The SAMI galaxy survey: on the importance of applying multiple selection criteria for finding Milky Way analogues
ABSTRACT Milky Way analogues (MWAs) provide an alternative insight into the various pathways that lead to the formation of disc galaxies with similar properties to the Milky Way (MW). In this study, we explore different selection techniques for identifying MWAs in the Sydney-AAO (Australian Astronom...
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Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2024-10, Vol.533 (4), p.4334-4359 |
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creator | Tuntipong, Sujeeporn van de Sande, Jesse Croom, Scott M Barsanti, Stefania Bland-Hawthorn, Joss Brough, Sarah Bryant, Julia J Casura, Sarah Fraser-McKelvie, Amelia Lawrence, Jon S Ristea, Andrei Sweet, Sarah M Zafar, Tayyaba |
description | ABSTRACT
Milky Way analogues (MWAs) provide an alternative insight into the various pathways that lead to the formation of disc galaxies with similar properties to the Milky Way (MW). In this study, we explore different selection techniques for identifying MWAs in the Sydney-AAO (Australian Astronomical Observatory) Multi-object Integral field spectrograph (SAMI) Galaxy Survey. We utilize a nearest neighbours method to define MWAs using four selection parameters including stellar mass ($M_{\star }$), star formation rate ($\rm SFR$), bulge-to-total ratio ($B/T$), and disc effective radius ($R_{\rm {e}}$). Based on 15 different selection combinations, we find that including $M_{\star }$ and SFR is essential for minimizing biases in the average MWA properties as compared to the MW. Furthermore, given the MW’s smaller than average size, selection combinations without $R_{\rm {e}}$ result in MWAs being too large. Lastly, we find that $B/T$ is the least important parameter out of the four tested parameters. Using all four selection criteria, we define the top 10 most MW-like galaxies in the GAMA and Cluster regions of the SAMI survey. These most MW-like galaxies are typically barred spirals, with kinematically cold rotating discs and reside in a wide range of environments. Surprisingly, we find no significant differences between the MWAs selected from the GAMA and Cluster regions. Our work highlights the importance of using multiple selection criteria for finding MWAs and also demonstrates potential biases in previous MWA studies. |
doi_str_mv | 10.1093/mnras/stae2042 |
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Milky Way analogues (MWAs) provide an alternative insight into the various pathways that lead to the formation of disc galaxies with similar properties to the Milky Way (MW). In this study, we explore different selection techniques for identifying MWAs in the Sydney-AAO (Australian Astronomical Observatory) Multi-object Integral field spectrograph (SAMI) Galaxy Survey. We utilize a nearest neighbours method to define MWAs using four selection parameters including stellar mass ($M_{\star }$), star formation rate ($\rm SFR$), bulge-to-total ratio ($B/T$), and disc effective radius ($R_{\rm {e}}$). Based on 15 different selection combinations, we find that including $M_{\star }$ and SFR is essential for minimizing biases in the average MWA properties as compared to the MW. Furthermore, given the MW’s smaller than average size, selection combinations without $R_{\rm {e}}$ result in MWAs being too large. Lastly, we find that $B/T$ is the least important parameter out of the four tested parameters. Using all four selection criteria, we define the top 10 most MW-like galaxies in the GAMA and Cluster regions of the SAMI survey. These most MW-like galaxies are typically barred spirals, with kinematically cold rotating discs and reside in a wide range of environments. Surprisingly, we find no significant differences between the MWAs selected from the GAMA and Cluster regions. Our work highlights the importance of using multiple selection criteria for finding MWAs and also demonstrates potential biases in previous MWA studies.