J/ApJ/882/9ivo://CDS.VizieR/J/ApJ/882/9doi:10.26093/cds/vizier.18820009CDSSanchez-Menguiano L.Sanchez Almeida J.Munoz-Tunon C.Sanchez S.F.,Filho M.Hwang H.-C.Drory N.2021-09-10T14:11:33Z2021-02-24T10:15:36ZCDS support team

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

cds-question@unistra.frchemical-abundancesgalaxiesspectroscopygalaxy-kinematicsgalaxy-classification-systemssurveysThe role of gas accretion in galaxy evolution is still a matter of debate. The presence of inflows of metal-poor gas that trigger star formation bursts of low metallicity has been proposed as an explanation for the local anticorrelation between star formation rate (SFR) and gas-phase metallicity (Z_g_) found in the literature. In the present study, we show how the anticorrelation is also present as part of a diversified range of behaviors for a sample of more than 700 nearby spiral galaxies from the SDSS-IV MaNGA survey. We have characterized the local relation between SFR and Z_g_ after subtracting the azimuthally averaged radial profiles of both quantities. Of the analyzed galaxies, 60% display an SFR-Z_g_ anticorrelation, with the remaining 40% showing no correlation (19%) or positive correlation (21%). Applying a random forest machine-learning algorithm, we find that the slope of the correlation is mainly determined by the average gas-phase metallicity of the galaxy. Galaxy mass, g-r colors, stellar age, and mass density seem to play a less significant role. This result is supported by the performed second-order polynomial regression analysis. Thus, the local SFR-Z_g_ slope varies with the average metallicity, with the more metal-poor galaxies presenting the lowest slopes (i.e., the strongest SFR-Z_g_ anticorrelations), and reversing the relation for more metal-rich systems. Our results suggest that external gas accretion fuels star formation in metal-poor galaxies, whereas in metal-rich systems, the gas comes from previous star formation episodes.2019ApJ...882....9Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/882/9CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/ApJ/695/259 : Massive metal-poor galaxies from SDSS (Peeples+, 2009)J/MNRAS/414/2602 : Automated classification of HIP variables (Dubath+, 2011)J/A+A/559/A114 : Updated O3N2 and N2 abundance indicators (Marino+, 2013)J/A+A/587/A70 : CALIFA face-on spiral galaxies (Sanchez-Menguiano+, 2016)J/AJ/154/86 : MaNGA catalog, DR15 (Wake+, 2017)J/MNRAS/466/2570 : Low ionization emission-line regions (Belfiore+, 2017)J/A+A/623/A122 : Sample of MaNGA galaxies properties (Pilyugin+, 2019)J/A+A/623/A171 : Mkn 848 MaNGA 3-D data cube (Perna+, 2019)http://www.sdss.org/ : SDSS home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/882/9https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/882/9http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/882/9https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/882/9https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/882/9http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/882/9GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/882/9/table2 (Galaxy properties and derived slopes for the local SFR-Z_g_ relation)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/882/9/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/882/9/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/882/9/table2?GETtext/xml+votable180.050000true122.522873055646.1930250.0055555555555555565/1489 2377 2408 2457 2564 2567 2573 5801 6/1 553 640 4661 4663 4705 4716 4730 4731 4733 4734 4735 4745 4748 4749 4751 4755 4759 4773 4784 4793 4794 4795 4800 4821 4825 4827 4829 4830 4845 4847 4848 4852 4853 4855 4860 4903 4904 4907 4909 4910 4919 4924 4937 4938 4960 4964 4992 4993 5009 5024 5025 5117 5295 5306 5351 5360 5362 5368 5372 5469 5494 5528 5530 5533 5535 5551 5552 5553 5556 5558 5559 5560 5561 5564 5565 5566 5574 5577 5600 5601 5607 5615 5616 5617 5618 5620 5627 5629 5630 5638 5649 5652 5656 5669 5670 5671 5688 5690 5715 5717 5739 5741 5748 5751 5752 5755 