Photometric Studies of δ Scuti Stars. II. V1162 Orionis
Photometric Studies of δ Scuti Stars. II. V1162 Orionis
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DOI：
10.1086/316176
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发表时间：
1998-06
影响因子：
3.5
通讯作者：
E. Hintz;M. Joner;Chulhee Kim
中科院分区：
文献类型：
--
作者：
E. Hintz;M. Joner;Chulhee Kim
本文报道了V1162猎户座的新的光度(Uvbyβ)观测结果。我们得到了红化值E(b-y)=0.021，金属丰度[Fe/H]=+0.1.本征(b-y)和c1值表示平均有效温度<Tef>=7540K，平均表面重力<logg>=3.96。理论演化轨迹和脉动模型表明，V1162Ori的质量为1.8M⊙，年龄为0.60Gyr。还报道了新的V星等电荷耦合器件的观测结果。最大光照时间分析显示，V1162 ORI经历了一次周期中断。此外，幅度从周期中断前的ΔV=0.2下降到中断后的ΔV=0.1。
New photometric (uvbyβ) observations of V1162 Orionis are reported. We derive a reddening value of E(b - y) = 0.021 mag and a metallicity of [Fe/H] = +0.1. Intrinsic (b - y) and c1 values indicate a mean effective temperature,〈Teff〉 = 7540 K, and a mean surface gravity,〈log g〉 = 3.96. Theoretical evolutionary tracks, along with pulsation models, indicate the mass of V1162 Ori is 1.8 M⊙ and the age is 0.60 Gyr. New V magnitude CCD observations are also reported. A time of maximum light analysis shows that V1162 Ori has experienced a period break. In addition, the amplitude has dropped from ΔV = 0.2 before the period break to ΔV = 0.1 after the break.