Next: Carbon stars Up: OTHER HYDROGEN-DEFICIENT STARS Previous: Extreme helium stars and . V348sgr may be more closely related to about twenty hydrogen-deficient central stars of planetary nebulae which have similar carbon abundances ( ) and strong emission line spectra ([ Leuenhagen et al. 1995 ], [ Leuenhagen & Hamann 1997 ]). ... Hydrogen-deficient and carbon-rich knots are seen in the inner nebulae of at least two objects (Abell 30 and Abell 78). ...

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• A catalogue of hydrogen-deficient stars
• Armagh Observatory
• JLE Dreyer

Introduction This catalogue contains mainly the atomic data needed in the astrophysical investigations of low-density plasma. It is a revised and extended version of the "Catalogue of Atomic Data for the Rarefied Astrophysical Plasma" (Golovatyj et al. ... Low-density plasma. ... In the present study we represent only the atomic data for computation of sp ectra of low-density astrophysical plasma (most known kinds of it are gaseous nebulae), their thermal and ionization structure. ...

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... General information . ... Staff . Research staff . Technical, administrative & librarian staff . ... Staff in alphabetic order . Research . ... Projects . ... General interest seminars . ... Information . Resources and catalogs . ... Historical highlights . Historical research . Historical archive . ... Online resources . ... Current journals and online accesses . ... Online Journals in INAF Libraries . ... For more informations, please contact the Library (055/2752321) . ...

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• Frequently Asked Questions
• Books and E-Books
• Current Journals and online accesses

... In typical nightly use, the wide field and planetary telescope and cameras record images of favorably placed objects in the sky, including constellations, bright variable stars, nebulae through narrow-band filters, comets, the Moon, and planets. ... Shared Skies telescopes are available for use by students at the University of Louisville and the University of Southern Queensland, and by teachers and students in middle and high schools mentored by faculty at the universities. ...

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Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...

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• Introduction to Astronomy

Astronotes Armagh Planetarium's Stellar Blog! ... Earth Satellites . ... According to Velikovsky, about 4000 years ago a giant volcano on Jupiter erupted and spewed a vast glob of debris into space, leaving the Great Red Spot behind as a permanent scar. The red hot lump ejected from Jupiter (referred to as a comet by Velikovsky) wandered into the inner Solar System, repeatedly crossing the Earth?s orbit and in fact often passing close to our helpless planet in the following millennia. ...

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• Kepler-11: a strange and crowded planetary system | Astronotes
• Kepler-10c: the First Mega-Earth | Astronotes
• Nebulae | Astronotes

ADC CATALOG HOLDINGS SHORT TITLE LIST March 29, 2002 (adapted from ftp://adc.gsfc.nasa.gov/pub/adc/archives/catalogs/key) Category 1: Astrometric and Positional Data - March 29, 2002 1090 Positions of 502 Stars in Pleiades Region (Eichhorn+ 1970) 1107A Washington Cat Visual Double Stars 1984.0 (Worley, Douglass 1984) 1131A SAO Star ...

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. Russian . English .

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• Morphological Catalogue Of The Craters Of Moon

... The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS sources with PSPC countrate CR > 0.2 s -1 . ... 1S We present a summary of an identification program of the more than 2000 X-ray sources detected during the ROSAT All-Sky Survey (Voges et al. 1999) at high galactic latitude, |b| > 30degr , with countrate above 0.2 s -1 . This program, termed the ROSAT Bright Survey RBS, is to more than 99.5% complete. ...

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• Introduction
• Fabry-Perot Interferometer: Gallery Old
• New spectrum of FG Sge

Natural Satellites Service. ... Apparent Encounters . of the Tycho-2 Catalogue stars and the main natural planetary satellites . ... with the Tycho-2 Catalogue stars. ... Instead of three numbers (ntch1 ntch2 ntch3) describing a position of a star in the Tycho-2 catalogue, one conditional number is given. ... Apparent Encounters of the Tycho-2 Catalogue stars and the Galilean satellites of Jupiter . Apparent Encounters of the Tycho-2 Catalogue stars and the major satellites of Saturn . ...

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• Data bases of Natural Satellites. Documentation. Sources

... ADC_Keywords: Galaxy catalogs ; Nonstellar objects Description: NGC 2000.0 is a modern compilation of the New General Catalogue of Nebulae and Clusters of Stars (NGC), the Index Catalogue (IC), and the Second Index Catalogue compiled by J. L. E. Dreyer (1888, 1895, 1908). ... The order of the new catalog is strictly by right ascension, the NGC and IC objects being merged into one machine-readable file. ... The book also contains a table of right ascensions for NGC and IC objects. ...

