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Hertzsprung–Russell diagram


An HR diagram showing many well known stars in the Milky Way galaxy. HR diagrams for two open clusters, M67 and NGC 188, showing the main-sequence turn-off at different ages. The Hertzsprung–R...

Introduction to the Hertzsprung-Russell Diagram


One of the most useful and powerful plots in astrophysics is the Hertzsprung- Russell diagram (hereafter called the H-R diagram). It originated in 1911 when the ...

HR Diagram


These diagrams, called the Hertzsprung-Russell or HR diagrams, plot luminosity in solar units on the Y axis and stellar temperature on the X axis, as shown ...

Hertzsprung-Russell Diagram | COSMOS

astronomy.swin.edu.au/cosmos/h/hertzsprung-russell diagram

The Hertzsprung-Russell diagram (HR diagram) is one of the most important tools in the study of stellar evolution. Developed independently in the early 1900s  ...

Hertzsprung-Russell Diagram Explorer - UNL Astronomy


Interactives · Video · Mobile · Downloads · Local · More · Contact · Home › NAAP Labs › Hertzsprung-Russell Diagram › Hertzsprung-Russell Diagram Explorer ...

HR Diagram - Jim Kaler


The classical HR diagram, first constructed in 1914 by Henry Norris Russell (to which was added the work of Ejnar Hertzsprung), is a plot of absolute visual ...

H-R Diagram


Hertzsprung-Russell Diagram. The Hertzsprung-Russell Diagram is a graphical tool that astronomers use to classify stars according to their luminosity, spectral ...

The Hertzsprung-Russell Diagram - UNL Astronomy


That was not the case however, for the Hertzsprung-Russell diagram. A significant tool to aid in the understanding of stellar evolution, the H-R diagram was ...

HR Diagram – Student Guide


NAAP – HR Diagram Explorer 2/9. Question 3: The mass luminosity relation. 3.5. L M. ∝ describes the mathematical relationship between luminosity and mass ...

Hertzsprung-Russell Diagram - NAAP - UNL Astronomy


The NAAP HR Diagram Lab explores the Hertzsprung-Russell diagram and those areas necessary to understand the diagram such as (but not limited to) the  ...

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Classifying Stars - The Hertzsprung -Russell Diagram


These can be plotted to form what is one of the most useful plots for stellar astronomy, the Hertzsprung-Russell (or H-R) diagram. It is named after the Danish ...

The H-R Diagram - SkyServer - SDSS


Find stars in the Sloan Digital Sky Survey's database of 13 million objects. Follow in the footsteps of famous astronomers as you learn how stars live and die.

H-R Diagram - Las Cumbres Observatory Global Telescope Network


The most surprising thing about the H-R diagram was that the stars were not randomly scattered on it, but clustered in certain regions and along certain lines.