 | The Hertzsprung–Russell diagram (abbreviated as H–R diagram, HR diagram or HRD) is a scatter plot of stars showing the relationship between the stars'... 23 KB (2,771 words) - 20:37, 11 May 2024 |
 | Hertzsprung, developed the Hertzsprung–Russell diagram (1910). In 1923, working with Frederick Saunders, he developed Russell–Saunders coupling, which is... 13 KB (1,027 words) - 11:50, 23 March 2024 |
 | Globular cluster (section Hertzsprung–Russell diagrams) supermassive black holes and their surrounding galaxies. Hertzsprung–Russell diagrams (H–R diagrams) of globular clusters allow astronomers to determine many... 105 KB (11,846 words) - 13:26, 27 April 2024 |
| Color-magnitude plots are known as Hertzsprung–Russell diagrams after Ejnar Hertzsprung and Henry Norris Russell. After condensation and ignition of... 60 KB (6,813 words) - 07:50, 7 April 2024 |
 | Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 37 KB (5,067 words) - 17:09, 9 May 2024 |
 | In 1911 Hertzsprung developed the Hertzsprung–Russell diagram, independently developed in 1913 by Henry Norris Russell. In 1913 Hertzsprung determined... 7 KB (619 words) - 14:48, 29 April 2024 |
| The Hertzsprung gap is a feature of the Hertzsprung–Russell diagram for a star cluster. This diagram is a plot of effective temperature versus luminosity... 3 KB (352 words) - 02:55, 6 January 2024 |
| Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 39 KB (4,448 words) - 17:44, 11 May 2024 |
 | clusters, HB stars lie along a roughly horizontal line in a Hertzsprung–Russell diagram. Because the stars of one globular cluster are all at essentially... 14 KB (1,722 words) - 16:03, 7 September 2023 |
 | star will sit at a specific point on the main sequence of the Hertzsprung–Russell diagram, with the main-sequence spectral type depending upon the mass... 49 KB (6,424 words) - 20:50, 5 March 2024 |
| Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 11 KB (1,543 words) - 20:53, 2 September 2023 |
| Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 26 KB (3,361 words) - 11:58, 24 April 2024 |
| Subgiant (section Subgiants in the H–R diagram) Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 29 KB (3,699 words) - 23:28, 24 March 2024 |
 | and laboratories. Around 1920, following the discovery of the Hertzsprung–Russell diagram still used as the basis for classifying stars and their evolution... 30 KB (3,291 words) - 15:52, 7 May 2024 |
 | Hertzsprung–Russell diagram for stars, galaxy properties are not necessarily completely determined by their location on the color–magnitude diagram.... 5 KB (586 words) - 17:40, 19 February 2024 |
| The red clump is a clustering of red giants in the Hertzsprung–Russell diagram at around 5,000 K and absolute magnitude (MV) +0.5, slightly hotter than... 13 KB (1,655 words) - 05:01, 5 February 2024 |
such, color-color diagrams can be used as a means of representing the stellar population, much like a Hertzsprung–Russell diagram, and stars of different... 16 KB (1,953 words) - 12:38, 25 September 2023 |
| Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 16 KB (1,932 words) - 01:19, 11 March 2024 |
 | during the first decades of the twentieth century. In 1913, the Hertzsprung-Russell diagram was developed, propelling the astrophysical study of stars. Successful... 146 KB (16,321 words) - 04:24, 9 May 2024 |
 | optically visible, and appears on the stellar birthline in the Hertzsprung-Russell diagram. At this point, the star has acquired nearly all of its mass... 4 KB (481 words) - 21:34, 25 September 2023 |
| Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 18 KB (2,128 words) - 05:59, 29 April 2024 |
| Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 33 KB (4,223 words) - 15:57, 8 May 2024 |
 | Objects in that spectral range can be difficult to categorize. Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red... 36 KB (4,242 words) - 21:49, 3 May 2024 |
main sequence, or ZAMS, a main sequence stage in astronomy's Hertzsprung–Russell diagram 0 allomorph, also null allomorph, a special kind of allomorph... 849 bytes (153 words) - 08:16, 7 October 2023 |
| Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 16 KB (2,321 words) - 14:49, 20 April 2024 |
 | The turnoff point for a star refers to the point on the Hertzsprung–Russell diagram where it leaves the main sequence after its main fuel is exhausted –... 2 KB (249 words) - 22:16, 10 December 2023 |
 | Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red... 12 KB (1,296 words) - 01:40, 1 May 2024 |
Glossary of astronomy (redirect from O–C diagram) closed orbit of any radius. evolutionary track A curve on the Hertzsprung–Russell diagram that a solitary star of a particular mass and composition is... 160 KB (18,369 words) - 05:03, 12 May 2024 |
nuclear fusion. A Hertzsprung-Russell diagram displays a plot of a star's surface temperature against the luminosity. On this diagram, the Hayashi limit... 9 KB (1,423 words) - 07:26, 11 May 2024 |
| The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars. This is a period of stellar... 25 KB (3,047 words) - 14:59, 14 February 2024 |