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• Astronomical Catalogues

... galaxies: bulges galaxies: clusters: general galaxies: clusters: individual: . ... star formation statistics stellar content structure Cosmology ( cosmology :) cosmic background radiation ( cosmology :) cosmological parameters cosmology : miscellaneous cosmology : observations cosmology : theory ( cosmology :) dark ages, reionization, first stars ( cosmology :) dark energy ( cosmology :) dark matter ( cosmology :) diffuse radiation ( cosmology :) distance scale ( cosmology :) early Universe (...

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... 323, P 659-673 (1997). Abstract . ... 323, P 674-684 (1997). ... Number counts and optical identifications of faint IRAS sources . ... 323, P 685-696 (1997). ... 323, P 697-706 (1997). ... 323, P 707-716 (1997). ... 323, P 717-726 (1997). ... 323, P 727-738 (1997). ... 323, P 739-748 (1997). ... 323, P 749-761 (1997). ... The [Fe/H] distribution of a volume limited sample of solar-type stars and its implications for galactic chemical evolution . ... helpdesk@link.springer.de . ...

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• Springer LINK:A&A-EE: Table of Contents Volume 323 Number 2 (1997)
• Springer LINK:A&A-EE: Table of Contents Volume 317 Number 2 (1997)
• Springer LINK:A&A-EE: Table of Contents Volume 320 Number 3 (1997)

Lectures . ... 100 Years of Cosmology: From Spiral Nebulae to the Cosmic Microwave Background.тАЭ ? ... Michael Way, astronomer/computer scientist at NASAтАЩs Ames Research Center and its Goddard Institute of Space Studies, will give the first lecture of the AAAтАЩs 2009-10 lecture series Friday, October 2 when he discusses тАЬ100 Years of Cosmology: From Spiral Nebulae to the Cosmic Microwave Background.тАЭ The free public lecture is at 6:15 p. m. at the Kaufmann Theater of the AMNH. by . ...

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• Astro Imaging Workshop: Planetary Astro Imaging with a DSLR ? December 7, 2014

Системные исследования и разработка спутниковых систем ДЗЗ; . Разработка и создание бортовых радиометрических средств в СВЧ-диапазоне; . Разработка методов дистанционной диагностики процессов в системе океан-атмосфера с помощью спутниковых средств СВЧ-радиометрии (синоптические океанические вихри, фронтальные зоны, течения, волны Россби, тайфуны и ураганы, явление Эль-Ниньо). ... Директор . ... 1-ый заместитель директора . ... 2014 НТЦ "КОСМОНИТ" ОАО "Российские космические системы" . ...

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. Back to A.Zasov's homepage.

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... Positions and Proper Motions of 258,997 Stars for the Epoch and |Equinox of 1950.0", Publ. of the Smithsonian Institution of |Washington, D.C., No. ... 1971-1979, "Lowell Proper Motion Survey" |(red dwarfs), Lowell Obs. ... LHS |Luyten, W. J. 1976, "A Catalog of Stars with Proper Motion |exceeding 0".5 annually", Publ. of Univ. of Minnesota, |Minneapolis, Minnesota; Luyten, W. J., Albers, H. 1979, "An |Atlas of Identification Chart for LHS Stars", Publ. of Univ. of |Minnesota, Minneapolis, Minnesota...

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• General Catalogue of Variable Stars: Vols I-III (the new electronic version).
• General Catalogue of Variable Stars: Homepage.
• Future Prospects of Variable-Star Catalogues

astro-ph/0501177 Открытие несвязанной гиперскоростной звезды в гало Млечного Пути (Discovery of an Unbound Hyper-Velocity Star in the Milky Way Halo) . ... Authors: Stefan Jordan et al. astro-ph/0501589 Гало темной материи с массой порядка земной как первые структуры в ранней Вселенной (Earth-mass dark-matter haloes as the first structures in the early Universe) . Authors: Juerg Diemand, Ben Moore, Joachim Stadel . ... Authors: Abraham Loeb . ... Authors: Marta Volonteri, Rosalba Perna . ...

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• Stellarium: File and Directory Structure
• Twitter Weekly Updates for 2012-06-16
• Stellarium: NebulaMgr Class Reference

. Nebulae . Trifid Nebula: 5,200 light years away, located in constellation Sagataurus . Visual DSS . Visual Colored . AAO . X-ray . Planetary Nebula NGC7027: 3,000 light years away located in constellation Cyngus . X-ray . Optical colored . Infrared . Student Home . Picture Home .

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• The AstroStat Slog planetary motion
• Pat Slane: Research

... Properties of Dust Grains in Planetary Nebulae - I. The Ionized Region of NGC 6445 . ... Based on this model, we show from depletions in the gas phase elements that little grain destruction can have occurred in the ionized region of NGC 6445. ... The most likely conclusion is that grains are residing inside the ionized region of NGC 6445 and that the low temperature and flux of the grain emission are caused by the low luminosity of the central star and the low optical depth of the grains. ...

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• SAI CAS: Cross-catalogue match interface
• SAI CAS: About the SAI CAS project