5757 5758 5800 5801 5803 5810 5816 5819 5825 5826 5827 5828 5830 5834 5836 5840 5841 5844 5857 5862 5865 5867 5888 5889 5917 5918 5919 5920 5921 5928 5965 5966 5989 6211 6212 6213 6214 6216 6217 6222 6226 6230 6234 6236 6241 6243 6247 6254 6259 6261 6262 6264 6268 6340 6390 6395 6396 6438 6443 6445 6446 6447 6456 6458 6528 6532 6539 6540 6543 6544 6545 6548 6552 6553 6555 6559 6561 6562 6563 6564 6572 6576 6578 6579 6580 6581 6584 6585 6587 6588 6589 6599 6602 6604 6605 6625 6626 6627 6633 6635 6637 6638 6639 6643 6647 6654 6741 6929 6930 7169 7172 7173 7186 7215 7225 7231 7232 7233 7235 7308 7309 7315 7317 7318 7319 7321 7330 7331 7337 7339 7360 7366 7369 8565 8567 8699 8700 8701 8702 8890 8891 9060 9067 9071 9111 9162 9249 9258 9261 9264 9265 9266 9341 9345 9346 9359 9364 9365 9367 9369 9373 9374 9418 9463 9465 9466 9467 9468 9470 9471 9472 9473 9475 9480 9481 9484 9485 9504 9505 9507 9512 9516 9605 9641 9642 9644 9646 9647 9788 9809 9812 9813 9814 9818 9821 9834 9837 9839 9840 9849 9851 9853 9855 9875 9878 9881 9882 9884 9885 9887 9891 9894 9895 9898 9900 9903 9906 9907 9909 9923 9925 9928 9929 9931 9946 9958 9961 9986 9990 9998 10017 10019 10022 10024 10026 10062 10095 10104 10179 10180 10182 10183 10191 10192 10195 10200 10201 10202 10213 10215 10226 10244 10247 10261 10267 10291 10296 10302 10304 10312 10350 10370 10380 10382 10391 10398 10399 10402 10403 10422 10430 10431 10433 10434 10437 10438 10441 10442 10443 10451 10453 10455 10456 10459 10460 10461 10472 10493 10581 10592 10594 10596 10627 10652 10658 10663 10668 10669 10672 10689 10691 10694 10695 10701 10703 10709 10720 10721 10748 10749 10775 10816 10863 10869 10870 10872 10911 10927 10932 10933 10949 10950 10952 10954 10955 10956 10963 10976 10977 10978 11023 11041 11043 11044 11268 11273 11276 11283 11290 11297 11301 11304 11312 11313 11314 11321 11322 11356 11358 11379 11380 11381 11396 11403 11406 11410 11412 11416 11432 11595 12387 12391 12392 12396 12398 12399 12552 12554 17741 17743 17747 17748 17750 17755 17758 18771 18777 19096 19097 19098 19109 19385 22716 23047 23051 23076 23181 23182 23183 23186 23188 23189 23191 23194 23198 23201 23202 23203 23208 23209 23210 23216 27303 27312 27314 28127 28148 28149 28282 28356 28357 28363 28366 28369 28370 28384 28629 28636 28638 30037 30043 30044 32499 32501 32508 32672 32680https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/882/9?format=asciiOpticaldefaultJ/ApJ/882/9/table2Galaxy properties and derived slopes for the local SFR-Z_g_ relationg-r[-1.1/1.6] g-r color indexmagphot.color;em.opt.B;em.opt.RfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMaNGAGalaxy identifier defined as the [plate]-[ifudesign] of the MaNGA observations (Wake+, 2017, J/AJ/154/86)meta.id;meta.maincharAbund[8.17/8.7]? Gas-phase oxygen abundance ([12+log(O/H)]) value at disk effective radiusphys.abundfloatnullableMass[7.7/11.3] Galaxy masslog(solMass)phys.massfloatLW-age[7.3/10]? Average LW stellar age at disk effective radiuslog(yr)time.age;stat.meanfloatnullableSigma*[-1.3/3.3]? Average stellar mass density at disk effective radiuslog(solMass.pc**-2)pos.distance;stat.meanfloatnullableSFR[-2.1/1.8] Integrated SFRlog(solMass.yr**-1)phys.SFRfloatMType[1/10] Morphological typesrc.morph.typefloatLW-Z[-0.5/0.02]? Average LW stellar metallicity at disk effective radiuslog(Sun)phys.abund.Zfloatnullablesigma0[0/280] Central stellar velocity dispersionkm/sphys.veloc.dispersionfloat[O/H][-0.4/0.5]? Slope of the oxygen abundance gradientarith.grad;phys.abundfloatnullablesSFR[-2.8/1.2] Specific star formation ratelog(Gyr**-1)phys.SFRfloatSFR-Zg[-0.2/0.11] Slope of the local SFR-Z_g_ relationstat.fit.paramfloate_SFR-Zg[0.001/0.4] SFR-Zg uncertaintystat.errorfloatSloanDisplay the online SDSS-DR15 online data for the nearest objectmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from MaNGA DR15 (Wake+, 2017, J/AJ/154/86) (right ascension part)degpos.eq.ra;meta.main_DEPositions from MaNGA DR15 (Wake+, 2017, J/AJ/154/86) (declination part)degpos.eq.dec;meta.main