ob association造句

• The brightest component is a spectroscopic binary with an orbital period of 56.71 days and an OB association, the nearest such co-moving association of massive stars to the Sun.
• The neighbourhood of the sun is in the disk of the Milky Way which is still forming stars, hence we might expect some early-type stars ( typically forming OB associations ).
• Within this HII region is the open cluster NGC 6604, which is the same age as the surrounding OB association, and the cluster is now thought to simply be the densest part of it.
• Delta Crucis is a member of the Lower Centaurus Crux ( LCC ) component of the Scorpius-Centaurus Association, which is an OB association of massive stars that share a common origin and motion through space.
• A recent dynamical study points to Zeta Puppis originating in the Trumpler 10 OB association at around 300pc, but this is also a much older cluster and physical models still lead to a distance of 450-600pc.
• "' 19 Cephei "'is a supergiant star in the northern circumpolar constellation of spectral class of O9 and is a member of Cep OB2, an OB association of massive stars located about from the Sun.
• "' Cygnus OB7 "'is an OB association in the Milky Way Galaxy in the Cygnus molecular cloud complex, which also contains the star-forming regions Cygnus X, the North America Nebula, and the Pelican Nebula.
• "' HD 115600 "'is a star in the constellation Centaurus and a member of the Scorpius Centaurus Association, the nearest OB association to the Sun and the host star of a bright Kuiper belt-like debris ring.
• It has been used to make the best measurements to date of the corotation radii of the density wave systems related to galaxy bars, and to explore the initial phases of the huge superbubbles caused by the combined stellar winds and supernovae of the OB associations of massive young stars, among a variety of its observing achievements.