Attributes of DESI DR9 spiral galaxies J/A+A/694/A271 ivo://CDS.VizieR/J/A+A/694/A271 doi:10.26093/cds/vizier.36940271 CDS Cai J.-H. Li N. Yang H.-F. Wang L.-L. Zheng A.-Y. Hao J. Zhao X.,Xun Y. 2025-05-21T20:01:58Z 2025-02-19T08:15:33Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr galaxies catalogs photometry chemical-abundances The gas-phase metallicity is a crucial parameter for understanding the evolution of galaxies. Considering that the number of multi-band galaxy images can typically reach tens of millions, using these images as input data for predicting gas-phase metallicity has become a feasible method. However, the accuracy of metallicity estimates from images is relatively limited. To solve this problem, we propose Galaxy Parameter Measurement Residual Network (GPM-ResNet), a deep learning method designed to predict gas-phase metallicity from photometric images of DESI. The parameter of photometric images are labeled with gas-phase metallicity values, which are obtained through spectroscopic methods with high accuracy. These labeled images serve as the training dataset for the GPM-ResNet method. GPM-ResNet mainly consists of two modules: a multi-order feature extractor and a parameter generator, enhancing the ability to effectively extract features related to gas-phase metallicity from photometric images. The {sigma} of Zpred-Ztrue is 0.12dex, which significantly outperforms the predicted results of the second-order polynomial ({sigma}=0.16dex) and the third-order polynomial ({sigma}=0.16dex) fitted using the color-metallicity relation on the same dataset. To further emphasize the superiority of GPM-ResNet, we analyze the predicted results on various network architectures, galaxy sizes, image resolutions, and wavelength bands of images. Moreover, we explore the Mass-Metallicity relation and recover the relation successfully by utilizing the predicted values Zpred. Finally, we apply GPM-ResNet to predict the gas-phase metallicity of spiral (EXP) galaxies observed by DESI, resulting in a comprehensive catalog containing 5095815 data. 2025A&A...694A.271C https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/694/A271 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to VII/292 : DESI Legacy Imaging Surveys DR8 photometric redshifts (Duncan, 2022) https://www.legacysurvey.org/dr9/description : DESI DR9 Home Page https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/694/A271 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/694/A271 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/694/A271 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/694/A271 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/694/A271 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/694/A271 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/694/A271/table2 (Catalog of spiral galaxies (EXP) in DESI DR9) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/694/A271/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/694/A271/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/694/A271/table2? 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45461-45463 45466-45467 45477 45479 45481-45483 45654-45655 45657-45659 45671 45677 45688-45689 45691 45777 45787 45809 45811 46452-46454 46456-46458 46516 46520 46532-46533 46536-46538 46716 46772 46776-46777 46788-46790 46792 46794 46800 46852-46854 46880 47188-47189 47191 47197 47384-47385 47387 47393 47412-47413 47415 47421 47464-47465 47467 47476-47477 47480 47482 47553 47556 48132 48134 48136-48137 48511 48565 48567 48573 48591 48595 48919 48923 48935 48941 48943 49029-49031 49036-49037 49039 49061 49063 49069 49071 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/694/A271?format=ascii default J/A+A/694/A271/table2 Catalog of spiral galaxies (EXP) in DESI DR9 recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int RAJ2000 Right Ascension (J2000) (ra) deg pos.eq.ra;meta.main indexed DEJ2000 Declination (J2000) (dec) deg pos.eq.dec;meta.main indexed Release Camera and filter settings (release) meta.software int BrickId Brick sky position (brickid) meta.id double objId Catalog object number within the brick (objid) meta.id float zspec ? Spectroscopic redshift (z_spec) src.redshift double nullable zphotmed Photometric redshift (median) (z_phot_median) src.redshift.phot double rmag r-band apparent magnitude (mag_r) mag phot.mag;em.opt.R double Zpred Predicted gas-phase metallicity (Z_pred) phys.abund.Fe double