Improving the cosmic distance ladder. Distance and structure of the Large Magellanic Cloud. Issue 67 (17th July 2015)

• Record Type: Journal Article
• Authors: Muraveva, T.; Clementini, G.; Palmer, M.
• Editors: Walton, N.A.; Figueras, F.; Balaguer-Núñez, L.; Soubiran, C.
• Is Part Of: EAS publications series. Issue 67/68(2014)
• Page Start: 275
• Page End: 278
• Publication Date: 2015-07-17
• Subjects: Astronomy -- Periodicals; 520
• DOI: 10.1051/eas/1567049
• Languages: English
• ISSNs: 1633-4760

Abstract

Abstract : The Large Magellanic Cloud (LMC) is the closest large satellite of the Milky Way (MW) and the first step of the extragalactic distance scale, hence knowing the distance to the LMC and its three-dimensional structure contributes to the definition of the entire cosmic distance ladder. RR Lyrae stars are old objects which trace the halo of the LMC. They can be used as distance indicators because they follow a period-luminosity-metallicity (PLKs Z ) relation in the K s passband. The purpose of this study was the derivation of a new PLKs Z relation for RR Lyrae stars in the LMC based on the multi-epoch K s photometry obtained by the VISTA survey of the Magellanic Clouds system ( VMC, Cioni et al. 2011).