Far-ultraviolet Surveys of Globular Clusters: Hunting for the Products of Stellar Collisions and near Misses *
نویسنده
چکیده
Globular clusters are gravitationally bound stellar systems containing on the order of 10 stars. Due to the high stellar densities in the cores of these cluster, close encounters and even physical collisions between stars are inevitable. These dynamical interactions can produce exotic types of single and binary stars that are extremely rare in the galactic field, but which may be important to the dynamical evolution of their host clusters. A common feature of these dynamically-formed stellar populations is that many of their members are relatively hot, and thus bright in the far-ultraviolet (FUV) waveband. In this short review, I describe how space-based FUV observations are being used to find and study these populations.
منابع مشابه
Far-ultraviolet Surveys of Globular Clusters: Searching for the Products of Stellar Collisions and near Misses
Far-ultraviolet (FUV) observations with the Hubble Space Telescope are an excellent way to find and study the hot, blue stellar populations in the cores of globular clusters. These populations include dynamicallyformed blue stragglers and interacting binaries (such as cataclysmic variables), i.e. the products of stellar collisions and near misses. Using the cluster 47 Tuc as an example, we show...
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