why are globular clusters uniquely useful in determining the size of the galaxy they are evenly distributed around the center in order for a variable star to be useful as a standard candle, its luminosity must be related to its
The cluster of stars, known as Liller 1, is a difficult target to study due to its distance and also because it is located close to the centre of the Milky Way (about 3,200 light-years away from it), where the obscuration by dust is very high. The Milky Way is the galaxy that contains our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.The term Milky Way is a translation of the Latin via lactea, from the Greek γαλαξίας κύκλος (galaxías kýklos, "milky circle"). As a result, these objects populate a roughly spherical halo in our galaxy today. Recent observations of stellar globular clusters in the Milky Way Galaxy, combined with revised ranges of parameters in stellar evolution codes and new estimates of the earliest epoch of globular cluster formation, result in a 95% confidence level lower limit on the age of the Universe of 11.2 billion years.
Globular clusters are important because. Detailed observations of the structure of the Milky Way are difficult because: The solar system is embedded in the dust and gas of the disk. In 1917, Harlow Shapley used the globular clusters in the Milky Way to gain a better understanding of the Milky Way Galaxy. This sequence of events is … all of the above. View photos Image of the disk and halo of the Milky Way by COBE in infrared. By focusing on how the Milky Way affects its neighboring globular clusters, dense groups of stars smaller than a galaxy, scientists were able to calculate the mass of the Milky Way … Spatial distribution of the Milky Way globular clusters (dots) more distant than 20 kpc from the Galactic center, and dwarf satellite galaxies (crosses).
all of the above. All the globular clusters are very far from the Sun, and some are found at distances of 60,000 light-years or more from the main disk of the Milky Way. forces, due to the Milky Way, and calculate their re-laxation time.
Globular clusters contain a tiny fraction of all Milky Way stars, but astronomers suspect that they hold important clues to the early stages of how the galaxy formed. The unprecedented ultra-sharp view of the cluster reveals a vast city of stars estimated by the team to contain a total mass of at least 1.5 million suns, very similar to the most … Globular clusters contain a tiny fraction of all Milky Way stars, but astronomers suspect that they hold important clues to the early stages of how the galaxy formed. Our galaxy contains more than 100 such clusters scattered throughout its halo. become part of the Milky Way. Is quite flat at great distances from the center. Herschel's Milky Way: More sophisticated counting techniques yielded similar results including a careful model by Kapteyn in 1922. Such clusters contain thousands of stars …
“Time seems to leave its marks, however, on the clusters along the Milky Way. Furthermore, most of the outer globular clusters also appear to lie in this same great plane. Halo stars are found in the vicinity of the Sun. Shapley observed a number of globular clusters and discovered that the center of the Milky Way …
Globular clusters can be found through-out the galactic halo of our galaxy; so they can be distinguished into two categories: bulge/disk clusters and halo clusters. They are spherical clusters of typically about 105 stars and approxi-mately 10 light years across. This suggests that these GCs were once associated with the DSGs and have been accreted by the Milky Way, along with the dwarf satellite galaxies that they origi-nally belonged to.