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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 ...

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  ...

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 - NAAP - UNL Astronomy

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

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  ...

The H-R Diagram - Introduction - SkyServer - SDSS

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

To make an H-R diagram, you must look at many stars. But for each star, you need to measure only two quantities: luminosity and temperature. You can't directly ...

Hertzsprung-Russell Diagram Explorer - UNL Astronomy

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

Interactive HR diagram - lcogt

lcogt.net/files/flash/hr-diagram/main.html

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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.

The 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 ...

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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 ...

The H-R Diagram - SkyServer - SDSS

skyserver.sdss.org

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.