Local Group — The Local Group is the group of galaxies that includes our galaxy, the Milky Way. The group comprises over 35 galaxies, with its gravitational center located somewhere between the Milky Way and the Andromeda Galaxy. The galaxies of the Local… … Wikipedia
Cepheid variable — This article is about a class of pulsating stars. For the similarly named constellation, see Cepheus (constellation). Cepheids redirects here. For the fictional species, see Blind Alley . A Cepheid ( /ˈs … Wikipedia
Cosmic distance ladder — * Light green boxes: Technique applicable to star forming galaxies. * Light blue boxes: Technique applicable to Population II galaxies. * Light Purple boxes: Geometric distance technique. * Light Red box: The planetary nebula luminosity function… … Wikipedia
IC 1613 — Observation data (J2000 epoch) Constellation Cetus Right ascension 01h 04m 47.8s[1] … Wikipedia
IC 1613 — Amateuraufnahme der Zwerggalaxie IC1613 IC 1613 (Index Catalogue) ist die Bezeichnung einer irregulären Zwerggalaxie im Sternbild Walfisch. Die Galaxie wurde 1906 vom deutschen Astronomen Max Wolf entdeckt. IC 1613 hat eine scheinbare Helligkeit… … Deutsch Wikipedia
Classical Cepheid variable — Classical Cepheids (also known as Population I Cepheids, Type I Cepheids, or Delta Cephei variables) are a type of Cepheid variable star. They are population I, variable stars that exhibit pulsation periods in the order of a few days to months,… … Wikipedia
