NGC 188
NGC 188은 세페우스자리에 있는 산개성단이다. 1825년에 존 허셜에 의해 발견되었다. 몇백 만 년 동안 우리은하의 중력 상호 작용으로 성간이 멀어지는 대부분의 다른 산개 성단과는 달리, 우리 은하 위에 수평으로 펼쳐져 있고, 오래된 산개 성단 중의 하나이다. 나이는 약 68억 년이다.[1].
각주
- ↑ VandenBerg, D. A.; Stetson, P. B. (2004). “On the Old Open Clusters M67 and NGC 188: Convective Core Overshooting, Color‐Temperature Relations, Distances, and Ages”. 《Publications of the Astronomical Society of the Pacific》 116 (825): 997–1011. Bibcode:2004PASP..116..997V. doi:10.1086/426340.
| 이 글은 성단에 관한 토막글입니다. 여러분의 지식으로 알차게 문서를 완성해 갑시다. |
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