CT1 photometry for 11 star fields in the SMC

DOI

We present results from Washington CT_1_ photometry for 11 star fields located in the western outskirts of the Small Magellanic Cloud (SMC), which cover angular distances to its centre from 2{deg} up to 13{deg} (~2.2-13.8 kpc). The colour-magnitude diagrams, cleaned from the unavoidable Milky Way (MW) and background galaxy signatures, reveal that the most distant dominant main-sequence (MS) stellar populations from the SMC centre are located at an angular distance of ~5.7{deg} (6.1 kpc); no sign of farther clear SMC MS is visible other than the residuals from the MW/background field contamination. The derived ages and metallicities for the dominant stellar populations of the western SMC periphery show a constant metallicity level ([Fe/H]=-1.0 dex) and an approximately constant age value (~7-8 Gyr). Their age-metallicity relationship (AMR) do not clearly differ from the most comprehensive AMRs derived for almost the entire SMC main body. Finally, the range of ages of the dominant stellar populations in the western SMC periphery confirms that the major stellar mass formation activity at the very early galaxy epoch peaked ~7-8 Gyr ago.

Cone search capability for table J/MNRAS/451/3219/tab2f1 (CT_1_ data of stars in Field 1)

Cone search capability for table J/MNRAS/451/3219/tab2f2 (CT_1_ data of stars in Field 2)

Cone search capability for table J/MNRAS/451/3219/tab2f3 (CT_1_ data of stars in Field 3)

Cone search capability for table J/MNRAS/451/3219/tab2f4 (CT_1_ data of stars in Field 4)

Cone search capability for table J/MNRAS/451/3219/tab2f5 (CT_1_ data of stars in Field 5)

Cone search capability for table J/MNRAS/451/3219/tab2f6 (CT_1_ data of stars in Field 6)

Cone search capability for table J/MNRAS/451/3219/tab2f7 (CT_1_ data of stars in Field 7)

Cone search capability for table J/MNRAS/451/3219/tab2f8 (CT_1_ data of stars in Field 8)

Cone search capability for table J/MNRAS/451/3219/tab2f9 (CT_1_ data of stars in Field 9)

Cone search capability for table J/MNRAS/451/3219/tab2f10 (CT_1_ data of stars in Field 10)

Cone search capability for table J/MNRAS/451/3219/tab2f11 (CT_1_ data of stars in Field 11)

Identifier
DOI http://doi.org/10.26093/cds/vizier.74513219
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/451/3219
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/451/3219
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/451/3219
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/451/3219
Provenance
Creator Piatti A.E.
Publisher CDS
Publication Year 2019
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy