WebApr 3, 2024 · Globular clusters are the fossils of the astronomical world. We know they are very old, having formed shortly after the Big Bang. Furthermore, they must be pretty … WebReceived 2007 September 13; in original form 2007 August 10 ABSTRACT This paper explores the quantitative connection between globular clusters and the “dif-fuse” stellar population of the galaxies they are associated with. Both NGC 1399 and NGC 4486 (M87) are well suited for this kind of analysis due to their large globular cluster popula ...

(PDF) The Accretion of Dwarf Galaxies and Their Globular Cluster ...

Globular clusters are generally composed of hundreds of thousands of low-metal, old stars. The stars found in a globular cluster are similar to those in the bulge of a spiral galaxy but confined to a spheroid in which half the light is emitted within a radius of only a few to a few tens of parsecs. They are free of gas … See more A globular cluster is a spheroidal conglomeration of stars. Globular clusters are bound together by gravity, with a higher concentration of stars towards their centers. They can contain anywhere from tens of thousands to … See more The formation of globular clusters is poorly understood. Globular clusters have traditionally been described as a simple star population … See more Hertzsprung–Russell diagrams (H–R diagrams) of globular clusters allow astronomers to determine many of the properties of their populations of stars. An H–R diagram is a graph of a large sample of stars plotting their absolute magnitude (their See more When a globular cluster comes close to a large mass, such as the core region of a galaxy, it undergoes a tidal interaction. The difference in gravitational strength between the nearer and further parts of the cluster results in an asymmetric, tidal force. A "tidal shock" … See more The first known globular cluster, now called M 22, was discovered in 1665 by Abraham Ihle, a German amateur astronomer. The cluster Omega Centauri, easily visible in the southern sky with the naked eye, was known to ancient astronomers like See more In contrast to open clusters, most globular clusters remain gravitationally bound together for time periods comparable to the lifespans of most of their stars. Strong tidal interactions with other large masses result in the dispersal of some stars, leaving behind "tidal … See more Astronomers are searching for exoplanets of stars in globular star clusters. A search in 2000 for giant planets in the globular cluster See more WebOct 6, 2024 · If viewed with the naked eye, globular clusters look like faint smudges of light against the darkness of space. But a telescope reveals their true form: thousands to … dvd maker for windows 1 64 bit

22.2 Star Clusters - Astronomy 2e OpenStax

WebThe three basic types of clusters astronomers have discovered are globular cluster s, open cluster s, and stellar association s. Their properties are summarized in Table 22.3. As we will see in the next section of this chapter, globular clusters contain only very old stars, whereas open clusters and associations contain young stars. Webstar cluster, either of two general types of stellar assemblages held together by the mutual gravitational attraction of its members, which are physically related through common origin. The two types are open (formerly called … WebApr 3, 2024 · Globular clusters are the fossils of the astronomical world. But the exact details of how these clusters formed is still the subject of active research. dvd maker for win 10