- brightness fluctuation
- brightness fluctuation Helligkeitsschwankung f
English-German dictionary of Electrical Engineering and Electronics. 2013.
English-German dictionary of Electrical Engineering and Electronics. 2013.
Surface brightness fluctuation — (SBF) is a secondary distance indicator used to estimate distances to galaxies. The technique uses the fact that galaxies are made up of a finite number of stars. The number of stars in any small patch of the galaxy will vary from point to point … 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
Extragalactic distance scale — The extragalactic distance scale is a series of techniques used today by astronomers to determine the distance of cosmological bodies (beyond our own galaxy) not easily obtained with traditional methods. Some procedures utilize properties of… … Wikipedia
Standard candle — A standard candle is an astronomical object that has a known luminosity. Standard candles are the basis for several important methods of deriving distances in extragalactic astronomy and cosmology in the cosmic distance ladder.TheoryComparing its … Wikipedia
Planetary nebula luminosity function — (PNLF) is a secondary distance indicator used in astronomy. It makes use of the [O III| [O III] λ5007 forbidden line found in all planetary nebula which are members of the old stellar populations (Population… … Wikipedia
Chi Cygni — Chi Cygni. How the star would appear at nearly 48 astronomical units. Observation data Epoch J2000 Equinox J2000 … Wikipedia
Haumea (dwarf planet) — Infobox Planet bgcolour = #FFFFC0 name = Haumea caption = Artist s conception of Haumea, with its moons, Hiokinaiaka and Namaka discovery = yes discoverer= Brown et al. ; Ortiz et al. (neither official) discovered=2004 December 28 (Brown et al.… … Wikipedia
NGC 1316 — A Hubble Space Telescope (HST) image of NGC 1316. Observation data (J2000 epoch) Constellation Fornax … Wikipedia
Whirlpool Galaxy — (M51A/B or NGC 5194/5). Credit: NASA/ESA Observation data (J2000 epoch) Constellation … Wikipedia
NGC 5866 — NGC 5866, as observed by the Hubble Space Telescope (HST). Credit: HST/NASA/ESA. Observation data (J2000 epoch) … Wikipedia
Leo Triplet — Not to be confused with Leo Cluster or Leo I Group. Leo Triplet The Leo Triplet, with M65 (right top), M66 (right bottom) and NGC 3628 (left). North is to the left. Observation data (Epoch J2000) … Wikipedia