• Thumbnail for Cepheid variable
    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
  • Thumbnail for Classical Cepheid variable
    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
  • Thumbnail for Hubble's law
    band), and the traditional Cepheid variable stars. The TRGB amd JAGB distances agreed with each other within 1%, while the Cepheid-measured distances are...
    131 KB (13,011 words) - 20:35, 30 October 2024
  • Thumbnail for Delta Scuti variable
    Scuti variable (sometimes termed dwarf cepheid when the V-band amplitude is larger than 0.3 mag.) is a subclass of young pulsating star. These variables as...
    11 KB (877 words) - 03:21, 6 July 2024
  • Thumbnail for Period-luminosity relation
    Period-luminosity relation (category Classical Cepheid variables)
    pulsating variable stars with their pulsation period. The best-known relation is the direct proportionality law holding for Classical Cepheid variables, sometimes...
    20 KB (2,319 words) - 23:57, 4 October 2024
  • Thumbnail for Polaris
    Polaris (category Classical Cepheid variables)
    in the Northern Sky makes it useful for navigation. As the closest Cepheid variable its distance is used as part of the cosmic distance ladder. The revised...
    51 KB (4,965 words) - 04:20, 22 October 2024
  • Thumbnail for Variable star
    numerous observations of variable stars, paying particular attention to Cepheid variables. Her analyses and observations of variable stars, carried out with...
    51 KB (6,578 words) - 02:05, 8 November 2024
  • Thumbnail for Andromeda Galaxy
    Hubble settled the debate in 1925 when he identified extragalactic Cepheid variable stars for the first time on astronomical photos of Andromeda. These...
    110 KB (10,778 words) - 11:54, 8 November 2024
  • rate of pulsation of over a thousand cepheid variable stars in 25 galaxies. Theory suggests that the rate of cepheid pulsation in galaxies screened from...
    18 KB (2,154 words) - 05:22, 6 November 2024
  • Thumbnail for Crux
    Crux (section Variable stars)
    origins and motion across the southern Milky Way. Crux contains four Cepheid variables, each visible to the naked eye under optimum conditions. Crux also...
    45 KB (5,271 words) - 14:48, 23 September 2024