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首页> 外文期刊>The Astrophysical journal >SEPARATED FRINGE PACKET OBSERVATIONS WITH THE CHARA ARRAY. II. ω ANDROMEDA, HD?178911, AND ξ CEPHEI
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SEPARATED FRINGE PACKET OBSERVATIONS WITH THE CHARA ARRAY. II. ω ANDROMEDA, HD?178911, AND ξ CEPHEI

机译:CHARA ARRAY进行的单独条纹包观察。二。 ωANDROMEDA,HD?178911和ξCEPHEI

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When observed with optical long-baseline interferometers, components of a binary star that are sufficiently separated produce their own interferometric fringe packets; these are referred to as separated fringe packet (SFP) binaries. These SFP binaries can overlap in angular separation with the regime of systems resolvable by speckle interferometry at single, large-aperture telescopes and can provide additional measurements for preliminary orbits lacking good phase coverage, help constrain elements of already established orbits, and locate new binaries in the undersampled regime between the bounds of spectroscopic surveys and speckle interferometry. In this process, a visibility calibration star is not needed, and the SFPs can provide an accurate vector separation. In this paper, we apply the SFP approach to ω Andromeda, HD?178911, and ξ Cephei with the CLIMB three-beam combiner at the CHARA Array. For these systems we determine component masses and parallax of 0.963?±?0.049 M ☉ and 0.860?±?0.051 M ☉ and 39.54?±?1.85?mas for ω Andromeda, for HD?178911 of 0.802?±?0.055 M ☉ and 0.622?±?0.053 M ☉ with 28.26?±?1.70?mas, and masses of 1.045?±?0.031 M ☉ and 0.408?±?0.066 M ☉ and 38.10?±?2.81?mas for ξ?Cephei.
机译:当用光学长基线干涉仪观察时,被充分分离的双星的分量会产生自己的干涉条纹数据包;这些被称为分离边缘数据包(SFP)二进制文件。这些SFP双星可以在单个大孔径望远镜上通过散斑干涉法解决的系统方案在角度分离上重叠,并且可以为缺少良好相位覆盖的初步轨道提供额外的测量,帮助约束已经建立的轨道的元素,并在其中定位新的二进制光谱调查和散斑干涉测量法之间的欠采样制度。在此过程中,不需要可见性校准星,并且SFP可以提供准确的矢量分离。在本文中,我们在CHARA阵列上使用CLIMB三光束组合器将SFP方法应用于ωAndromeda,HD?178911和ξCephei。对于这些系统,我们确定ω仙女座的质量和视差为0.963?±?0.049 M☉和0.860?±?0.051 M☉和39.54?±?1.85?mas,HD?178911为0.802?±?0.055 M0.05和。 0.622≤±0.053M☉,质量为28.26±1.07M,质量为1.045≤±0.031M☉,而质量为ξCephei的为0.408≤±0.066M☉和38.10±±2.81M。

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