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Hertzsprung–Russell diagram

en.wikipedia.org/wiki/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

www.atnf.csiro.au/outreach/education/senior/astrophysics/stellarevolution_hrintro.html

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 ...

The H-R Diagram - SkyServer - SDSS

skyserver.sdss.org/dr1/en/proj/advanced/hr/

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.

HR Diagram

abyss.uoregon.edu/~js/ast122/lectures/lec11.html

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 Explorer - UNL Astronomy

astro.unl.edu/naap/hr/animations/hrExplorer.html

Size Comparison. a. HR Diagram. Cursor Properties. temperature: K. 5800. 123456789.0eE-+. label and unit. luminosity: L. 1.0. 1.00. 0.001 R. 0.01 R. 0.1 R. 1 R.

H-R Diagram - Las Cumbres Observatory Global Telescope Network

lcogt.net/spacebook/h-r-diagram/

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.

Hertzsprung-Russell Diagram - UNL Astronomy

astro.unl.edu/naap/hr/hr_background3.html

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 ...

The Hertzsprung-Russell Diagram

www.ucolick.org/~bolte/AY4_00/week4/hr_diagram.html

The H-R diagram has played a crucial role in developing our understanding of stellar structure and evolution and you will see this diagram over and over again.

HR Diagram – Student Guide

astro.unl.edu/naap/hr/naap_hr_sg.pdf

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

HR Diagram - Jim Kaler

stars.astro.illinois.edu/sow/hrd.html

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 ...

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Classifying Stars - The Hertzsprung -Russell Diagram

www.atnf.csiro.au

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 ...

H-R Diagram

www.astro.cornell.edu

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

Hertzsprung-Russell Diagram | COSMOS

astronomy.swin.edu.au

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  ...