VINCI/VLTI interferometric observations of Cepheids

被引：0

作者：

Nardetto, N ^{[1
]}

Kervella, P ^{[1
]}

Mourard, D ^{[1
]}

Bersier, D ^{[1
]}

Coudé du Foresto, V ^{[1
]}

机构：

[1] Observ Cote Azur, CNRS, UMR 6528, Dept Fresnel, F-06304 Nice, France

来源：

VARIABLE STARS IN THE LOCAL GROUP | 2004年 / 310卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the angular diameter measurements of seven classical Cepheids, X Sgr, eta Aql, W Sgr, zeta Gem, beta Dor, Y Oph, and l Car, that we have obtained with the VLT Interferometer Commissioning Instrument, installed at ESO's VLT Interferometer. For four of these stars, eta Aql, W Sgr, beta Dor, and l Car, we detect the pulsational variation of their angular diameter. This enables us to compute directly their distances using a modified version of the Baade-Wesselink method. For X Sgr, zeta Gem, and Y Oph, we apply a hybrid method that makes use of published estimates of their linear diameters to derive their distances.

引用

页码：520 / 524

页数：5

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