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1093/mnras/stae2042</identifier><language>eng</language><publisher>London: Oxford University Press</publisher><subject>Bias ; Celestial bodies ; Criteria ; Disk galaxies ; Galactic clusters ; Galactic rotation ; Parameter identification ; Rotating disks ; Star & galaxy formation ; Star formation rate ; Stars & galaxies ; Stellar mass</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2024-10, Vol.533 (4), p.4334-4359</ispartof><rights>2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. 2024</rights><rights>2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c226t-32f564668a4871e04d29e3fb8c0ec41734ce749b2c05c8bc80ffe662d6c1dce43</cites><orcidid>0000-0002-6998-6993 ; 0000-0001-7516-4016 ; 0000-0003-1627-9301 ; 0000-0003-3935-7018 ; 0009-0002-8534-5077 ; 0000-0002-9332-5386 ; 0000-0001-9557-5648 ; 0000-0003-2723-0810 ; 0000-0003-2880-9197 ; 0000-0002-9796-1363 ; 0000-0003-2552-0021 ; 0000-0002-1576-2505 ; 0000-0003-1645-0543</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,860,1598,27901,27902</link.rule.ids></links><search><creatorcontrib>Tuntipong, Sujeeporn</creatorcontrib><creatorcontrib>van de Sande, Jesse</creatorcontrib><creatorcontrib>Croom, Scott M</creatorcontrib><creatorcontrib>Barsanti, Stefania</creatorcontrib><creatorcontrib>Bland-Hawthorn, Joss</creatorcontrib><creatorcontrib>Brough, Sarah</creatorcontrib><creatorcontrib>Bryant, Julia J</creatorcontrib><creatorcontrib>Casura, Sarah</creatorcontrib><creatorcontrib>Fraser-McKelvie, Amelia</creatorcontrib><creatorcontrib>Lawrence, Jon S</creatorcontrib><creatorcontrib>Ristea, Andrei</creatorcontrib><creatorcontrib>Sweet, Sarah M</creatorcontrib><creatorcontrib>Zafar, Tayyaba</creatorcontrib><title>The SAMI galaxy survey: on the importance of applying multiple selection criteria for finding Milky Way analogues</title><title>Monthly notices of the Royal Astronomical Society</title><description>ABSTRACT
Milky Way analogues (MWAs) provide an alternative insight into the various pathways that lead to the formation of disc galaxies with similar properties to the Milky Way (MW). In this study, we explore different selection techniques for identifying MWAs in the Sydney-AAO (Australian Astronomical Observatory) Multi-object Integral field spectrograph (SAMI) Galaxy Survey. We utilize a nearest neighbours method to define MWAs using four selection parameters including stellar mass ($M_{\star }$), star formation rate ($\rm SFR$), bulge-to-total ratio ($B/T$), and disc effective radius ($R_{\rm {e}}$). Based on 15 different selection combinations, we find that including $M_{\star }$ and SFR is essential for minimizing biases in the average MWA properties as compared to the MW. Furthermore, given the MW’s smaller than average size, selection combinations without $R_{\rm {e}}$ result in MWAs being too large. Lastly, we find that $B/T$ is the least important parameter out of the four tested parameters. Using all four selection criteria, we define the top 10 most MW-like galaxies in the GAMA and Cluster regions of the SAMI survey. These most MW-like galaxies are typically barred spirals, with kinematically cold rotating discs and reside in a wide range of environments. Surprisingly, we find no significant differences between the MWAs selected from the GAMA and Cluster regions. 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van de Sande, Jesse ; Croom, Scott M ; Barsanti, Stefania ; Bland-Hawthorn, Joss ; Brough, Sarah ; Bryant, Julia J ; Casura, Sarah ; Fraser-McKelvie, Amelia ; Lawrence, Jon S ; Ristea, Andrei ; Sweet, Sarah M ; Zafar, Tayyaba</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c226t-32f564668a4871e04d29e3fb8c0ec41734ce749b2c05c8bc80ffe662d6c1dce43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Bias</topic><topic>Celestial bodies</topic><topic>Criteria</topic><topic>Disk galaxies</topic><topic>Galactic clusters</topic><topic>Galactic rotation</topic><topic>Parameter identification</topic><topic>Rotating disks</topic><topic>Star & galaxy formation</topic><topic>Star formation rate</topic><topic>Stars & galaxies</topic><topic>Stellar mass</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tuntipong, Sujeeporn</creatorcontrib><creatorcontrib>van de Sande, Jesse</creatorcontrib><creatorcontrib>Croom, Scott