J/MNRAS/522/367ivo://CDS.VizieR/J/MNRAS/522/367doi:10.26093/cds/vizier.75220367CDSLegnardi M.V.Milone A.P.Cordoni G.Lagioia E.P.Dondoglio E.,Marino A.F.Jang S.Mohandasan A.Ziliotto T.2024-08-22T20:17:17Z2023-05-30T11:10:26ZCDS support team

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

cds-question@unistra.frglobular-star-clustershst-photometryultraviolet-astronomyvisible-astronomyThe presence of differential reddening in the direction of Galactic globular clusters (GCs) has proven to be a serious limitation in the traditional colour-magnitude diagram (CMD) analysis. Here, we estimate local reddening variations in the direction of 56 Galactic GCs. To do that, we use the public catalogues derived as part of the Hubble Space Telescope UV Legacy Survey of Galactic GCs, which include photometry in the F275W, F336W, F438W, F606W, and F814W filters. We corrected photometry for differential reddening and found that for 21 out of 56 GCs the adopted correction procedure significantly improved the CMDs. Moreover, we measure the reddening law in the direction of these clusters, finding that R_V_ exhibits a high level of variability within the Galaxy, ranging from ~2.0 to ~4.0. The updated values of R_V_ have been used to improve the determination of local reddening variations and derive high-resolution reddening maps in the direction of the 21 highly-reddened targets within our sample. To compare the results of the different clusters, we compute the 68^th^ percentile of the differential-reddening distribution, {sigma}_{Delta}AF814W_. This quantity ranges from 0.003 to 0.030mag and exhibits a significant anticorrelation with the absolute module of the Galactic latitude and a strong correlation with the average reddening in the direction of each cluster. Therefore, highly-reddened GCs located in the proximity of the Galactic plane typically show higher differential-reddening variations across their field of view.2023MNRAS.522..367Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/522/367CatalogResearchIsServedByTAP VizieR generic servicerelated-tohttps://archive.stsci.edu/prepds/hugs/#dataaccess : HUGS Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/522/367https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/522/367http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/522/367https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/522/367https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/522/367http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/522/367GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVOpticaldefaultJ/MNRAS/522/367/ngc2298NGC 2298 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc3201NGC 3201 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc5286NGC 5286 differential reddening corrected catalogueF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableJ/MNRAS/522/367/ngc5927NGC 5927 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc5986NGC 5986 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6093NGC 6093 differential reddening corrected catalogueF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableJ/MNRAS/522/367/ngc6121NGC 6121 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6144NGC 6144 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6171NGC 6171 differential reddening corrected catalogueF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6254NGC 6254 differential reddening corrected catalogueIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6304NGC 6304 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6352NGC 6352 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6366NGC 6366 differential reddening corrected catalogueF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableJ/MNRAS/522/367/ngc6388NGC 6388 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6441NGC 6441 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6496NGC 6496 differential reddening corrected catalogueF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6535NGC 6535 differential reddening corrected catalogueF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharJ/MNRAS/522/367/ngc6541NGC 6541 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6656NGC 6656 differential reddening corrected catalogueF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6779NGC 6779 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.IfloatnullableJ/MNRAS/522/367/ngc6838NGC 6838 differential reddening corrected cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID number of the star (from Nardiello et al., 2018MNRAS.481.3382N) (1)meta.id;meta.maincharF275Wc? F275W magnitude corrected for differential reddeningmagphot.mag;em.UV.200-300nmfloatnullableF336Wc? F336W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF438Wc? F438W magnitude corrected for differential reddeningmagphot.mag;em.opt.UfloatnullableF606Wc? F606W magnitude corrected for differential reddeningmagphot.mag;em.opt.RfloatnullableF814Wc? F814W magnitude corrected for differential reddeningmagphot.mag;em.opt.Ifloatnullable