... 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 ...

David P. Stern . Laboratory for Extraterrestrial Physics, Goddard Space Flight Center, Greenbelt, MD 20771. Abstract . Using orbital criteria developed in part 1 of this study (Stern, [1]) 23E (for 25 RE apogee), enhancing (at various times) local coverage of the substorm reconnection region, low latitude boundary layer and bow shock. The article concludes with a list of 30 targeted scientific investigation, each with its appropriate formation. ... Last updated 31 October 2002 . ...

Chair of solid state physics . ... Spectroscopy of semiconductors and dielectrics. ... Interband transitions and optical properties of semiconductors. ... Optical properties of metal in a Drude-Lorentz model. Excitons in solids. ... Impurity states in dielectrics and semiconductors. Optical orientation of electron and exciton spins in semiconductors. ... General insight onto interband transitions: electron-radiation interaction, quantum theory of optical transitions in semiconductors. ...

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. Andrey Kravtsov "High-Resolution Cosmological Simulations of Cluster Formation" . < FIRST ] [ PREVIOUS ] [ MAIN . Slide 17 (of 17) .

K?nigl, A. & Salmeron, R. 2010. ... K?nigl, A., Salmeron, R. & Wardle, M. 2010. ... Wind-driving protostellar accretion discs - I. Formulation and parameter constraints . ... Magnetorotational instability in protoplanetary discs: The effect of dust grains . Salmeron, R., K?nigl, A. & Wardle, M. 2007. ... Magnetorotational instability in protoplanetary discs . ... Magnetorotational instability in dusty protostellar discs. ... Magnetorotational instability in protostellar discs . ...

All stars are formed deep inside molecular clouds. One of the current enigmas lies in the formation and evolution of molecular clouds, specifically the conversion from atomic to molecular gas. ... In July of 2005 GALFA mapped about 300 square degrees of the Taurus Molecular Cloud (TMC) complex yielding the largest high-resolution 21cm map of a star forming region, while using less than 40 hours of observing time. ...

Программа спецкурса ЗВЕЗДООБРАЗОВАНИЕ для студентов 4-5 курса астрономического отделения физического ф-та МГУ. Автор: Сурдин В.Г. Курс рассчитан на 32 ч (16 лекций) и посвящен формированию и ранней эволюции звезд и звездных агрегатов; физическим процессам в межзвездной и околозвездной среде, сопровождающим рождение звезд; проблемам звездной динамики формирующихся скоплений и ассоциаций. ... Как человечество в различные эпохи представляло звезды и их эволюцию. ... Химический состав звезд и МЗС. ...

Bizyaev D., "The Argument Against Long Extragagalactic Distance Scale", Astron. ... Soviet Astronomy) 1997. ... Zasov A., Bizyaev D., "An Estimate of the Hubble Constant using a Criterion for Gravitational Stability of Gaseous Discs", Pis'ma v Astron. ... 1996. ... D.Bizyaev, "Types of galaxies", 1996, Zvezdochet, No 11, p.22 (in Russian) . D.Bizyaev, "The Hubble Constant", 1996, Zvezdochet, No 2, p.20 (in Russian) . D.Bizyaev, "Magellanic Clouds", 1995, Zvezdochet, No 6, p.12. (in Russian) . ...

UPPER PANEL: The gas surface density map in log scale. The red circle in the center represents the central protostar. The development of spiral structure in the protostellar disk is evident. Dense protostellar/protoplanetary clumsp form within the spiral arms and are driven into the protostar by the action of gravitational torques. LOWER PANEL: The mass accretion rate onto the protostar as a function of time. The mass accretion rate is characterized by very short ( . ...

Astronomy Discussion Forums . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Observe Every Photon's Size Experiment . ... Post Message | ... Observe every photon's size experiment . 1.The slow process of the formation of the light diffraction pattern experiment . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Searches for Star Formation in Damped Systems . ... The objective was to measure the star-formation rates in these systems. However, no H emission was detected above our limits of Wm -2 , corresponding to star formation rates ( q 0 =0.5). ... For q 0 =0.5 our limits are in conflict with the star formation rates predicted under the assumption that the high- z DLAs are the fully-formed galactic-disk counterparts of today's massive spiral galaxies. ...