In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... The history of star formation was successfully analyzed for the first time based on the spectra of the stellar population of dwarf galaxies of low surface brightness outside the Local Group. We have investigated the stellar population of two dwarf spheroidal galaxies KDG61 and KDG64 in the central part of a close group of galaxies M81. ... These galaxies are dominated by the old stellar population (12-14 billion years) of low metallicity ([Fe/H] ~ -1.5). ... KDG61 . ... KDG64 ...

... NGC 4449: Close Up of a Small Galaxy . ... Credit Copyright: NASA , ESA , A. Aloisi ( STScI / ESA ), Hubble Heritage ( STScI / AURA ) - ESA /Hubble Collaboration Explanation: Grand spiral galaxies often seem to get all the glory. ... But small irregular galaxies form stars too, like NGC 4449 , located about 12 million light-years away. ... NGC 4449 is a member of a group of galaxies found in the constellation Canes Venatici. ... Publications with keywords: star formation - irregular galaxy . ...

Welcome to the Starburst and Galaxy Evolution website.

Search for the youngest galaxies and the problems of galaxy formation . During 2 last years of work on the search for new galaxies in the phase of first star formation (SF) burst there were carried out spectral observations of 39 blue compact galaxies (BCGs) - candidates to the most metal deficient unevolved galaxies. 23 of them indeed have appeared new metal-poor galaxies with the oxygen abundance (O/H) (as an indicator of chemical evolution) less than 1/10 of the solar value. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2010 September 11 . Star Streams and the Sunflower Galaxy . ... Known by the popular moniker, The Sunflower Galaxy, M63 sports a bright yellowish core and sweeping blue spiral arms, streaked with cosmic dust lanes and dotted with pink star forming regions. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

When: Tuesdays at lunch time (12:30 - 13:30). ... Tue, Aug 11: .. ... 070306: "Low Surface Brightness Galaxies" by Ralf-Juergen Dettmar . 140306: "Galactic Chimneys" by Naomi McClure-Griffiths . ... 090506: "Active Galaxies at high redshift" by Ilana Klamer . ... 050606: "Molecular Loops in the Galactic Center: Evidence for magnetic floatation to accelerate molecular gas" by Prof. Fukui . 130606: "Kinematical Studies of Ionized Gas in Nearby Dwarf Galaxies" by Janine van Eymeren . ...

... Dept. for Physics of Stars&Galaxies . ... Investigation of physical characteristics and evolution of galaxies with active star formation, according to observations at telescopes in the world's largest X-ray, ultraviolet, visible, infrared and radio wavelengths of electromagnetic radiation. ... The analysis of stellar spectra considering deviations from LTE, the evolution and definition of the physical characteristics of stars of late spectral classes.. ... Stars . ... Star clusters of the Galaxy . ...

... Staff . ... Galaxies, AGN, Cosmology . ... Star formation . ... Galaxy archaeology over the last 7 billion years . The stellar populations in galaxies can gain us insight into galaxy evolution. ... The increase of passive galaxies and the decrease of star-forming galaxies from early times to the present-day indicates that the overall star formation activity has declined and galaxies have been transitioning from the active to the passive phase at a fast rate since about 8 billion years ago. ...