different source finders by analysing real observational data taken from the Evolutionary Map of the Universe (EMU) Pilot Survey. EMU is a wide-field radio continuum survey whose primary goal is to make a deep (20μJy/beam RMS noise), intermediate angular resolution (15′′), 1\,GHz survey of the entire sky south of +30∘ declination, and expecting to detect and catalogue up to 40 million sources. With the main EMU survey expected to begin in 2022 it is highly desirable to understand the performance of radio image source finder software and to identify an approach that optimises source detection capabilities. Hydra has been developed to refine this process, as well as to deliver a range of metrics and source finding data products from multiple source finders. We present the performance of the five source finders tested here in terms of their completeness and reliability statistics, their flux density and source size measurements, and an exploration of case studies to highlight finder-specific limitations.

AB - We present a comparison between the performance of a selection of source finders using a new software tool called Hydra. The companion paper, Paper~I, introduced the Hydra tool and demonstrated its performance using simulated data. Here we apply Hydra to assess the performance of different source finders by analysing real observational data taken from the Evolutionary Map of the Universe (EMU) Pilot Survey. EMU is a wide-field radio continuum survey whose primary goal is to make a deep (20μJy/beam RMS noise), intermediate angular resolution (15′′), 1\,GHz survey of the entire sky south of +30∘ declination, and expecting to detect and catalogue up to 40 million sources. With the main EMU survey expected to begin in 2022 it is highly desirable to understand the performance of radio image source finder software and to identify an approach that optimises source detection capabilities. Hydra has been developed to refine this process, as well as to deliver a range of metrics and source finding data products from multiple source finders. We present the performance of the five source finders tested here in terms of their completeness and reliability statistics, their flux density and source size measurements, and an exploration of case studies to highlight finder-specific limitations.

KW - methods: data analysis

KW - radio continuum: general

KW - techniques: image processing

U2 - 10.1017/pasa.2023.29

DO - 10.1017/pasa.2023.29

M3 - Article

SN - 1323-3580

VL - 40

SP - 1

EP - 25

JO - Publications of the Astronomical Society of Australia

JF - Publications of the Astronomical Society of Australia

M1 - e027

ER -

Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders

Abstract

Keywords / Materials (for Non-textual outputs)

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Studying The Influence Of Dark Matter Environments On Galaxy Evolution Over Time

Cite this