J/AJ/169/207ivo://CDS.VizieR/J/AJ/169/207doi:10.26093/cds/vizier/be-59-6fCDSDijeau A.F.Prescott M.K.M.Sanderson K.N.2026-07-02T11:45:34Z2026-01-12T15:55:46ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleigalaxiesphotometryvisible-astronomyExtended emission-line nebulae (EELN) around galaxies allow us to study their host galaxies and their surrounding environments. EELN can provide insights into the physical properties of the extended gas and, when powered by active galactic nuclei (AGN), they can constrain the ionization history of the central engine as well. Of interest is a sample of low-redshift EELN powered by AGN at z~0.3 that were discovered in the Sloan Digital Sky Survey (SDSS) through color selection. Colloquially called "Green Beans," due to strong, spatially extended [O_III_]{lambda}5007 emission dominating the r-band flux, they have been shown to be low-redshift counterparts to higher-redshift Ly{alpha} nebulae. However, only 17 Green Bean EELN are known to exist at z~0.3, and the original color selection was subsequently found to be biased in terms of host galaxy properties. In order to mitigate these biases and expand the known sample, we have developed a new, physically motivated selection approach, based on simulated EELN at z~0.3, with well-defined physical properties ([O_III_]{lambda}5007 rest-frame equivalent width and continuum spectral slope). With this improved selection approach, we have generated a new sample of 165 EELN candidates: the "Green Chile" catalog. Of the 13 candidates with existing SDSS/Baryon Oscillation Spectroscopic Survey spectra, we confirm that five are EELN with [O_III_]{lambda}5007 equivalent widths >200{AA} and emission-line ratios indicative of AGN powering.2025AJ....169..207Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/207CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)V/161 : DESI DR1 redshift catalog (DESI Col.+ 2025)VII/292 : DESI Legacy Imaging Surveys DR8 photometric redshifts (Duncan, 2022)J/MNRAS/421/1043 : Emission-line galaxies from SDSS DR7 (Shirazi+, 2012)J/MNRAS/436/718 : Extremely faint planetary nebulae in SDSS (Yuan+, 2013)J/MNRAS/465/1831 : SDSS-IV eBOSS ELG UgrizW photometry (Delubac+, 2017)J/ApJ/854/29 : High-EW [OIII] and H{alpha} emitters from 3D-HST (Maseda+, 2018)J/MNRAS/485/1085 : Classification of emission-line galaxies (Stampoulis+, 2019)J/MNRAS/507/4646 : SDSS DR16 white dwarf and subdwarf stars (Kepler+, 2021)J/MNRAS/526/4768 : Galaxy Zoo DESI (Walmsley+, 2023)J/ApJS/266/34 : Planetary nebulae with GALEX, SDSS, PS1 (Gomez-Munoz+, 2023)J/ApJS/267/16 : Strong [OIII]5007 emission-line compact galaxies (Liu+, 2023)J/ApJS/273/19 : Elemental abundances from DESI EDR spectra (Zhang+, 2024)J/ApJS/272/39 : Galaxy clusters from DESI Legacy Surveys & WISE (Wen+, 2024)J/MNRAS/542/3315 : Infrared and optical emission-line diagnostics (Durre, 2025)http://www.sdss.org/dr16/ : SDSS DR16 home pagehttp://skyserver.sdss.org/dr16/en/home.aspx : SDSS DR16 data accesshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/169/207https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/169/207http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/169/207https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/169/207https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/169/207http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/169/207GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/169/207/table5 (Clean Green Chile Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/169/207/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/169/207/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/169/207/table5?GETtext/xml+votable180.050000true247.94901-0.060540.005555555555555556Cone search capability for table J/AJ/169/207/table6 (Additional objects from the "Raw" Green Chile Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/169/207/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/169/207/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/169/207/table6?GETtext/xml+votable180.050000true243.86226-0.638040.0055555555555555566/33 735 904 934 2117-2118 2152 2196 2562 4114 4127 4279 4301 4459 4588 4683 4743 4822 4831 4841 4992 5177 5214 5373 5572 5607 5706 5738 5751 5767 5790 5982 6127 6135 6166 6172 6206 6384 6408 6442 6465 6502 6518 6627 6641 6931 7164 7181 7478 7486 7494 7645 7781 8229 8279 8288 8340 8371 8459 8512 8619 8626 8680 8753 8907 8925 9003 9140 9176 9199 9213 9225 9269 9312 9350 9363 9370 9392 9446 9476 9495 9558 9643 9918 9987 10002 10032 10084 10188 10242 10379 10400 10415 10430 10474 10506 10564 10596 10638 10723 10800 11003 11093-11094 11137 11292 11311 11318 11415 11420 11585 11781 11839 11864 11930 12298 12388 12400 12402 12440 12562 12610 12667 12683 12773 13361 13363 13380 13435 13444 13579 15020 17264 17278 17495 17770 17930 17952 18014 18045 18184 18192 18405 18537 18603 18845 18901 18932 18953 18989 19036 19125 19153 19181 19256 19265 19329 19375 19453 19610 19627 19789 19799 19809 19820 19831 19932 19965 20139 20166 20178 20281 20307 20328 20342 20369 20371 20428 21436 21855 21958 23060 24914 24938 25330 25512 25528 25595 25727 25947 26060 26086 26231 26368 26446 26449 26537 26926 26959 26997 27118 27359 27467 27628 27707 27724 27896 27962 28059 28062 28116 28130 28197 28228 28242 28349 28383 28491 30781 31146 31320 31385 31401 31503 31527 31695 31698 32431 32438 32446 32477 32493 32552 32679 32687 35823 44640 45000 45045 490032.381800341673347e-19 4.653515163505597e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/169/207?format=asciiOpticaldefaultJ/AJ/169/207/table5Clean Green Chile CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintobjIDSDSS DR16 (V/154) object identifiermeta.id;meta.mainRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.maingmag[17.89/20.97] SDSS DR16 AB g-band model magnitudemagphot.mag;em.opt.Bfloatrmag[17.01/19.91] SDSS DR16 AB r-band model magnitudemagphot.mag;em.opt.Rfloatimag[17.35/21.09] SDSS DR16 AB i-band model magnitudemagphot.mag;em.opt.IfloatSDSSDisplay the online SDSS-DR16 data for this objectmeta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/AJ/169/207/table6Additional objects from the "Raw" Green Chile CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintobjIDSDSS DR16 (V/154) object identifiermeta.id;meta.mainRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.maingmag[18.11/21.34] SDSS DR16 AB g-band model magnitudemagphot.mag;em.opt.Bfloatrmag[17.07/19.93] SDSS DR16 AB r-band model magnitudemagphot.mag;em.opt.Rfloatimag[17.4/20.61] SDSS DR16 AB i-band model magnitudemagphot.mag;em.opt.IfloatSDSSDisplay the online SDSS-DR16 data for this objectmeta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idcharnullable