J/ApJ/894/57ivo://CDS.VizieR/J/ApJ/894/57doi:10.26093/cds/vizier.18940057CDSSun J.Barger K.A.Frinchaboy P.M.Pan K.2021-12-03T12:39:35Z2021-10-19T13:37:19ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopysurveysWe explore the environmental influences on the star formation (SF) in low-mass galaxies with stellar mass 8<=log(M_*_/M_{sun}_)<=10 at a redshift of 0.01<z<0.07. We identify the neighboring galaxies for our sample using the spectroscopically observed galaxies in the Sloan Digital Sky Survey (SDSS). Our 287 selected pair candidates have a neighboring galaxy with a stellar mass ratio of M_Neighbor_/M_Candidate_<=4 at a projected separation within d_proj_<=1500kpc and a line-of-sight kinematic separation of {Delta}v_LOS_<=300km/s. Our control galaxies are isolated from other galaxies within a projected radius of 1500kpc. All selected galaxies in our sample are spectroscopically observed by the fourth generation of SDSS/Mapping Nearby Galaxies at Apache Point Observatory (SDSS-IV/MaNGA) integral field spectroscopy survey. We radially bin our selected galaxies into three regions with a radial distance of 0<=R/R_e_<=0.5 (inner), 0.5<=R/R_e_<=1.0 (middle), and 1.0<=R/R_e_<=1.5 (outer), in which R_e_ is the effective radius at where the galaxy emit half of its light. We conclude that the SF activities in low-mass galaxies are affected by their environmental conditions when {Delta}v_LOS_<=100km/s at d_proj_<=400kpc. We use stellar-mass-weighted SF rate surface density ({Sigma}SFR/M_*_) to describe the SF strength in each radially binned region. For the pair candidates with 0.25<=M_Neighbor_/M_Candidate_<=4 at d_proj_<=100kpc and {Delta}v_LOS_<=100km/s, we observe an SF enhancement of f_{Delta}SF_=1.75+/-0.96 (f_{Delta}SF_=[({Sigma}SFR/M_*_)_Pair_-({Sigma}SFR/M_*_)_Control,mean_] /({Sigma}SFR/M_*_)_Control,mean_) in their inner regions, which decreases with increasing galactic radii.2020ApJ...894...57Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/894/57CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/A+A/517/A50 : Ages & luminosities of young SMC/LMC clusters (Glatt+, 2010)J/AJ/143/98 : Spec. of star-forming regions in NGC 4194 (Weistrop+, 2012)J/AJ/154/86 : MaNGA catalog, DR15 (Wake+, 2017)J/MNRAS/476/1765 : MaNGA E and S galaxies properties (Li+, 2018)J/MNRAS/477/4711 : Stellar angular momentum for ManGa galaxies (Graham+, 2018)J/A+A/623/A122 : Sample of MaNGA galaxies properties (Pilyugin+, 2019)J/ApJ/882/9 : SFR & metallicity in MaNGA gal. (Sanchez-Menguiano+, 2019)http://www.sdss.org/ : SDSS home pagehttp://nsatlas.org/ : NASA-Sloan Atlas home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/894/57https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/894/57http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/894/57https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/894/57https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/894/57http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/894/57GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/894/57/table1 (Information for galaxies in our sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/894/57/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/894/57/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/894/57/table1?GETtext/xml+votable180.050000true173.0864530622.630161110.0055555555555555565/2314 6/4663 4706 4717 4732-4734 4747 4756 4773 4781 4787 4795 4819 4821 4828-4829 4831 4844-4845 4847-4848 4850 4853 4855 4903-4904 4907 4910 4919-4920 4922 4939 4960 4994 5009 5025 5306-5307 5362 5371 5373 5470 5492 5523 5527 5530 5558 5560 5574 5577 5600 5605 5609 5618 5620 5633 5650 5656 5679 5748 5755-5756 5759 5783 5800-5801 5803 5810 5828 5833 5844 5862 5868 5890 5908 5919-5920 5954-5958 5967 5970-5971 5989 6213-6216 6219 6222 6226 6236 6241 6367 6387 6390 6395 6442 6444 6456 6459 6531 6540 6546 6548 6552 6561 6564 6567 6571-6572 6577 6582-6584 6586 6589 6597 6599 6601 6603-6605 6608 6633 6640 6655 6741 6913 6933 6993 7173 7215 7233 7301 7314-7315 7318-7319 7338 8565 9057-9058 9067 9111 9153 9161-9163 9231 9242 9250 9266 9333 9346 9350 9364 9367 9371 9374 9416 9418 9463 9468 9474 9484 9487 9508 9510 9604 9606 9633 9640 9646 9785 9788 9807 9813-9814 9829-9830 9834-9835 9844 9849-9850 9855 9878 9880 9882-9883 9887 9891 9901-9902 9909-9910 9920 9923 9925 9952 9961 9963 9993 10016 10018 10022 10024 10179 10182 10213 10215 10244 10256 10258 10263-10264 10267-10268 10270 10290 10293-10295 10300 10312 10336 10351 10382 10398 10430 10436 10455 10484 10487 10493 10621 10623 10633 10635-10637 10649 10658 10663 10668 10673 10691 10695 10700 10703 10707 10720-10721 10726 10863 10927 10930 10933 10937 10941 10951-10952 10956 10962 11041-11042 11283 11288 11290 11296-11297 11299 11302 11304 11321-11322 11348 11396 11402-11403 11410 11412 11416 11428 11594-11595 12387 12391 12396 12399 12554 17748 17753-17755 18300 18772 19097 19099 19112 19116 19390 22717 23060 23076 23181-23183 23206 23210 23212 23216 27308 27314 28280 28282-28283 28319 28357 28359 28368 28384 32499 32501-32502 32508 36863https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/894/57?format=asciidefaultJ/ApJ/894/57/table1Information for galaxies in our sampleVlos[0/494]? Difference in line-of-sight velocity to the nearest neighborkm/sphys.veloc;arith.diffintnullableMratio[0/4]? Nearest neighbor to pair candidate stellar mass ratiophys.mass;arith.ratiofloatnullableSFRin[0.0001/0.4] SF surface density for the Inner regionsolMass.yr**-1.arcsec**-2phys.SFRfloatSFRmid[0.0001/0.14] SF surface density for the Middle regionsolMass.yr**-1.arcsec**-2phys.SFRfloatSFRout[0/0.06] SF surface density for the Outer regionsolMass.yr**-1.arcsec**-2phys.SFRfloatSFRfiber[0.0008/2]? SFR for the region within the 3-arcsec fibersolMass/yrphys.SFRdoublenullablefspinFraction of valid spaxels within the Inner regionmeta.numbercharfspmidFraction of valid spaxels within the Middle regionmeta.numbercharfspoutFraction of valid spaxels within the Outer regionmeta.numbercharSloanDisplay the online SDSS-DR14 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.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPlateIFUString combination of plate-ifudesign in MaNGAmeta.idcharMaNGAMaNGA ID (NN-NNNNNN)meta.id;meta.maincharCategoryCategory to which the selected galaxy belongssrc.classcharRe[1.16/13.4] Effective radius derived from elliptical Petrosian analysisarcsecphys.angSizefloatb/a[0.3/0.98] Semi-minor to semi-major axis ratio derived from elliptical Petrosian analysisphys.angSize;arith.ratiofloatlogM[8/10] Stellar mass in logarithm derived from K-correction fit in the NSA cataloglog(solMass)phys.massfloatdproj[11/9497] Projected separation to the nearest neighborkpcpos.angDistanceint