Classical Cepheids are a type of Cepheid variable star. They are young, population I variable stars that exhibit regular radial pulsations with periods...

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...

pulsating variable stars with their pulsation period. The best-known relation is the direct proportionality law holding for Classical Cepheid variables, sometimes...

Population I classical Cepheid variable, although it was once thought to be a type II Cepheid due to its high galactic latitude. Cepheids constitute an...

of the class of Cepheid variables. However, the namesake for classical Cepheids is the star Delta Cephei, discovered to be variable by John Goodricke...

have supergiant luminosity classes, for example α Herculis. Classical Cepheid variables typically have supergiant luminosity classes, although only the...

approximately 272 parsecs (890 light-years). The primary component is a Classical Cepheid variable. The η Aquilae system contains at least two stars, probably three...

Milky Way. He used the strong direct relationship between a classical Cepheid variable's luminosity and pulsation period (discovered in 1908 by Henrietta...

V Centauri (V Cen) is a Classical Cepheid variable, a type of variable star, in the constellation Centaurus. It is approximately 2,350 light-years (720...

and BL Herculis variables, the type II Cepheids. Classical Cepheid variables are higher mass population I stars. RR Lyrae variables are much more common...

W Virginis variables are a subclass of Type II Cepheids which exhibit pulsation periods between 10–20 days, and are of spectral class F6 – K2. They were...

the prototype of the Cepheid variable stars that undergo periodic changes in luminosity. Delta Cephei was discovered to be variable by John Goodricke during...

— in its south, on the left 'leg' of the twin Pollux. It is a classical Cepheid variable star, of which over 800 have been found in our galaxy. As such...

an RV Tauri variable, a semiregular variable star, or a Cepheid variable. S Vulpeculae is now confirmed as a classical Cepheid variable with one of the...

brightest star in the southern constellation of Dorado. It is a Classical Cepheid variable, with an apparent magnitude that varies between 3.46 and 4.08...

V473 Lyrae is a variable star in the constellation Lyra. It is an unusual Classical Cepheid variable with a visual range of 5.99 to 6.35. V473 Lyrae is...

variable stars pulsate in a regular manner with periods related to their luminosity. It is slightly hotter and more luminous than classical Cepheid variable...

Y Carinae (Y Car) is a Classical Cepheid variable, a type of variable star, in the constellation Carina. Its apparent magnitude varies from 7.53 to 8.48...

of classical Cepheid variable stars. The following relation can be used to calculate the distance to Galactic and extragalactic classical Cepheids:  ...

including W Virginis variables, BL Herculis variables and RV Tauri variables. The Classical Cepheids are more luminous than the type II Cepheids with the same...

have been found to have planets. The constellation also contains two cepheid variables visible to the naked eye. Theta Muscae is a triple star system, the...

The variables follow a period-luminosity relation in certain passbands like other standard candles such as Cepheids. and, together with classical cepheids...

naked eye of an observer located far from city lights. It is a classical Cepheid variable star, ranging in brightness from magnitude 5.77 to 5.96 over a...

identified as a member of the benchmark class of stars termed Classical Cepheid variables that satisfy a simple period-luminosity relation. In 1954, R...

Pup) is a Cepheid variable star around 6,000 ly away in the constellation of Puppis. It is one of the biggest and brightest known Cepheids in the Milky...

between spectral types F5Ib and G0p. It is a small amplitude classical Cepheid variable with an apparent magnitude ranges from 5.34 down to 5.58 over...

million years as a main sequence star. l Carinae is classified as a Cepheid variable star and its brightness varies over an amplitude range of 0.725 in...

X Crucis is a classical Cepheid variable star in the southern constellation of Crux. X Crucis is a pulsating variable star with am extremely regular amplitude...

a Classical Cepheid variable, a type of variable star, in the constellation Carina. Its apparent magnitude is 6.86. U Car is a δ Cepheid variable with...

Carinae are distinct and refer to two different stars: W Carinae, a classical Cepheid variable in the constellation Vela that is now called V Velorum w Carinae...