ASAS-SN Variable Stars Atlas
When using ASAS-SN light curves in publications cite: Shappee et al. (2014) and either: (i) The ASAS-SN Catalog of Variable Stars I: Jayasinghe et al. (2018a) or (ii) The ASAS-SN Catalog of Variable Stars II: Jayasinghe et al. (2018b) , (iii) The ASAS-SN Catalog of Variable Stars III: Jayasinghe et al. (2019b) , (iv) The ASAS-SN Catalog of Variable Stars V: Jayasinghe et al. (2020) , or (v) The ASAS-SN Catalog of Variable Stars IX: Jayasinghe et al. (2021).
It is often enough to understand the visual morphology of light curves of a given subclass. However, understanding how other variables relate to one another can offer just as much insight. Visualizations are a powerful tool in any learning environment; in the ASAS-SN Variable Star Atlas, we provide additional materials below in the form of helpful visuals.
Similar to a Hertzsprung–Russell diagram, a color-magnitude diagram (CMD) shows the relationship between magnitude (brightness) and color (temperature) for a given stellar population. In stellar astronomy, it is often helpful to see where a star lies on a color-magnitude diagram to understand where they are at in their evolution. In this diagram various types of variable stars occupy different regions in the CMD.
Many types of stellar variability are governed by a distinct period-luminosity relationship, and this is best seen in a period-luminosity plot. This plot illustrates how the brightness (luminosity) of different variable groups change with their period.
Variable Star Map
The sky map illustrates how different types of variable stars are distributed in the Milky Way galaxy.