J/AJ/162/224ivo://CDS.VizieR/J/AJ/162/224doi:10.26093/cds/vizier.51620224CDSStraizys V.Kazlauskas A.Boyle R.P.Janusz R.Zdanavicius J.,Raudeliunas S.Cernis K.Maskoliunas M.Macijauskas M.Cepas V.,Semionov D.2022-03-14T06:28:09Z2022-03-03T07:21:44ZCDS support team

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

cds-question@unistra.frinterstellar-mediumextinctionvilnius-photometryvisible-astronomytwo-color-diagramsstellar-spectral-typesInterstellar extinction in two concentric square areas of the sizes 1.25x1.25deg^2^ and 0.2x0.2deg^2^ in the direction of open cluster King7 is investigated applying two-dimensional photometric classification of stars observed in the Vilnius seven-color photometric system down to V=15.5mag (1084 stars) and 19.5mag (584 stars), respectively. The cluster members (284 stars) are identified applying their coordinates, proper motions, and parallaxes taken from the Gaia EDR3 catalog. New parameters of the cluster (distance, diameter, interstellar extinction, and age) are obtained. Photogeometric distances of stars are taken from Bailer-Jones et al. (2021) based on the Gaia parallaxes from EDR3. Physically the cluster is located at the outer edge of the Perseus spiral arm at d=2.74kpc, its diameter is 9.6pc, the age is 175{+/-}25Myr, the earliest stars are of spectral classes B6-B7. The average interstellar extinction A_V_=4.24mag. From the radial velocities of CO and the Galactic rotation curve we estimate distances to the nearby dust clouds TGU H989 P2 and P3 at 650-670pc from the Sun.2021AJ....162..224Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/224CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/20 : Catalogue of HII Regions (Sharpless 1959)VII/244 : Atlas and Catalog of Dark Clouds (Dobashi+, 2005)V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)J/BaltA/19/197 : King 7 Vilnius photometry (Zdanavicius+, 2010)J/PASJ/63/S1 : Atlas and catalog of dark clouds based on 2MASS (Dobashi+, 2011)J/A+A/558/A53 : Milky Way global survey star clusters. II. (Kharchenko+, 2013)J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)J/A+A/585/A31 : Vilnius photometry of TGU H994 P1 (Straizys+, 2016)J/A+A/590/A21 : Vilnius photometry near Sh 2-205 (Straizys+, 2016)J/MNRAS/470/3937 : 1876 open clusters multimembership catalog (Sampedro+, 2017)J/A+A/618/A93 : Gaia DR2 open clusters in the Milky Way (Cantat-Gaudin+, 2018)J/ApJ/885/131 : ~200 high-mass SFR plx & proper motion with VLBI (Reid+, 2019)J/A+A/633/A99 : Gaia DR2 open clusters in Milky Way. II (Cantat-Gaudin+, 2020)J/A+A/640/A1 : Portrait Galactic disc (Cantat-Gaudin+, 2020)J/AJ/159/95 : IC1369 Vilnius photo. & Gaia DR2 astrometry (Straizys+, 2020)J/MNRAS/504/356 : Updated parameters of 1743 open clusters (Dias+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/224https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/224http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/224https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/224https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/224http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/224GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/162/224/table1 (List of 1084 stars in the 1.5deg^2^ King7 area)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/224/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/224/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/224/table1?GETtext/xml+votable180.050000true58.741791752.27527780.005555555555555556Cone search capability for table J/AJ/162/224/table2 (Catalog of 985 stars observed in the 0.04deg^2^ King7 area)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/224/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/224/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/224/table2?GETtext/xml+votable180.050000true59.61862551.85844440.0055555555555555566/1781-1783 1788-17893.561607812030676e-19 3.741500294832266e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/162/224?format=asciiOpticaldefaultJ/AJ/162/224/table1List of 1084 stars in the 1.5deg^2^ King7 arearecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/1549] Sequential number (1)meta.id;meta.mainintRAJ2000[03/04] Hour of Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[51/52] Degree of Declination (J2000)pos.eq.dec;meta.mainVmag[8.21/15.5] Apparent V magnitude; Vilnius systemmagphot.mag;em.opt.VfloatU-V[1.37/6.65]? U-V color index; Vilnius systemmagphot.color;em.opt.U;em.opt.VfloatnullableP-V[1.05/5.76]? P-V color index; Vilnius systemmagphot.color;em.opt.V;em.opt.UfloatnullableX-V[0.67/4.15] X-V color index; Vilnius systemmagphot.color;em.opt.V;em.opt.BfloatY-V[0.29/1.65] Y-V color index; Vilnius systemmagphot.color;em.opt.B;em.opt.VfloatZ-V[0.1/0.72] Z-V color index; Vilnius systemmagphot.color;em.opt.V;em.opt.VfloatV-S[0.2/1.55]? V-S color index; Vilnius systemmagphot.color;em.opt.V;em.opt.RfloatnullableSpTPhotometric spectral type (2)src.spTypecharAV[0/5.53] Interstellar extinctionmagphys.absorptionfloatdphg[28/4583]? Photogeometric distance (3)pcpos.distanceintnullableJ/AJ/162/224/table2Catalog of 985 stars observed in the 0.04deg^2^ King7 arearecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/985] Sequential numbermeta.id;meta.mainintRAJ2000[03] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[51] Degree of Declination (J2000)pos.eq.dec;meta.mainVmag[10.6/20.8] Apparent V magnitude; Vilnius systemmagphot.mag;em.opt.VfloatU-V[0.94/7.18]? U-V color index; Vilnius systemmagphot.color;em.opt.U;em.opt.VfloatnullableP-V[-9.99/6.48]? P-V color index; Vilnius systemmagphot.color;em.opt.V;em.opt.UfloatnullableX-V[0.73/4.9] X-V color index; Vilnius systemmagphot.color;em.opt.V;em.opt.BfloatY-V[0.26/2.18] Y-V color index; Vilnius systemmagphot.color;em.opt.B;em.opt.VfloatZ-V[0.07/0.86]? Z-V color index; Vilnius systemmagphot.color;em.opt.V;em.opt.VfloatnullableV-S[0.1/2.25]? V-S color index; Vilnius systemmagphot.color;em.opt.V;em.opt.Rfloatnullablee_Vmag[0.01/0.08] Error in Vmagmagstat.error;phot.magfloate_U-V[0.02/0.3]? Error in U-Vmagstat.error;phot.color;em.opt.Ufloatnullablee_P-V[0.03/0.4]? Error in P-Vmagstat.errorfloatnullablee_X-V[0.02/0.2] Error in X-Vmagstat.errorfloate_Y-V[0.01/0.2] Error in Y-Vmagstat.errorfloate_Z-V[0.01/0.2]? Error in Z-Vmagstat.errorfloatnullablee_V-S[0.02/0.2]? Error in V-Smagstat.errorfloatnullableSpT? photometric spectral type (1)src.spTypecharAV[0/8.34]? interstellar extinctionmagphys.absorptionfloatnullabledphg[161/12069]? photogeometric distance (2)pcpos.distanceintnullableprob[0/1]? membership probabilitystat.probabilityfloatnullable