It is therefore not likely that the object is a background galaxy. Assuming the object is a star cluster in the disc of M 51, we estimate an age and mass of Gyr and , respectively (with the extinction fixed to ). Considering the large size of the object, we argue that in ...
The right panel shows that independent of host galaxy mass, the NSC is nearly always the brightest cluster in the galaxy, often by a wide margin. This result is remarkable, given that both populations have very similar effective radii (e.g., Böker et al. 2004, see also Sect. 5.1). ...
As a result of Baade’s pioneering work on other galaxies in theLocal Group(the cluster ofstarsystems to which the Milky Way Galaxy belongs), astronomers immediately applied the notion of two stellar populations to the Galaxy. It is possible to segregate various components of the Galaxy into th...
et al. The distance and dynamical history of the virgo cluster ultradiffuse galaxy vcc 615. Astrophys. J. 924, 87 (2022). Article ADS Google Scholar Toloba, E. et al. The Next Generation Virgo Cluster Survey (NGVS). XXXV. First kinematical clues of overly-massive dark matter halos ...
Stars within a galaxy, on the other hand, can be a variety of ages and have a variety of compositions, Steffen said. That's why stellar clusters are so important to astronomers who are studying stellar evolution. "If you have a star cluster that's 100 million years old, and then you ...
The image processing steps needed for an image of a star cluster are quite different than they are for a galaxy or nebula. Because the focus is on the stars themselves, less stretching (curves, levels) of the data is needed. Learn the process of removing reflections in your astrophotos in...
You’ll find OΣ 472 one degree almost due east of Beta (β) Lacertae, and you’ll skirt past the very small open cluster NGC 7296 on the way. Here’s our previous chart once again. OΣ 472 (STT 472) HIP: 111058 SAO: 34519 RA: 22h 29.9m Dec: +52° 25’ Magnitudes AB: 6.63...
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The cluster was born only about 100 million years ago (quite recently in terms of the age of our Milky Way Galaxy). As the cluster ages, over hundreds of millions of years, it will slowly lose its stars — some reaching the end of their lives and dying, others drifting away from the...
This short sequence zooms in on the open young cluster of stars, Trumpler 14. One of the largest gatherings of hot, massive and bright stars in the Milky Way, this cluster houses some of the most luminous stars in our entire galaxy....