J/AJ/127/2771ivo://CDS.VizieR/J/AJ/127/2771doi:10.26093/cds/vizier.51272771CDSRicher H.B.Fahlman G.G.Brewer J.Davis S.Kalirai J.Stetson P.B.,Hansen B.M.S.Rich R.M.Ibata R.A.Gibson B.K.Shara M.2023-04-06T16:51:04Z2005-09-02T15:32:05ZCDS support team

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

cds-question@unistra.frglobular-star-clustersdwarf-starsproper-motionsWe present new results from a photometric study of the main-sequence stars in M4 (NGC 6121=C1620-264), the closest globular cluster to the Sun. Multifield, multiepoch observations at approximately 1, 2, and 6 core radii were obtained with WFPC2 on the Hubble Space Telescope through either the F606W filter or the F555W (V) and F814W (I) filters. The multi-epoch observations allowed us to clean the data on the basis of proper motion and thus separate cluster from field stars or extragalactic objects.2004AJ....127.2771Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/127/2771CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/120/265 : HST photometry of M4 (Ibata+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/127/2771https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/127/2771http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/127/2771https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/127/2771https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/127/2771http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/127/2771GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/127/2771/catalog (Photometry and Astrometry of M4 stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/2771/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/2771/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/2771/catalog?GETtext/xml+votable180.050000true245.8968-26.53720.0055555555555555566/42955https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/127/2771?format=asciiOpticaldefaultJ/AJ/127/2771/table3Exposure RecordrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField number in radius coreintDateYear of the observationyrintPIDProgram identification number of the observationintFiltFiltercharExpTimeExposure timesintFramesNumber of framesintComCommentscharJ/AJ/127/2771/catalogPhotometry and Astrometry of M4 starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainF555W[19/34] The F555W-band magnitudemagfloatF814W[17/28] The F814W-band magnitudemagfloatpmRARight ascension proper motion times the cosine of the declination (1)mas/yrfloatpmDEDeclination proper motion (1)mas/yrfloat