Subject |
has spectral type |
is part of |
has surface temperature |
has orbital period |
is an instance of |
has optical brightness variation |
has observational problem |
has color |
has distance |
has absorption line |
has abundance |
has primary |
is a kind of |
has name designated with |
has observable variation time scale |
has definition |
has number of star |
eclipsing binary | | | greater than 1000 Kelvin | | | 0.2 magnitudes or greater | some difficulty in distinguishing between various kinds | | | | half the stars in the solar neighborhood are members of star systems | | close binary | - R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name
- RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted
- AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted
- V 335, V 336, etc., when the double letter designations are exhausted
| within a period of decades | Eclipsing variables whose orbital plane lies so nearly in the line of sight that eclipses, as seen from the Earth, can occur and can be detected from their light curves. | 2 |
white supergiant | O, B, A, and early F | | 10000 K | | | | | white | | H I | | | A star | | | A supergiant star with a spectral type of A. White supergiants are rare; the nearest is Deneb, which lies 1500 light-years away. | |
epsilon Aurigae | O, B, A, and early F | Auriga | 10000 K | 27 years | eclipsing binary | 0.2 magnitudes or greater | some difficulty in distinguishing between various kinds | white | 1 kpc | H I | half the stars in the solar neighborhood are members of star systems | A8 Ia | | - R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name
- RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted
- AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted
- V 335, V 336, etc., when the double letter designations are exhausted
| within a period of decades | An eclipsing binary with an invisible supergiant companion. The primary is an extremely luminous A8 Ia supergiant of 30 Msun in a post-main-sequence stage of evolution; the secondary may be a collapsed star or black hole. It has at least six components. | 2 |