Spitzer/IRAC observations of SMC Cepheids

DOI

Using Spitzer observations of classical Cepheids we have measured the true average distance modulus of the Small Magellanic Cloud (SMC) to be 18.96+/-0.01_stat_+/-0.03_sys_mag (corresponding to 62+/-0.3kpc), which is 0.48+/-0.01mag more distant than the LMC. This is in agreement with previous results from Cepheid observations, as well as with measurements from other indicators such as RR Lyrae stars and the tip of the red giant branch. Utilizing the properties of the mid-infrared Leavitt Law we measured precise distances to individual Cepheids in the SMC, and have confirmed that the galaxy is tilted and elongated such that its eastern side is up to 20kpc closer than its western side. This is in agreement with the results from red clump stars and dynamical simulations of the Magellanic Clouds and Stream.

Cone search capability for table J/ApJ/816/49/table2 (Mean-light magnitudes for SMC Cepheids)

Identifier
DOI http://doi.org/10.26093/cds/vizier.18160049
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJ/816/49
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/816/49
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/816/49
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJ/816/49
Provenance
Creator Scowcroft V.; Freedman W.L.; Madore B.F.; Monson A.; Persson S.E.; Rich J.,Seibert M.; Rigby J.R.
Publisher CDS
Publication Year 2016
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