38 color-magnitude diagram
31.01.2022 · Color–magnitude diagram of stars located within 2 0 × 2 0 of the microlensing event OGLE-2016-BLG-1928. stars are reddened by the same amount. Because the Gaia proper motion of the source relative to the mean proper motion of red clump stars is only 0.18 mas yr −1 (Gaia Collaboration et al. 2018) (Figure 4), the source is likely located in the Galactic bulge and … Hubble's scheme divided regular galaxies into three broad classes – ellipticals, lenticulars and spirals – based on their visual appearance (originally on photographic plates).A fourth class contains galaxies with an irregular appearance. The Hubble sequence is the most commonly used system for classifying galaxies, both in professional astronomical research and in …
Components of the galactic halo Stellar halo. The stellar halo is a nearly spherical population of field stars and globular clusters.It surrounds most disk galaxies as well as some elliptical galaxies of type cD.A low amount (about one percent) of a galaxy's stellar mass resides in the stellar halo, meaning its luminosity is much lower than other components of the galaxy.
Color-magnitude diagram
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