J/AJ/133/2559ivo://CDS.VizieR/J/AJ/133/2559doi:10.26093/cds/vizier.51332559CDSMaddox L.A.Cowan J.J.Kilgard R.E.Schinnerer E.Stockdale C.J.2009-06-25T21:49:40Z2009-06-25T21:43:26ZCDS support team

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

cds-question@unistra.frradio-sourcesgalaxiesastronomical-object-identificationWe report the analysis of deep radio observations of the interacting galaxy system M51 from the Very Large Array, with the goal of understanding the nature of the population of compact radio sources in nearby spiral galaxies. We detect 107 compact radio sources, 64% of which have optical counterparts in a deep H{alpha} Hubble Space Telescope image. Thirteen of the radio sources have X-ray counterparts from a Chandra observation of M51. We find that six of the associated H{alpha} sources are young supernova remnants (SNRs) with resolved shells. Most of the SNRs exhibit steep radio continuum spectral indices consistent with synchrotron emission. We detect emission from the Type Ic SN 1994I nearly a decade after explosion: the emission (160+/-22uJy/beam at 20cm, 46+/-11uJy/beam at 6cm, {alpha}=-1.02+/-0.28) is consistent with light-curve models for Type Ib/Ic supernovae. We detect X-ray emission from the supernova; however, no optical counterpart is present. We report on the analysis of the Seyfert 2 nucleus in this galaxy, including the evidence for bipolar outflows from the central black hole.2007AJ....133.2559Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/133/2559CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/252/102 : Radio sources in bright spiral galaxies. II. (Condon+, 1982)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/133/2559https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/133/2559http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/133/2559https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/133/2559https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/133/2559http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/133/2559GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/133/2559/table2 (Positions, Flux Densities and Spectral Indices of Point Sources in M51)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/133/2559/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/133/2559/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/133/2559/table2?GETtext/xml+votable180.050000true202.376916747.21405830.0055555555555555566/11026 11027https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/133/2559?format=asciiRadiodefaultJ/AJ/133/2559/table2Positions, Flux Densities and Spectral Indices of Point Sources in M51[MCK2007]Source numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_[MCK2007][b] Radio coincidence (1)meta.notecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainS20cm? 20cm (1.5GHz) flux density in {mu}Jy/beamuJyphot.flux.density;em.radio.750-1500MHzintnullablee_S20cm? Error in S20cm in {mu}Jy/beamuJystat.errorintnullableS6cm? 6cm (5GHz) flux density in {mu}Jy/beamuJyphot.flux.density;em.radio.3-6GHzintnullablee_S6cm? Error in S6cm in {mu}Jy/beamuJystat.errorintnullablel_alphaLimit flag on spectral indexmeta.code.error;pos.eq.racharalphaSpectral Index (2)spect.indexfloate_alpha? Error in spectral indexstat.error;pos.eq.rafloatnullableCXOUCXOU designation (JHHMMSS.s+DDMMSS) of X-ray counterpartmeta.idcharn_CXOU[a] X-ray coincidence (1)meta.notecharLX? X-ray luminosity in 0.3-2keV band of X-ray counterpart1e+30Wphys.luminosity;em.X-rayintnullableXTypeSource classification based on X-ray colourssrc.classchar