... 2008 September 16 . W5: Pillars of Star Creation . ... JPL-Caltech , NASA . ... A likely reason for this is that the older stars in the center are actually triggering the formation of the younger edge stars. The triggered star formation occurs when hot outflowing gas compresses cooler gas into knots dense enough to gravitationally contract into stars. ... W5 is also known as IC 1848 , and together with IC 1805 form a complex region of star formation popularly dubbed the Heart and Soul Nebulas. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. September 17, 1999 . M3: Half A Million Stars . ... Explanation: This immense ball of half a million stars older than the sun lies 30,000 light-years above the plane of our Galaxy. Cataloged as M 3 (and NGC 5272), it is one of about 250 globular star clusters which roam our galactic halo . ... About APOD > . ... NASA Technical Rep.: ...

Supernova 1994D is one of the brighter Sn from the recent past. ... The parent galaxy of this SN, NGC 4526 , was also the host galaxy of SN 1969E ( IAUC 2139 ). ... We have a photometry reference image created by Odd Trondal. ... Images of Supernova 1994D . U of Oregon (Electronic Universe) image 3/26/94 8:10 UT, K-band . ... ING image Undated color . SEDS image Undated . SEDS image Undated (zoom in of last image) . ... U of Oregon (Electronic Universe) light curve . ...

ABSOLUTE PROPER MOTIONS OF 331 OPEN CLUSTERS . ... The proper motions of stars in the fields of 331 open clusters were taken from Four-Million Star Catalog (4M-catalog) of positions and proper motions (Volchkov et al. ... The absolute proper motions for 21 young open clusters have been derived by comparison of precise relative proper motions of individual stars and their corresponding absolute proper motions. ... Sign of proper motions in RA . ... 0.0001 arcsec/yr . ... rms error in RA proper motion . ...

... It is being organized jointly by the Byurakan Astrophysical Observatory (BAO) and the Armenian Astronomical Society (ArAS). ... LIST OF LECTURERS AND LECTURES : Dr. Vladimir AIRAPETIAN (Goddard Space Flight Center, USA): Physics of Winds from Cool Evolved Stars Dr. Don BARRY (Cornell University ... (observation techniques and theory) Dr. Michel DENNEFELD (Institut d'Astrophysique de Paris, France): Introduction to spectroscopic observations Dr. Serguei DODONOV (Special Astrophysical ...

... Новости Астрономии и Космонавтики: от ПРАО , от "Звездочета" , от Железнякова , от "Переплета" ; . ... Рейтинг страниц в теме: . ... В списке темы всего страниц: 29 , из них 7 новых (менее 100 дней) и 1 малооцененных (менее 5 оценок) . ... Оценено и сдано в архив! . ... Rambler-Наука (в т.ч. Астрономия) . ... Курс общей астрономии' (4-е издание, для высших учебных заведений) new! ... Основы астрономии (учебный курс на базе основ физики и математики) new! ... Проект 'Физика и астрономия' new! ...

... The distance scales of the objects are matched both by comparing the first derivatives of the angular velocity determined separately from radial velocities and proper motions and by the statistical-parallax method. ... Good agreement between the inferred 0 and our calculations based on space velocities suggests that the Lindblad relation holds throughout the entire sample volume. ... Brandt and Blitz (1993) published the distances and radial velocities for a total of 206 H II-regions. ... Astron. ...