SURFACE BRIGHTNESS DISTANCE DETERMINATIONS TO THE LARGE MAGELLANIC CLOUD CEPHEID VARIABLES HV-899 AND HV-2257

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dc.contributor.authorGIEREN, WP
dc.date.accessioned2025-01-23T19:21:37Z
dc.date.available2025-01-23T19:21:37Z
dc.date.issued1993
dc.description.abstractWe present new VRI light curves for the long-period LMC Cepheids HV899 and 2257 and combine these data with the CORAVEL radial velocity curves of Imbert to derive the distances to these variables using the surface brightness method. Assuming metallicities of [Fe/H]=(-0.4 +/- 0.2) for both supergiants, we find metallicity-corrected distances of (65.2 +/- 4.3) kpc for HV899 and (65.7 +/- 4.3) kpc for HV2257, which correspond to true distance moduli of (19.07 +/- 0.15) and (19.09 +/- 0.15) mag, respectively. These distance moduli are about 0.4 mag larger than those predicted for the LMC by the galactic Cepheid calibration of the surface brightness method of Gieren, Barnes & Moffett [which predicts mu0(LMC) approximately 18.65 mag]. While very low metallicities for the Cepheids ([Fe/H]less than or similar to -1.0) might explain this discrepancy, the present results provide evidence of a large distance modulus for the LMC of near 19.0.
dc.fuente.origenWOS
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/98818
dc.identifier.wosidWOS:A1993MC84300021
dc.issue.numero1
dc.language.isoen
dc.pagina.final188
dc.pagina.inicio184
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectSTARS, DISTANCES
dc.subjectSTARS, INDIVIDUAL, HV-899
dc.subjectSTARS, INDIVIDUAL, HV-2257
dc.subjectCEPHEIDS
dc.subjectMAGELLANIC CLOUDS
dc.titleSURFACE BRIGHTNESS DISTANCE DETERMINATIONS TO THE LARGE MAGELLANIC CLOUD CEPHEID VARIABLES HV-899 AND HV-2257
dc.typeartículo
dc.volumen265
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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