J/A+A/694/A204ivo://CDS.VizieR/J/A+A/694/A204doi:10.26093/cds/vizier.36940204CDSCrossett J.P.Jaffe Y.L.McGee S.L.Smith R.Bellhouse C.Bettoni D.,Vulcani B.Kelkar K.Lourenco A.C.C.2026-03-03T20:01:11Z2025-02-14T10:13:41ZCDS support team

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

cds-question@unistra.frgalaxiesredshiftedvisible-astronomyRam pressure stripped galaxies are rare cases of environmental evolution in action. However, our ability to understand these transforming galaxies is limited by the small number of identified galaxies experiencing ram pressure stripping (RPS). Our aim is to explore the efficacy of citizen science classifications in identifying ram pressure stripped galaxies, and use this to aid in motivating new potential samples of ram pressure stripped candidates. We compiled a sample of over 200 known ram pressure stripped galaxies from the existing literature, with morphological classifications obtained from Galaxy Zoo. We compared these galaxies with magnitude and redshift-matched comparison cluster and field galaxies. Additionally, we created a sample of SDSS cluster galaxies, with morphological classifications similar to known ram pressure stripped galaxies, and compared the fraction of potential new RPS candidates against control samples. We find that ram pressure stripped galaxies exhibit a higher proportion of "odd" and "irregular" morphological classifications compared to field and cluster comparison samples. This trend is particularly pronounced in galaxies displaying strong optical ram pressure stripping features, but absent from galaxies with only radio tails. We find that SDSS galaxies with Galaxy Zoo classifications consistent with the known RPS galaxies have a higher fraction of visible ram pressure stripping features (19%) compared with other cluster galaxies (12%) when classified by experts. We identify 101 new ram pressure stripping candidate galaxies through these expert classifications. We demonstrate that indirect morphological classifications from citizen science projects can increase the efficiency with which new stripping candidates are found. Projects such as Galaxy Zoo can aid in the identification of ram pressure stripped galaxies that are key to understanding galaxy evolution in clusters.2025A&A...694A.204Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/694/A204CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/694/A204https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/694/A204http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/694/A204https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/694/A204https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/694/A204http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/694/A204GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/694/A204/tablea3 (SDSS galaxies with morphological features consistent with ram pressure stripping)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/694/A204/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/694/A204/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/694/A204/tablea3?GETtext/xml+votable180.050000true246.4981413.4656950.0055555555555555566/4163 4297 4447 4483 4551 4648 4650 4653 4886 4959 5374 5398 5535 5545 5689 5935 5982 5990 6010 6052 6119 6356 6439 6473 6992 8206 8208 8215 8223 8236 8261 8269 8302 8459 8468 8505 8514 8564 8725 8765 8884 8917 8923 8975 9051 9098 9178 9255 9282 9330 9365 9381 9742-9743 9776 10325 10378 10406 10827 10902 11023 11070 11181 21964 25962 26019 26329 26421 26469 26475 27218 27306 27321 27355 27578 27714 27825 27949 28348-28349 28381 28492 28518 28550 28584 31384 31401 31418-31419 31694-31695https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/694/A204?format=asciiOpticaldefaultJ/A+A/694/A204/tablea3SDSS galaxies with morphological features consistent with ram pressure strippingrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS Name, SDSS_JHHMMSS.ss+DDMMSS.s (1)meta.id;meta.maincharRAJ2000Galaxy right ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Galaxy declination (J2000) (1)degpos.eq.dec;meta.mainzGalaxy redshift (1)src.redshiftdoubleJclassAverage Jclass value for RPS strength (2)meta.codefloatSimbadNameSimbad column added by the CDSmeta.idcharnullable