Galaxies

Some articles on galaxies:

Cosmic Infrared Background - History
... derive the value of the visual background due to galaxies, at that time based on the integrated starlight of these stellar systems ... microwave background - that can account for the formation and evolution of stars and galaxies ... In order to produce today's metallicity, early galaxies must have been significantly more powerful than they are today ...
Sersic Profile - Generalizations of The Sérsic Profile
... The brightest elliptical galaxies often have low-density cores that are not well described by Sérsic's law ... Graham in 2005 to describe such galaxies ... Dwarf elliptical galaxies sometimes have pointlike nuclei that are also not well described by Sérsic's law ...
Martha P. Haynes - ALFALFA
... Wavelength 21 cm Data sources Arecibo Observatory Goals finding 25,000 galaxies, discovering dark galaxies Website ALFALFA Page The ALFALFA research project is located ... The goal is to find up to 25,000 galaxies in the course of 6–7 years ... Some of the detected objects should be dark galaxies, consisting largely of dark matter and in this case hydrogen gas, but no or very few stars ...
List Of Galaxies Named After People
... A small number of galaxies or galaxy groups have been named after individual people ... Many of the brighter galaxies visible from the Northern Hemisphere have Messier numbers, named after Charles Messier ... There are a few other comprehensive catalogs that assign the cataloguer's name to galaxies ...
Lyon-Meudon Extragalactic Database
... Database (LEDA) was a database of galaxies, created in 1983 at the Lyon Observatory, which was merged with Hypercat to become HyperLeda in 2000 ... It originally contained information on more than 60 parameters for about 100,000 galaxies, and now contains information on over 3 million celestial objects, of which about 1.5 million are ...

Famous quotes containing the word galaxies:

    Don’t you see what’s at stake here? The ultimate aim of all science—to penetrate the unknown. Do you realize we know less about the earth we live on than about the stars and the galaxies of outer space? The greatest mystery is right here, right under our feet.
    Walter Reisch (1903–1963)