Catalogue of Variable Stars does not define a long-period variable star type, although it does describe Mira variables as long-period variables. The term...
9 KB (1,014 words) - 23:14, 16 July 2024
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes systematically with time. This variation may be caused...
51 KB (6,578 words) - 02:05, 8 November 2024
In astronomy, a semiregular variable star, a type of variable star, is a giant or supergiant of intermediate and late (cooler) spectral type showing considerable...
11 KB (894 words) - 02:47, 2 September 2024
A Cepheid variable (/ˈsɛfi.ɪd, ˈsiːfi-/) is a type of variable star that pulsates radially, varying in both diameter and temperature. It changes in brightness...
38 KB (4,299 words) - 06:07, 13 October 2024
In astronomy, cataclysmic variable stars (CVs) are stars which irregularly increase in brightness by a large factor, then drop back down to a quiescent...
12 KB (1,009 words) - 16:31, 6 October 2024
Mira variables /ˈmaɪrə/ (named for the prototype star Mira) are a class of pulsating stars characterized by very red colours, pulsation periods longer than...
24 KB (1,621 words) - 10:51, 29 July 2024
astronomy, a period-luminosity relation is a relationship linking the luminosity of pulsating variable stars with their pulsation period. The best-known...
20 KB (2,319 words) - 23:57, 4 October 2024
Sonneberg 9484). Named after Cuno Hoffmeister. Honda's Variable Star is a long-period variable star (not a nova) in Cygnus The Hulse–Taylor binary is PSR...
41 KB (4,758 words) - 08:54, 3 November 2024
V Coronae Borealis (category Objects with variable star designations)
Mira-type long period variable star and carbon star in the constellation Corona Borealis. Its apparent magnitude varies between 6.9 and 12.6 over a period of...
4 KB (327 words) - 04:15, 18 November 2024
The prototype of these variable stars, Beta Cephei, shows variation in apparent magnitude from +3.16 to +3.27 with a period of 4.57 hours. The point...
27 KB (1,961 words) - 14:46, 17 July 2024
S Ursae Minoris (category Objects with variable star designations)
Minoris (S UMi) is a long period variable star in the constellation Ursa Minor, ranging from magnitude 7.5 to fainter than 13.2 over a period of 331 days. "Download...
2 KB (124 words) - 11:51, 14 May 2023
A flare star is a variable star that can undergo unpredictable dramatic increases in brightness for a few minutes. It is believed that the flares on flare...
15 KB (1,815 words) - 02:00, 22 October 2024
Algol (redirect from Demon Star)
Star, is a bright multiple star in the constellation of Perseus and one of the first non-nova variable stars to be discovered. Algol is a three-star system...
33 KB (3,241 words) - 10:22, 26 October 2024
star, with particularly strong spectral lines of certain metals. Castor C is a variable star, classified as a BY Draconis type. BY Draconis variables...
24 KB (1,754 words) - 15:59, 26 October 2024
Symbiotic binary (redirect from Symbiotic variable star)
nebulosity and the star itself is not directly visible. D-type systems tend to contain a Mira variable or other long period variable star. Some symbiotic...
7 KB (899 words) - 23:48, 25 July 2024
the star, then its presence can be deduced. From precise astrometric measurements of the movement of the visible star over a sufficiently long period of...
68 KB (8,192 words) - 10:32, 17 November 2024
by the revolution period of the binary, the time it takes for the two components to once orbit around each other. Most Algol variables are quite close binaries...
9 KB (686 words) - 01:06, 3 September 2024
An Alpha2 Canum Venaticorum variable (or α2 CVn variable) is a type of variable star. These stars are chemically peculiar main sequence stars of spectral...
4 KB (320 words) - 23:47, 12 January 2024
Pulsating white dwarf (redirect from ZZ Ceti variable)
The reason for this period being longer than predicted is that the variability of HL Tau 76, like that of the other pulsating variable white dwarfs known...
18 KB (1,988 words) - 06:32, 27 January 2024
a term relating to tribology (the study of friction and wear) Long-period variable star, astronomy Low-pressure valve, plumbing Linear parameter varying...
2 KB (305 words) - 05:35, 22 October 2024
Gliese 65 (redirect from UV Ceti Star System)
component stars are both flare stars with the variable star designations BL Ceti and UV Ceti. The star system was discovered in 1948 by Willem Jacob Luyten...
16 KB (1,327 words) - 17:00, 27 September 2024
Classical Cepheids are a type of Cepheid variable star. They are young, population I variable stars that exhibit regular radial pulsations with periods...
40 KB (3,954 words) - 18:44, 9 September 2024
Polaris (redirect from North Star)
Polaris ternary system. The variable radial velocity of Polaris A was reported by W. W. Campbell in 1899, which suggested this star is a binary system. Since...
51 KB (5,002 words) - 16:50, 16 November 2024
Dwarf nova (redirect from Z Camelopardalis variable star)
(pl. novae), or U Geminorum variable, is one of several types of cataclysmic variable star, consisting of a close binary star system in which one of the...
7 KB (701 words) - 08:11, 15 September 2024
TX Camelopardalis (category Objects with variable star designations)
is a Mira-type variable star in the constellation Camelopardalis. It is a classical long period variable star with pulsational period of 558.7 days. Water...
5 KB (387 words) - 03:41, 17 July 2024
Spica (redirect from Star Spica)
light-years from the Sun. It is a spectroscopic binary star and rotating ellipsoidal variable; a system whose two stars are so close together they are...
26 KB (2,447 words) - 03:44, 15 November 2024
LHA 120-S 79 (category RV Tauri variables)
Tauri variable star located in the Large Magellanic Cloud, located about 163,000 light years away in the constellation of Dorado, with a period of 37...
4 KB (376 words) - 02:48, 3 October 2024
Mira (redirect from Mira (star))
degrees Celsius). As with other long-period variables, Mira's deep red color at minimum pales to a lighter orange as the star brightens. Within the next few...
29 KB (3,143 words) - 00:21, 29 July 2024
U Orionis (category Objects with variable star designations)
(abbreviated U Ori) is a Mira-type variable star in the constellation Orion. It is a classical long period variable star that has been well observed for...
7 KB (594 words) - 10:13, 8 November 2023
the Sun. It is a variable star of the BY Draconis type with the identifier VZ Pictoris. This means that the luminosity of the star changes because of...
26 KB (2,412 words) - 18:33, 9 November 2024