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词汇 Delta Cephei
分类 英语词汇 英语翻译词典
释义

Delta Cephei

中文百科

造父一

仙王座与仙王座δ。
Light curve of Delta Cephei showing magnitude versus pulsation phase

造父一δ Cep / 仙王座δ)是仙王座内距离地球大约891光年的一对联星。它是造父变星的原型,也是这一型变星中最靠近太阳的一颗(另一颗北极星更近)。他在1784年就被约翰·古德利克发现是一颗变星,是继同一年稍早的天鹰座η之后被发现的第二颗造父变星。

英语百科

Delta Cephei 造父一

Light curve of Delta Cephei showing magnitude versus pulsation phase
Hermes Radial Velocity Curve of Delta Cephei A. The offset between points of identical color is due to the spectroscopic companion, Delta Cephei B.
Bow shock around Delta Cephei

Delta Cephei (δ Cep, δ Cephei) is the Bayer designation for a quadruple star system located approximately 887 light-years away in the northern circumpolar constellation of Cepheus, the King. At this distance, the visual magnitude of the star is diminished by 0.23 as a result of extinction caused by gas and dust along the line of sight. It is the prototype of the Cepheid variable stars that undergo periodic changes in luminosity.

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