J/AJ/127/660ivo://CDS.VizieR/J/AJ/127/660doi:10.26093/cds/vizier.51270660CDSSaviane I.Hibbard J.E.Rich R.M.2023-04-06T16:51:06Z2004-12-08T21:37:37ZCDS support team

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

cds-question@unistra.frgalaxiesphotometrystellar-associationsinfrared-photometryvisible-astronomyWe have used the Hubble Space Telescope and Wide Field Planetary Camera 2 to image the putative tidal dwarf galaxy located at the tip of the Southern tidal tail of NGC 4038/4039, the Antennae. We resolve individual stars and identify two stellar populations. Hundreds of massive stars are present, concentrated into tight OB associations on scales of 200pc, with ages ranging from 2 to 100Myr. An older stellar population is distributed roughly following the outer contours of the neutral hydrogen in the tidal tail; we associate these stars with material ejected from the outer disks of the two spirals. The older stellar population has a red giant branch tip at I=26.5+/-0.2 from which we derive a distance modulus (m-M)_0_=30.7+/-0.25. The implied distance of 13.8+/-1.7Mpc is significantly smaller than commonly quoted distances for NGC 4038/4039. In contrast to the previously studied core of the merger, we find no superstar clusters (SSCs).2004AJ....127..660Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/127/660CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/109/960 : Young star clusters in The Antennae (Whitmore+ 1995)J/ApJ/561/727 : BVI photometry in the Antennae galaxies (Zhang+, 2001)J/ApJ/599/1049 : Supergiant molecular complexes in the Antennae (Wilson+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/127/660https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/127/660http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/127/660https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/127/660https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/127/660http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/127/660GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/127/660/table1 (Photometry of individual stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/660/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/660/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/660/table1?GETtext/xml+votable180.050000true180.36927083-18.985119440.005555555555555556Cone search capability for table J/AJ/127/660/table2 (Photometric properties of the eight associations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/660/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/660/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/660/table2?GETtext/xml+votable180.050000true180.3522083-19.0090.0055555555555555566/25344https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/127/660?format=asciiOpticalInfrareddefaultJ/AJ/127/660/table1Photometry of individual starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int[SHR2004]Stellar identification number, [SHR2004] Star NNN in SimbadintRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainVmagTrue Johnson V-band magnitudemagfloatF555WmagTrue HST F555W-band magnitudemagfloate_F555WmagPhotometric error in F555WmagmagfloatV-IcThe Johnson V-I (Cousins) colormagfloatF555W-F814WHST F555W-F814W colormagfloate_F555W-F814WPhotometric error in F555W-F814WmagfloatChipThe WFPC2 chip identification numberintJ/AJ/127/660/table2Photometric properties of the eight associationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int[SHR2004]Sequential number of the region, [SHR2004] Assoc N in Simbadint[MLD92]Mirabel et al. (1992A&A...256L..19M) designationcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainNBlueNumber of blue stars ((V-I)0<=0.5)intNTotTotal number of starsintIcMAGBAbsolute Cousins I magnitude for blue stars (1)magfloatVMAGBAbsolute V magnitude for blue stars (1)magfloat(V-Ic)0BDereddened V-I Cousins colour for blue starsmagfloatIcMAGTAbsolute Cousins I magnitude for all stars (1)magfloatVMAGTAbsolute V magnitude for all stars (1)magfloat(V-Ic)0TDereddened V-I Cousins colour for all starsmagfloat