J/A+A/371/908ivo://CDS.VizieR/J/A+A/371/908doi:10.26093/cds/vizier.33710908CDSVazquez R.A.Baume G.2023-01-03T14:18:49Z2023-01-03T15:18:33ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomybroad-band-photometrymorgan-keenan-classificationA deep CCD UBVRI photometric survey combined with UBVRI polarimetric observations of 21 bright stars was carried out in the region of the open cluster Havlen-Moffat No. 1. Our data reveal that the extinction law in this cluster es variable and that six cluster stars show very high polarisation values (>4%), probably because of the presence of a nearby small dust cloud. The cluster is at a distance of d=3300pc, it is 2-4Myr old and the initial mass function of its most massive stars (M>3M_{sun}_) has a flat slope of x about of 0.7. As an additional result, it was possible to reconcile the absolute magnitudes of the two WN7-type members using the R-values valid in the regions where they are located.2001A&A...371..908Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/371/908CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/371/908https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/371/908http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/371/908https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/371/908https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/371/908http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/371/908GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/371/908/table1 (Photometric catalogue of the HM1 region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/371/908/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/371/908/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/371/908/table1?GETtext/xml+votable180.050000true259.752059-38.8144070.0055555555555555566/424383.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/371/908?format=asciiOpticalInfrareddefaultJ/A+A/371/908/table1Photometric catalogue of the HM1 regionSeqSequence numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHM1? Identification number of Havlen & Moffat, 1977A&A....58..351H and The et al., 1982ApL....22..109T (Cl HM 1 NNN in Simbad)meta.idintnullableXposX position (1)pixpos.cartesian.x;instr.detfloatYposY position (1)pixpos.cartesian.y;instr.detfloatVmag? V magnitudemagphot.mag;em.opt.Vfloatnullableu_Vmag[: ] uncertainty flag on Vmag (2)meta.code.errorcharB-VB-V colormagphot.color;em.opt.B;em.opt.Vfloatu_B-V[: ] uncertainty flag on B-V (2)meta.code.error;phot.color;em.opt.BcharU-B[]? U-B colormagphot.color;em.opt.U;em.opt.Bfloatnullableu_U-B[: ] uncertainty flag on U-B (2)meta.code.error;phot.color;em.opt.UcharV-R[]? V-R colormagphot.color;em.opt.V;em.opt.Rfloatnullableu_V-R[: ] uncertainty flag on V-R (2)meta.code.error;phot.color;em.opt.VcharV-I[]? V-I colormagphot.color;em.opt.V;em.opt.Ifloatnullableu_V-I[: ] uncertainty flag on V-I (2)meta.code.error;phot.color;em.opt.VcharLSS? LSS numbermeta.idintnullableSpTypeSpectral Typesrc.spTypecharr_SpTypeSpectral Type source (3)meta.ref;pos.framecharNote[*] Note (4)meta.notechar_RAPositions computed from (Xpos,Ypos) by VizieR (right ascension part)degpos.eq.ra;meta.main_DEPositions computed from (Xpos,Ypos) by VizieR (declination part)degpos.eq.dec;meta.main