J/A+A/712/A47ivo://CDS.VizieR/J/A+A/712/A47CDSLiu S.Yin X.Luo A.-L.Zhang W.Yan P.Bo Q.2026-08-05T08:41:49Z2026-08-05T09:28:51ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopychemical-abundancesvisible-astronomyGreen Pea and Blueberry galaxies are compact, low-metallicity starbursts that provide nearby analogs of high-redshift star-forming systems. We investigate whether their weak CO emission reflects genuinely small molecular reservoirs or CO-dark gas where independent tracers are available. We compiled 60 strong [OIII]{lambda}5007 compact emission-line galaxies with partially overlapping gas-tracer coverage: ^12^CO(1-0) observations from the Delingha 13.7m telescope, HI 21cm data from Arecibo, GBT, and FAST (ten detections and 41 upper limits), and Herschel/PACS [CII] {lambda}158um data (five detections and four upper limits after excluding merger systems). Quantitative conclusions are drawn only from detected or physically constraining subsets. Molecular masses were estimated using a metallicity-dependent CO-to-H_2_ conversion factor and the [CII]-to-H_2_ calibration for low-metallicity dwarf galaxies. Two CO upper limits are deep enough to constrain the expected molecular reservoir. We also removed major mergers and examined the large-scale environment using the SDSS DR7 VoidFinder catalog. For the five [CII]-detected sources, we find M_H2_^[CII]^~10^9^.0-10^9.7^M_{sun}_ and a median molecular gas depletion time of {tau}_dep,H2_~0.16Gyr, shorter than the ~1Gyr typical of main-sequence galaxies. HI-detected sources have a median atomic depletion time of {tau}_dep,H_~2.6Gyr. The detected subsets show high gas fractions and short depletion times consistent with rapid gas cycling, but the [CII] result remains limited by small-number statistics. About 39% of the volume-matched sample lies in cosmic voids. CO alone misses a substantial fraction of the star-forming fuel in these low-metallicity starbursts. Combined HI, [CII], and deep CO constraints are needed to characterize their interstellar medium and CO-dark molecular component.2026A&A...712A..47Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/712/A47CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/162 : LAMOST DR11 catalogs (Luo+, 2026)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/712/A47https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/712/A47http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/712/A47https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/712/A47https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/712/A47http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/712/A47GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/712/A47/lamost (LAMOST spectra manifest)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/712/A47/lamost?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/712/A47/lamost?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/712/A47/lamost?GETtext/xml+votable180.050000true131.8800138929.741311110.0055555555555555566/5017 5058 5932 8857 26992 27790 28270 28607https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/712/A47?format=asciiOpticaldefaultJ/A+A/712/A47/lamostLAMOST spectra manifestrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameShort source namemeta.idcharLAMOSTLAMOST designationmeta.id;meta.maincharspShow the spectrummeta.ref.urlcharFileNamespectrum FITS file name in subdirectory fitsmeta.id;meta.fitscharOBSIDLAMOST observation identifiermeta.id;obs.param;obsRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainzLAMOST spectroscopic redshiftsrc.redshiftdoubleMJDModified Julian datedtime.epochintSpIDLAMOST spectrograph identifiermeta.idintFiberLAMOST fiber identifiermeta.idintDateObsUTC start time of observationstime.start;obsnullableUsedyes if adopted for line measurementsmeta.codecharPurposeUse in the manuscriptmeta.codechar