论文标题
随着周期增加的三个完全黯然失色的W UMA星的光度分析：TYC 3700-1384-1，V1511她和V1179她
Photometric analysis of three totally eclipsing W UMa stars with increasing periods: TYC 3700-1384-1, V1511 Her and V1179 Her
论文作者
论文摘要
介绍了她的第一个多色光曲线模型和周期研究，用于完全黯淡的W UMA恒星TYC 3700-1384-1，V1511她和V1179她。这三个恒星均为光谱型F的A型恒星。光曲线溶液表明TYC 3700-1384-1的质量比Q = 0.182 +/- 0.001，并且过度触发的质量比Q = 0.182 +/- 0.001和F = 49％。对于V1179，她的质量比Q = 0.153 +/- 0.001，并且得出了一定程度的F = 48％的过度感染。 V1511 HE的解决方案尚无定论，但是质量比预计在0.13 <Q <0.15之间。将进化状态与零时代的主序列恒星进行了比较，这些序列考虑了从初级成分到二级成分的能量转移。 TYC 3700-1384-1的主要组成部分非常适合主要序列，而V1179她的进化越来越大。该期间的研究揭示了所有三颗恒星的持续增加，以DP/DT的速度= 6.1x10-7 d/yr，DP/DT = 5.0x10-7 d/yr和DP/DT = 9.6x10-7 D/yr Tyc 3700-1384-1，V1511她和V1511的TYC 3700-1384-1，V1511她和V1179。 TYC 3700-1384-1的估计质量转移率为1.6x10-7溶液/年，V1179 HE的估计变化为1.6 x10-7 solmass/yr和1.9x10-7 solmass/yr。
The first multi-colour light curve models and period studies for the totally eclipsing W UMa stars TYC 3700-1384-1, V1511 Her and V1179 Her are presented. All three stars are A-subtype W UMa stars of spectral type F. The light curve solutions show that TYC 3700-1384-1 has a moderately low mass ratio of q = 0.182 +/- 0.001 and a degree of overcontact of f = 49%. For V1179 Her a mass ratio q = 0.153 +/- 0.001 and a degree of overcontact of f = 48% is derived. The solution for V1511 Her is inconclusive, however the mass ratio is expected to be between 0.13 < q < 0.15. The evolutionary status is compared with zero-age main sequence stars taking into account energy transfer from the primary to the secondary component. The primary component of TYC 3700-1384-1 fits well in the main-sequence, while V1179 Her is more evolved. The period study reveals for all three stars a continuously increasing period at a rate of dP/dt = 6.1x10-7 d/yr, dP/dt = 5.0x10-7 d/yr and dP/dt = 9.6x10-7 d/yr for TYC 3700-1384-1, V1511 Her and V1179 Her respectively. The estimated mass transfer rates derived from these period changes are 1.6x10-7 solMass/yr for TYC 3700-1384-1 and 1.9x10-7 solMass/yr for V1179 Her.
