J/A+A/623/A154ivo://CDS.VizieR/J/A+A/623/A154doi:10.26093/cds/vizier.36230154CDSRosado-Belza D.Lisenfeld U.Hibbard J.Kniermann K.Ott J.Verley S.,Boquien M.Jarrett T.Xu C.K.2023-12-21T15:30:26Z2019-03-25T14:37:39ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyradio-spectroscopyinterstellar-mediumMinor mergers play a crucial role in galaxy evolution. UGC 10214 (the Tadpole galaxy) is a prime example of this process in which a dwarf galaxy has interacted with a large spiral galaxy ~250 Myr ago and produced a perturbed disc and a giant tidal tail. We used a multi-wavelength dataset that partly consists of new observations (H{alpha}, HI, and CO) and partly of archival data to study the present and past star formation rate (SFR) and its relation to the gas and stellar mass at a spatial resolution down to 4 kpc. UGC 10214 is a high-mass (stellar mass M_*_=1.28x10^11^ M_{sun}_) galaxy with a low gas fraction (M_gas_/M_*_=0.24), a high molecular gas fraction (M_H2_/M_HI_=0.4), and a modest SFR (2-5 M_{sun}_/yr). The global SFR compared to its stellar mass places UGC 10214 on the galaxy main sequence (MS). The comparison of the molecular gas mass and current SFR gives a molecular gas depletion time of about ~2 Gyr (based on H{alpha}), comparable to those of normal spiral galaxies. Both from a comparison of the H{alpha} emission, tracing the current SFR, and far-ultraviolet (FUV) emission, tracing the recent SFR during the past tens of Myr, and also from spectral energy distribution fitting with CIGALE, we find that the SFR has increased by a factor of about 2-3 during the recent past. This increase is particularly noticeable in the centre of the galaxy where a pronounced peak of the H{alpha} emission is visible. A pixel-to-pixel comparison of the SFR, molecular gas mass, and stellar mass shows that the central region has had a depressed FUV-traced SFR compared to the molecular gas and the stellar mass, whereas the H{alpha}-traced SFR shows a normal level. The atomic and molecular gas distribution is asymmetric, but the position-velocity diagram along the major axis shows a pattern of regular rotation. We conclude that the minor merger has most likely caused variations in the SFR in the past that resulted in a moderate increase of the SFR, but it has not perturbed the gas significantly so that the molecular depletion time remains normal.2019A&A...623A.154Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/623/A154CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/612/202 : Catalog of spheroids in UGC 10214 field (Menanteau+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/623/A154https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/623/A154http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/623/A154https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/623/A154https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/623/A154http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/623/A154GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/623/A154/spco10 (List of CO(1-0) spectra of the disk of UGC 10214)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/623/A154/spco10?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/623/A154/spco10?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/623/A154/spco10?GETtext/xml+votable180.050000true241.52555.42570.005555555555555556Cone search capability for table J/A+A/623/A154/spco21 (List of CO(2-1) spectra of the disk of UGC 10214)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/623/A154/spco21?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/623/A154/spco21?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/623/A154/spco21?GETtext/xml+votable180.050000true241.52555.42570.005555555555555556Cone search capability for table J/A+A/623/A154/list (List of fits files)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/623/A154/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/623/A154/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/623/A154/list?GETtext/xml+votable180.050000true241.5544755.429440.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/623/A1546/11521https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/623/A154?format=asciiMillimeterdefaultJ/A+A/623/A154/spco10List of CO(1-0) spectra of the disk of UGC 10214ScanScan numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObjectObjectmeta.notecharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainFreqObserved frequencyGHzem.freqfloatObs.DateObservation datetime.epoch;obsnullablespplot of $CO(1-0)$ spectrummeta.ref.urlcharJ/A+A/623/A154/spco21List of CO(2-1) spectra of the disk of UGC 10214recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintScanScan numbermeta.id;meta.mainintObjectObjectmeta.notecharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainFreqObserved frequencyGHzem.freqfloatObs.DateObservation datetime.epoch;obsnullablespplot of $CO(2-1)$ spectrummeta.ref.urlcharJ/A+A/623/A154/listList of fits filesRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintNz? Number of slices, for the datacubemeta.numberintnullableObs.DateObservation date (YYYY-MM-DDThh:mm:ss.s)stime.epoch;obsnullablebVLSR? Lower value of Vlsr interval for the datacubekm/sphys.veloc;time.interval;stat.minfloatnullableBVLSR? Upper value of Vlsr interval for the datacubekm/sphys.veloc;time.interval;stat.maxfloatnullabledVLSR? Vlsr resolution for the datacubekm/sspect.resolutionfloatnullablebFreq? Lower value of relative frequency interval for the specraHzem.freq;stat.mindoublenullableBFreq? Upper value of relative frequency interval for the specraHzem.freq;stat.maxdoublenullabledFreq? Frequency resolution for the specraHzspect.resolutiondoublenullablesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar