J/A+A/548/A129ivo://CDS.VizieR/J/A+A/548/A129doi:10.26093/cds/vizier.35480129CDSFusco F.Buonanno R.Bono G.Cassisi S.Monelli M.Pietrinferni A.2017-06-21T08:21:53Z2012-12-06T07:52:44ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryhst-photometrystellar-distanceOn the basis of a new photometric analysis of the Local Group dwarf irregular galaxy NCG 6822 based on observations obtained with the Advanced Camera for Surveys onboard the Hubble Space Telescope, we have obtained a new estimate of the extinction of two fields located in the southeast region of the galaxy. Because of significant differences in the distance estimates to NGC 6822 available in literature, we decided to provide an independent determination of the distance to this galaxy based on an updated and self-consistent theoretical calibration of the tip of the red giant branch brightness. As a result we newly determined the distance to NGC 6822 to be equal to (m-M)_0_=23.54+/-0.05, and compared our measurement with the most recent determinations of this distance.2012A&A...548A.129Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/548/A129CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/109/173 : BVR photometry of NGC 6822 (Marconi+ 1995)J/AJ/110/2715 : UBV photometry in NGC 6822, M31 and M33 (Massey+ 1995)J/AJ/121/2020 : CTIO and WFPC2 photometry in NGC 6822 (Bianchi+, 2001)J/AJ/123/832 : C star population in NGC 6822 (Letarte+, 2002)J/A+A/429/837 : IJKs photometry of late-type stars in NGC 6822 (Cioni+, 2005)J/A+A/431/1189 : BV photometry of NGC 6822 variables (Baldacci+, 2005)J/A+A/454/717 : NGC 6822 near-IR photometry of C and AGB stars (Kang+, 2006)J/A+A/456/905 : JKs, i'g'r' photometry of C stars in NGC 6822 (Demers+, 2006)J/AJ/128/2815 : ARAUCARIA: NGC 6822 Cepheid variables (Pietrzynski+, 2004)J/AJ/132/378 : HST and UV photometry of NGC 6822 (Bianchi+, 2006)J/AJ/132/1372 : Chandra observation of NGC 6822 (Tennant+, 2006)J/ApJ/647/1056 : ARAUCARIA: NGC 6822 Cepheid variables (Gieren+, 2006)J/A+A/450/873 : NGC 6822 bright variables VI phot. (Mennickent+, 2008)J/A+A/495/447 : PN and HII regions in NGC6822 (Hernandez-Martinez+, 2009)J/A+A/537/A108 : NGC 6822 AGB spectroscopic catalogue (Kacharov+, 2012)J/A+A/540/A135 : AGB population of NGC 6822 (Sibbons+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/548/A129https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/548/A129http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/548/A129https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/548/A129https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/548/A129http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/548/A129GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/548/A129/ngc6822 (HST/ACS photometry in the irregular galaxy)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/548/A129/ngc6822?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/548/A129/ngc6822?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/548/A129/ngc6822?GETtext/xml+votable180.050000true296.255510556-14.8104405560.0055555555555555566/29716 297182.3657755224268815e-19 4.369938604086476e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/548/A129?format=asciiOpticaldefaultJ/A+A/548/A129/ngc6822HST/ACS photometry in the irregular galaxyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFSimbad column added by the CDSobs.fieldcharIDStar identification numbermeta.id;meta.mainintXposX coordinate in pixelspixpos.cartesian.xdoubleYposY coordinate in pixelspixpos.cartesian.ydoubleF475WMagnitude in HST/ACS F475W bandmagphot.mag;em.opt.Bfloate_F475WError associated to F475W magnitudemagstat.errorfloatF814WMagnitude in HST/ACS F814W bandmagphot.mag;em.opt.Ifloate_F814WError associated to F814W magnitudemagstat.errorfloatChiMean value of the {chi} image-quality indexmeta.code;spect.index;stat.meanfloatSharpMean value of the sharp image-quality index (<0 for cosmic rays, >0 for resolved sources)stat.fit.paramfloatRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)pos.eq.dec;meta.mainindexedChip[1/2] Chip of the camera (1=WFC1, 2=WFC2)meta.noteint