disk star造句
例句與造句
- It is a member of the Local Association, and is most likely a thin disk star.
- This topic was designed to make measurements of the distances to disk stars as well as their proper motions.
- Measurements of thin disk stars yield an estimate that the thin disk formed 8.8 ?1.7 billion years ago.
- Additionally, recent observations have revealed that the average stellar age of thick disk stars quickly decreases as one moves from the inner to the outer disk.
- Ross 128 is an old disk star, which means it has a low abundance of elements other than hydrogen and helium, what astronomers term the star's metallicity, and it orbits near the plane of the Milky Way galaxy.
- It's difficult to find disk star in a sentence. 用disk star造句挺難的
- This indicates that it the star is a member of an older, higher-motion stellar population, which is confirmed by the star's position on the Toomre diagram with Nu 2 Lupi showing kinematics of a thick disk star.
- This star has a stellar classification of G9 III, which indicates it is an evolved K . Based upon its motion through space, there is a 66 % chance of being a member of the Hercules stream and a 27 % chance it is a thin disk star.
- This means that Nu 2 Lupi must be considerably older than the Sun, which is supported by its spectroscopic parameters : the depth of the star's iron spectral lines implies an iron abundance of-0.34 ?0.01 dex, equalling 46 ?1 % of the solar iron abundance-a typical value for a thick disk star.