Stellar Classifications: Difference between revisions
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m Dan moved page Stellar Classification to Stellar Classifications |
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!style="background:#9bb0ff;"| [[:Image:Type O star.jpg|O]] | !style="background:#9bb0ff;"| [[:Image:Type O star.jpg|O]] | ||
| 30,000–60,000 K | | 30,000–60,000 K | ||
|style="background:# | |style="background:#9bb0ff;"| blue<br>#9bb0ff | ||
|style="background:# | |style="background:#CEF3FF;"| blue | ||
| 60 M | | 60 M | ||
| 15 R | | 15 R | ||
| Line 23: | Line 23: | ||
| ~0.00003% | | ~0.00003% | ||
|- style="background:#aabfff;" | |- style="background:#aabfff;" | ||
!style="background:# | !style="background:#aabfff;"| [[:Image:Type B star.jpg|B]] | ||
| 10,000–30,000 K | | 10,000–30,000 K | ||
|style="background:# | |style="background:#aabfff;"| blue white<br>#aabfff | ||
|style="background:# | |style="background:#D5FFFF;"| blue white to white | ||
| 18 M | | 18 M | ||
| 7 R | | 7 R | ||
| Line 34: | Line 34: | ||
!style="background:#cad7ff;"| [[:Image:Type A star.jpg|A]] | !style="background:#cad7ff;"| [[:Image:Type A star.jpg|A]] | ||
| 7,500–10,000 K | | 7,500–10,000 K | ||
|style="background:#f8f7ff;"| white | |style="background:#f8f7ff;"| white<br>#cad7ff | ||
|style="background:# | |style="background:#FDFDFE;"| white | ||
| 3.1 M | | 3.1 M | ||
| 2.1 R | | 2.1 R | ||
| Line 43: | Line 43: | ||
!style="background:#f8f7ff;"| [[:Image:Type F star.gif|F]] | !style="background:#f8f7ff;"| [[:Image:Type F star.gif|F]] | ||
| 6,000–7,500 K | | 6,000–7,500 K | ||
|style="background:#fff4ea;"| yellowish white | |style="background:#fff4ea;"| yellowish white<br>#f8f7ff | ||
|style="background:# | |style="background:#FFFFF2;"| white | ||
| 1.7 M | | 1.7 M | ||
| 1.3 R | | 1.3 R | ||
| Line 52: | Line 52: | ||
!style="background:#fff4ea;"| [[:Image:Type G star.jpg|G]] | !style="background:#fff4ea;"| [[:Image:Type G star.jpg|G]] | ||
| 5,000–6,000 K | | 5,000–6,000 K | ||
|style="background:#fff2a1;"| yellow | |style="background:#fff2a1;"| yellow<br>#fff4ea | ||
|style="background:# | |style="background:#FFFFC2;"| yellow | ||
| 1.1 M | | 1.1 M | ||
| 1.1 R | | 1.1 R | ||
| Line 61: | Line 61: | ||
!style="background:#ffd2a1;"| [[:Image:Type K star.gif|K]] | !style="background:#ffd2a1;"| [[:Image:Type K star.gif|K]] | ||
| 3,500–5,000 K | | 3,500–5,000 K | ||
|style="background:#ffc46f;"| orange | |style="background:#ffc46f;"| orange<br>#ffd2a1 | ||
|style="background:# | |style="background:#FFC671;"| yellow orange | ||
| 0.8 M | | 0.8 M | ||
| 0.9 R | | 0.9 R | ||
| Line 70: | Line 70: | ||
!style="background:#ffcc6f;"| [[:Image:Type M star.jpg|M]] | !style="background:#ffcc6f;"| [[:Image:Type M star.jpg|M]] | ||
| 2,000–3,500 K | | 2,000–3,500 K | ||
|style="background:#ff6060;"| red | |style="background:#ff6060;"| red<br>#ffcc6f | ||
|style="background:# | |style="background:#FD6949;"| orange red | ||
| 0.3 M | | 0.3 M | ||
| 0.4 R | | 0.4 R | ||
Revision as of 18:16, 2 July 2024
Stars
- see also: Gallery of Single Stars
| Type | Temperature | Conventional color | Apparent color | Mass (solar masses) |
Radius (solar radii) |
Luminosity | % of all Main Sequence Stars |
|---|---|---|---|---|---|---|---|
| O | 30,000–60,000 K | blue #9bb0ff |
blue | 60 M | 15 R | 1,400,000 L | ~0.00003% |
| B | 10,000–30,000 K | blue white #aabfff |
blue white to white | 18 M | 7 R | 20,000 L | 0.13% |
| A | 7,500–10,000 K | white #cad7ff |
white | 3.1 M | 2.1 R | 80 L | 0.6% |
| F | 6,000–7,500 K | yellowish white #f8f7ff |
white | 1.7 M | 1.3 R | 6 L | 3% |
| G | 5,000–6,000 K | yellow #fff4ea |
yellow | 1.1 M | 1.1 R | 1.2 L | 8% |
| K | 3,500–5,000 K | orange #ffd2a1 |
yellow orange | 0.8 M | 0.9 R | 0.4 L | 13% |
| M | 2,000–3,500 K | red #ffcc6f |
orange red | 0.3 M | 0.4 R | 0.04 L | >78% |
The Roman numeral following the Class indicates the size of the star (not presently used here in SFC):
- I - super giant
- II - bright giant
- III - giant
- IV - sub-giant
- V - main sequence
- VI - sub-dwarf
- VII - white dwarf
- VIII - brown
Other Astronomical Objects
These objects are not necessary (or still) stars, nor necessarily natural:
- C - Red/IR star: a star with wavelengths unusually bright in the near-infrared; the strong stellar wind condenses as it cools away from the star, forming molecules such as water (H2O) which can then be pumped to produce dangerous (to shielded ships) maser emissions.
- D - White Dwarf
- NMC/D/E - Nebula (Planetary/Small/Large)
- NMF - Protostar
- P - Neutron Star
- R - Rogue planet (this may be either a terrestrial planet or gas giant)
- S - Infrared star: a star with wavelengths unusually bright in the infrared spectrum, with a powerful magnetic field and emissions of gamma rays.
- T - Station (undesignated)
- U - Unknown (detected but unidentified)
- X - X-ray star; also known as a magnetar, a type of neutron star with an extremely powerful magnetic field and emissions of X-rays and gamma rays.
- Z - Black Hole