J/MNRAS/516/2300ivo://CDS.VizieR/J/MNRAS/516/2300doi:10.26093/cds/vizier/bg-g4-27wCDSJoseph P.Sreekumar P.Stalin C.S.Paul K.T.Mondal C.George K.,Mathew B.2026-08-03T07:31:45Z2025-10-03T08:52:03ZCDS support team

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

cds-question@unistra.frgalaxiesyoung-stellar-objectsstellar-populationsastrometryultraviolet-photometrystellar-agesSupermassive black holes at the centre of active galactic nuclei (AGNs) produce relativistic jets that can affect the star formation characteristics of the AGN hosts. Observations in the ultraviolet (UV) band can provide an excellent view of the effect of AGN jets on star formation. Here, we present a census of star formation properties in the Northern Star-forming Region (NSR) that spans about 20 kpc of the large radio source Centaurus A hosted by the giant elliptical galaxy NGC 5128. In this region, we identified 352 UV sources associated with Cen A using new observations at an angular resolution of <1.5 arcsec observed with the Ultra-Violet Imaging Telescope (UVIT) onboard AstroSat. These observations were carried out in one far-ultraviolet (FUV; {lambda}_mean_ = 1481 {AA}) and three near-ultraviolet (NUV; with {lambda}_mean_ of 2196, 2447, and 2792 {AA}, respectively) bands. The star-forming sources identified in UV tend to lie in the direction of the jet of Cen A, thereby suggesting jet triggering of star formation. Separating the NSR into Outer and Inner regions, we found the stars in the Inner region to have a relatively younger age than the Outer region, suggesting that the two regions may have different star formation histories. We also provide the UVIT source catalogue in the NSR.2022MNRAS.516.2300Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/516/2300CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/474/4056 : Cen A MWA 154MHz image (McKinley+, 2018)J/MNRAS/478/3447 : SDSS post-merger galaxies HI data (Ellison+, 2018)J/A+A/595/A65 : APEX spectra of Centaurus A (Salome+, 2016)J/A+A/608/A98 : APEX spectra of Centaurus A (Salome+, 2017)J/other/NatAs/6.109 : Centaurus A (NGC 5128) 185MHz MWA image (McKinley+, 2022)I/352 : Distances to 1.47 billion stars in Gaia EDR3https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/516/2300https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/516/2300http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/516/2300https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/516/2300https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/516/2300http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/516/2300GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/516/2300/table2 (NSR source catalogue and their properties from observations with UVIT telescope)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/516/2300/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/516/2300/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/516/2300/table2?GETtext/xml+votable180.050000true201.455282181548-43.00050609140220.005555555555555556Cone search capability for table J/MNRAS/516/2300/tableb1 (Observing properties and estimated ages of star-forming sources inside NSR Inner region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/516/2300/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/516/2300/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/516/2300/tableb1?GETtext/xml+votable180.050000true201.557877862215-42.99382952131310.005555555555555556Cone search capability for table J/MNRAS/516/2300/tableb2 (Observing properties and estimated ages of star-forming sources inside NSR Outer region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/516/2300/tableb2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/516/2300/tableb2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/516/2300/tableb2?GETtext/xml+votable180.050000true201.578879739382-42.87040597926160.0055555555555555566/43262-432637.11477698798347e-19 1.3412867710182981e-18https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/516/2300?format=asciiUVdefaultJ/MNRAS/516/2300/table2NSR source catalogue and their properties from observations with UVIT telescoperecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMoreLink to tableb1 & tableb2meta.ref.urlcharIDIdentifier raw number (label)meta.id;meta.mainintprimaryRAJ2000Right ascension (J2000) (RA_J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (DEC_J2000)degpos.eq.dec;meta.mainAreaThe isophotal areas of NSR sources for photometry acquisition (Area)pc**2phys.area;phot;obsdoubleFF148WThe UVIT flux in FUV F148W filter centered on 148.1nm (F148W flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.100-200nm;obsdoublee_FF148WUncertainty of FF148W (F148W flux error)0.01W.m**-2.nm**-1stat.errordoubleFN219MThe UVIT flux in NUV N219M filter centered on 219.6nm (N219M flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN219MUncertainty of FN219M (N219M flux error)0.01W.m**-2.nm**-1stat.errordoubleFN245MThe UVIT flux in NUV N245M filter centered on 244.7nm (N245M flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN245MUncertainty of FN245M (N245M flux error)0.01W.m**-2.nm**-1stat.errordoubleFN279NThe UVIT flux in NUV N279N filter centered on 279.2nm (N279N flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN279NUncertainty of FN279N (N279N flux error)0.01W.m**-2.nm**-1stat.errordoubleJ/MNRAS/516/2300/tableb1Observing properties and estimated ages of star-forming sources inside NSR Inner regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentifier raw number (label)meta.id;meta.mainintRAJ2000Right ascension (J2000) (RA_J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (DEC_J2000)degpos.eq.dec;meta.mainAreaThe isophotal areas of NSR sources for photometry acquisition (Area)pc**2phys.area;phot;obsdoubleFF148WThe UVIT flux in FUV F148W filter centered on 148.1nm (F148W_flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.100-200nm;obsdoublee_FF148WUncertainty of FF148W (F148W_flux_error)0.01W.m**-2.nm**-1stat.errordoubleFN219MThe UVIT flux in NUV N219M filter centered on 219.6nm (N219M_flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN219MUncertainty of FN219M (N219M_flux_error)0.01W.m**-2.nm**-1stat.errordoubleFN245MThe UVIT flux in NUV N245M filter centered on 244.7nm (N245M_flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN245MUncertainty of FN245M (N245M_flux_error)0.01W.m**-2.nm**-1stat.errordoubleFN279NThe UVIT flux in NUV N279N filter centered on 279.2nm (N279N_flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN279NUncertainty of FN279N (N279N_flux_error)0.01W.m**-2.nm**-1stat.errordoubleC1magJ/MNRAS/516/2300/tableb2Observing properties and estimated ages of star-forming sources inside NSR Outer regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentifier raw number (label)meta.id;meta.mainintRAJ2000Right ascension (J2000) (RA_J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (DEC_J2000)degpos.eq.dec;meta.mainAreaThe isophotal areas of NSR sources for photometry acquisition (Area)pc**2phys.area;phot;obsdoubleFF148WThe UVIT flux in FUV F148W filter centered on 148.1nm (F148W_flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.100-200nm;obsdoublee_FF148WUncertainty of FF148W (F148W_flux_error)0.01W.m**-2.nm**-1stat.errordoubleFN219MThe UVIT flux in NUV N219M filter centered on 219.6nm (N219M_flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN219MUncertainty of FN219M (N219M_flux_error)0.01W.m**-2.nm**-1stat.errordoubleFN245MThe UVIT flux in NUV N245M filter centered on 244.7nm (N245M_flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN245MUncertainty of FN245M (N245M_flux_error)0.01W.m**-2.nm**-1stat.errordoubleFN279NThe UVIT flux in NUV N279N filter centered on 279.2nm (N279N_flux)0.01W.m**-2.nm**-1phot.flux.density;em.UV.200-300nm;obsdoublee_FN279NUncertainty of FN279N (N279N_flux_error)0.01W.m**-2.nm**-1stat.errordoubleC1mag