M</creatorcontrib><creatorcontrib>Barsanti, Stefania</creatorcontrib><creatorcontrib>Bland-Hawthorn, Joss</creatorcontrib><creatorcontrib>Brough, Sarah</creatorcontrib><creatorcontrib>Bryant, Julia J</creatorcontrib><creatorcontrib>Casura, Sarah</creatorcontrib><creatorcontrib>Fraser-McKelvie, Amelia</creatorcontrib><creatorcontrib>Lawrence, Jon S</creatorcontrib><creatorcontrib>Ristea, Andrei</creatorcontrib><creatorcontrib>Sweet, Sarah M</creatorcontrib><creatorcontrib>Zafar, Tayyaba</creatorcontrib><collection>Oxford Journals Open Access Collection</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Monthly notices of the Royal Astronomical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tuntipong, Sujeeporn</au><au>van de Sande, Jesse</au><au>Croom, Scott M</au><au>Barsanti, Stefania</au><au>Bland-Hawthorn, Joss</au><au>Brough, Sarah</au><au>Bryant, Julia J</au><au>Casura, Sarah</au><au>Fraser-McKelvie, Amelia</au><au>Lawrence, Jon S</au><au>Ristea, Andrei</au><au>Sweet, Sarah M</au><au>Zafar, Tayyaba</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The SAMI galaxy survey: on the importance of applying multiple selection criteria for finding Milky Way analogues</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><date>2024-10-01</date><risdate>2024</risdate><volume>533</volume><issue>4</issue><spage>4334</spage><epage>4359</epage><pages>4334-4359</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><abstract>ABSTRACT
Milky Way analogues (MWAs) provide an alternative insight into the various pathways that lead to the formation of disc galaxies with similar properties to the Milky Way (MW). In this study, we explore different selection techniques for identifying MWAs in the Sydney-AAO (Australian Astronomical Observatory) Multi-object Integral field spectrograph (SAMI) Galaxy Survey. We utilize a nearest neighbours method to define MWAs using four selection parameters including stellar mass ($M_{\star }$), star formation rate ($\rm SFR$), bulge-to-total ratio ($B/T$), and disc effective radius ($R_{\rm {e}}$). Based on 15 different selection combinations, we find that including $M_{\star }$ and SFR is essential for minimizing biases in the average MWA properties as compared to the MW. Furthermore, given the MW’s smaller than average size, selection combinations without $R_{\rm {e}}$ result in MWAs being too large. Lastly, we find that $B/T$ is the least important parameter out of the four tested parameters. Using all four selection criteria, we define the top 10 most MW-like galaxies in the GAMA and Cluster regions of the SAMI survey. These most MW-like galaxies are typically barred spirals, with kinematically cold rotating discs and reside in a wide range of environments. Surprisingly, we find no significant differences between the MWAs selected from the GAMA and Cluster regions. Our work highlights the importance of using multiple selection criteria for finding MWAs and also demonstrates potential biases in previous MWA studies.</abstract><cop>London</cop><pub>Oxford University Press</pub><doi>10.1093/mnras/stae2042</doi><tpages>26</tpages><orcidid>https://orcid.org/0000-0002-6998-6993</orcidid><orcidid>https://orcid.org/0000-0001-7516-4016</orcidid><orcidid>https://orcid.org/0000-0003-1627-9301</orcidid><orcidid>https://orcid.org/0000-0003-3935-7018</orcidid><orcidid>https://orcid.org/0009-0002-8534-5077</orcidid><orcidid>https://orcid.org/0000-0002-9332-5386</orcidid><orcidid>https://orcid.org/0000-0001-9557-5648</orcidid><orcidid>https://orcid.org/0000-0003-2723-0810</orcidid><orcidid>https://orcid.org/0000-0003-2880-9197</orcidid><orcidid>https://orcid.org/0000-0002-9796-1363</orcidid><orcidid>https://orcid.org/0000-0003-2552-0021</orcidid><orcidid>https://orcid.org/0000-0002-1576-2505</orcidid><orcidid>https://orcid.org/0000-0003-1645-0543</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Bias Celestial bodies Criteria Disk galaxies Galactic clusters Galactic rotation Parameter identification Rotating disks Star & galaxy formation Star formation rate Stars & galaxies Stellar mass |
title | The SAMI galaxy survey: on the importance of applying multiple selection criteria for finding Milky Way analogues |
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