J/MNRAS/533/4334ivo://CDS.VizieR/J/MNRAS/533/4334doi:10.26093/cds/vizier.75334334CDSTuntipong S.van de Sande J.Croom S.M.Barsanti S.Bland-Hawthorn J.,Brough S.Bryant J.J.Casura S.Fraser-McKelvie A.Lawrence J.S.,Ristea A.Sweet S.M.Zafar T.2025-08-04T20:16:36Z2024-10-15T12:10:36ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysgalaxiescatalogsgalaxy-classification-systemsvisible-astronomyMilky 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 formation rate (SFR), bulge-to-total ratio (B/T), and disc effective radius (Re). Based on 15 different selection combinations, we find that including M* 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 Re 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.2024MNRAS.533.4334Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/533/4334CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/446/1567 : SAMI Galaxy Survey: EDR (Allen+, 2015)http://sami-survey.org/ : SAMI Galaxy Survey Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/533/4334https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/533/4334http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/533/4334https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/533/4334https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/533/4334http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/533/4334GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/533/4334/samicat (SAMI detailed classifications)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/533/4334/samicat?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/533/4334/samicat?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/533/4334/samicat?GETtext/xml+votable180.050000true174.153153280.81543855333330.0055555555555555564/1622 1642 5/1024 1026 4135 4504 5462-5463 5468-5469 6399 6479 6483-6484 6487 6501 6512 6563 6572 6740-6742 6748 6825-6827 6830 6912 6/4101-4102 4108 4112 4128 16451 16454 16538-16539 16560-16561 16564-16565 17236-17237 17239 17920 17922 18009 18011 18014 18604-18605 18607 18616 18618 21837 21839 21843 21845-21847 21861 25589-25591 25593 25595 25915 25930-25931 25940 25942-25943 25945-25947 25968-25970 25972 25976 26001 26003 26013 26052 26054 26056-26057 26251 26296 26949-26951 26956-26957 26959 26972-26974 26996 27278-27279 27290 27297-27299 27312 27314-27315 27318 27324 27652-27654 27656 27658 40957 40959 45050-45051 46910-46911 46996-46997https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/533/4334?format=asciiOpticaldefaultJ/MNRAS/533/4334/samicatSAMI detailed classificationsfmerger[0/1] Fraction of respondents that classified this galaxy as having a merger (two systems that are very close to one another such that they are basically one system now) (merger_fract)meta.codefloatfinter[0/1] Fraction of respondents that classified this galaxy as undergoing an interaction including tidal tails (galaxy shows signs of disturbance but is still considered a separate galaxy) (interaction_fract)meta.codefloatfshells-or-asym[0/1] Fraction of respondents that classified this galaxy as having shells or asymmetry (incl merger remnants) (shells_or_asymmetry_fract)meta.codefloatfany-inter[0/1] Fraction of respondents that classified this galaxy as having any evidence for an interaction (incl merger, tidal tails, asymmetry, or shells). (= merger_fract + interaction_fract + shells_or_asymmetry_fract, Max=1]) (meta.codefloatComAny comments left by classifiers (comments)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSAMISAMI CATID (CATID_EXT)meta.id;meta.mainRAJ2000Right Ascension (J2000) of object (RA_OBJ)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) of object (DEC_OBJ)degpos.eq.dec;meta.mainzspSpectroscopic redshift (z_spec)src.redshiftdoublefstrong-bar[0/1] Fraction of respondents that classified this galaxy as having a strong bar (strong_bar_fract)meta.codefloatfweak-bar[0/1] Fraction of respondents that classified this galaxy as having a weak bar (weak_bar_fract)meta.codefloatftot-bar[0/1] Fraction of respondents that classified this galaxy as having any type of bar (= strong_bar_fract + weak_bar_fract) (tot_bar_fract)meta.codefloatfBP-bulge[0/1] Fraction of respondents that classified this galaxy as having a boxy-peanut bulge (BP_bulge_fract)meta.codefloatfLSB-comp[0/1] Fraction of respondents that classified this galaxy as having a low surface- brightness companion (LSB_companion_fract)meta.codefloat