H-R Diagram - Revision history

Conrad: SEO: short lead above the diagram, fuller description in its own section below it

2026-10-13T15:18:45Z

SEO: short lead above the diagram, fuller description in its own section below it

Conrad: SEO: image scales down to fit phone screens (no more sideways scrolling)

2026-10-13T15:17:58Z

SEO: image scales down to fit phone screens (no more sideways scrolling)

Conrad: SEO: title subtitle, description of the diagram, alt text, links to the neighboring tables and the standard it supports

2026-10-13T15:08:24Z

SEO: title subtitle, description of the diagram, alt text, links to the neighboring tables and the standard it supports

Conradrichman: Slightly larger directory link with more space above the table

2026-09-25T13:54:34Z

Slightly larger directory link with more space above the table

Conradrichman: Link back to the reference tables directory

2026-09-25T13:49:31Z

Link back to the reference tables directory

Conradrichman: Created page with "800px"

2025-04-11T16:29:49Z

Created page with "800px"

New page

[[File:H-R Diagram.png|800px]]

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   |desc=H-R Diagram from the NYS Earth and Space Sciences Reference Tables (ESSRT): star luminosity against surface temperature and spectral class, with the main sequence, giants, supergiants and white dwarfs. Supports HS-ESS1-3.
 }}
-The '''H-R Diagram''' (Hertzsprung–Russell diagram) from the ''Reference Tables for Earth and Space Sciences'' (ESSRT) plots the luminosity of stars, in solar units, against their surface temperature in kelvins, with spectral class (O, B, A, F, G, K, M) and color from blue to red along the bottom. It shows where the main sequence, giants, supergiants and white dwarfs fall and places well-known stars on the diagram, including the Sun, Sirius, Polaris, Rigel and Betelgeuse. Diagonal lines mark stellar size from 10<sup>−3</sup> to 10<sup>3</sup> solar radii, labels along the main sequence give stellar lifetimes from 10<sup>7</sup> to 10<sup>11</sup> years, and an arrow at the right shows mass increasing toward the top. This table primarily supports [[HS-ESS1-3]].
+The '''H-R Diagram''' (Hertzsprung–Russell diagram) from the ''Reference Tables for Earth and Space Sciences'' (ESSRT) plots the luminosity of stars against their surface temperature. It primarily supports [[HS-ESS1-3]].
 [[File:H-R Diagram.png|800px|class=img-fluid|alt=H-R Diagram from the Earth and Space Sciences Reference Tables (ESSRT): luminosity of stars plotted against surface temperature and spectral class, showing the main sequence, giants, supergiants and white dwarfs]]

← Older revision		Revision as of 15:17, 13 October 2026
Line 7:		Line 7:
	The '''H-R Diagram''' (Hertzsprung–Russell diagram) from the ''Reference Tables for Earth and Space Sciences'' (ESSRT) plots the luminosity of stars, in solar units, against their surface temperature in kelvins, with spectral class (O, B, A, F, G, K, M) and color from blue to red along the bottom. It shows where the main sequence, giants, supergiants and white dwarfs fall and places well-known stars on the diagram, including the Sun, Sirius, Polaris, Rigel and Betelgeuse. Diagonal lines mark stellar size from 10<sup>−3</sup> to 10<sup>3</sup> solar radii, labels along the main sequence give stellar lifetimes from 10<sup>7</sup> to 10<sup>11</sup> years, and an arrow at the right shows mass increasing toward the top. This table primarily supports [[HS-ESS1-3]].		The '''H-R Diagram''' (Hertzsprung–Russell diagram) from the ''Reference Tables for Earth and Space Sciences'' (ESSRT) plots the luminosity of stars, in solar units, against their surface temperature in kelvins, with spectral class (O, B, A, F, G, K, M) and color from blue to red along the bottom. It shows where the main sequence, giants, supergiants and white dwarfs fall and places well-known stars on the diagram, including the Sun, Sirius, Polaris, Rigel and Betelgeuse. Diagonal lines mark stellar size from 10<sup>−3</sup> to 10<sup>3</sup> solar radii, labels along the main sequence give stellar lifetimes from 10<sup>7</sup> to 10<sup>11</sup> years, and an arrow at the right shows mass increasing toward the top. This table primarily supports [[HS-ESS1-3]].

−	[[File:H-R Diagram.png\|800px\|alt=H-R Diagram from the Earth and Space Sciences Reference Tables (ESSRT): luminosity of stars plotted against surface temperature and spectral class, showing the main sequence, giants, supergiants and white dwarfs]]	+	[[File:H-R Diagram.png\|800px\|class=img-fluid\|alt=H-R Diagram from the Earth and Space Sciences Reference Tables (ESSRT): luminosity of stars plotted against surface temperature and spectral class, showing the main sequence, giants, supergiants and white dwarfs]]

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-{| style="width:100%; table-layout:fixed; margin-top:-1.0em; margin-bottom:1.2em; background-color:rgb(245, 250, 255);"
+{{Reftable
-| style="text-align:left; font-size:1.12em; padding:5px 8px;" | [[Earth and Space Science Reference Tables|⇱ See all reference tables]]
+ |name=H-R Diagram
-|}
+ |prev=Emission Spectra of Some Elements from Stars
-[[File:H-R Diagram.png|800px]]
+ |next=Life Cycles of Stars Model

@@ Line 1: / Line 1: @@
-{| style="width:100%; table-layout:fixed; margin-top:-1.0em; margin-bottom:0.3em; background-color:rgb(245, 250, 255);"
+{| style="width:100%; table-layout:fixed; margin-top:-1.0em; margin-bottom:1.2em; background-color:rgb(245, 250, 255);"
-| style="text-align:left;" | [[Earth and Space Science Reference Tables|⇱ See all reference tables]]
+| style="text-align:left; font-size:1.12em; padding:5px 8px;" | [[Earth and Space Science Reference Tables|⇱ See all reference tables]]
 |}
 [[File:H-R Diagram.png|800px]]

← Older revision		Revision as of 13:49, 25 September 2026
Line 1:		Line 1:
		+	{\| style="width:100%; table-layout:fixed; margin-top:-1.0em; margin-bottom:0.3em; background-color:rgb(245, 250, 255);"
		+	\| style="text-align:left;" \| [[Earth and Space Science Reference Tables\|⇱ See all reference tables]]
		+	\|}
	[[File:H-R Diagram.png\|800px]]		[[File:H-R Diagram.png\|800px]]