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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 ...

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 | 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

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

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

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 ...

H-R Diagram

astrosun2.astro.cornell.edu/academics/courses/astro201/hr_diagram.htm

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

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 ...

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 ...

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  ...

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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 ...

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.

H-R Diagram - Las Cumbres Observatory Global Telescope Network

lcogt.net

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.