... GSAOI Home . ... Science . ... Despite vast increase in our understanding of the evolutionary nature of planetary nebulae (PNe) during the last three decades, a central question remains: where is the missing mass? Theoretical evolutionary tracks predict that all stars with masses in the range 1.4-8 M Sun should become PNe. ... Clearly, much of the mass of the planetary nebula shell must remain un-ionized, and much of it may be in molecular form. ... The Magellanic Cloud PNe are ideal for this. ...

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... General information . ... Staff . Research staff . Technical, administrative & librarian staff . ... Research . ... Infrared astronomy . ... Solar physics . ... Library . ... Friends of Arcetri . ... Computing Science . ... Operating Systems and Languages . ... General Physics . ... Structure of the Matter, Atomic and Nuclear Physics :General interest texts . ... Plasma Physics : General interest texts . ... Astronomy : General interest texts . ... Physics of the Planetary System . ...

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• Frequently Asked Questions
• Planetary Data Browser
• Galileo Probe Suggests Planetary Science Reappraisal

. Distribution of Supernovae according to their parent galaxies' morphological type. In this page all known Supernovae are collected according to the morphological type of their parent galaxies. Several supernovae and galaxies are not well classified and they have been marked as NC. This graph is kept up to date till SN 2000ek .

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• Supernovae distribution according to their magnitudes.
• Distribution of Supernovae according to their parent galaxies' recession
• APOD: March 25, 1998 - Planetary Nebula NGC 7027 in Infrared

... Sciences) - (01.03.02 - Astrophysics and Radioastronomy), Main Astronomical Observatory of Ukrainian National Academy of Sciences, Kyiv, Ukraine. ... Sciences) (01.03.03 - Geliophysics and Solar System Physics), Main Astronomical Observatory of Ukrainian National Academy of Sciences, Kyiv, Ukraine. ... 1977 - 1981 - Engineer, Main Astronomical Observatory, Ukrainian National Academy of Sciences, Kiev, Ukraine . ... Institute: Main Astronomical Observatory of Ukrainian National Academy of Sciences . ...

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• Anatoliy P. Vidmachenko
• Activity - Page 2
• Achievements - Page 4

. Planetary Approach . "Final Stage of the Hohmann Transfer" . Previous . Main . Next .

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• Armagh Observatory
• Armagh Astropark
• Venus, Jupiter, Moon Conjunction and Occultation

... Authors: Massimo Della Valle 1,2 , Mario Livio 1 We examine a sample of novae the distances of most of which have been determined by nebular parallaxes, and determine their spectral classes according to the classification of Williams (1992). We show that novae which have been classified as He/N tend to concentrate close to the Galactic plane and are fast and bright, while Fe II novae are slow and faint and they are distributed more homogeneously up to heights of ~ 1000 pc above the Galactic plane. ...

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• Extragalactic Cepheid Distances by Calibrated Period - Luminosity-Color
• WFPC Image Restoration and Undersampling Problems
• Simkin Robinson: WFPC Image Restoration and Undersampling Problems

... We have defined a set of rules for classifying SUSI exposures according to the exposure type (BIAS, FF, SCI) and a set of rules for classifying them according to the optical path. ... The MIDAS session shown in Table creates these rules and applies them to our set of SUSI exposures (Table ). The result of the classification process is illustrated in Table . ... The table must contain the following columns: . ... Table: Classification Table for SUSI exposures (susi_rule.tbl) . ...

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• LEDA data base
• Classification criteria
• HyperLEDA documentation: HyperLEDA: catalogue of agnclass (a109)

. F IGURE . 4. Metallicity is plotted against galactocentric distance (a) and distance from the Galactic plane (b) for the globular clusters of thick disk (triangles) and old halo (circles). The slopes of linear regressions gives the values of radial and vertical metallicity gradients, corresponding. The points denoted with squares have been excluded from regressions according to the 3 rule. discussion in the text | previous figure | next figure .

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• Population of Galactic globular clusters, figures
• Globular clusters with anomalously small masses, figures

Stellarium 0.12.3 . ... Classes . ... ClassљList . ClassљIndex . ... Skybright Class Reference . Compute the luminance of the sky according to some parameters like sun moon position or time or altitude etc.. ... setDate (int year, int month, float moonPhase) . ... Set the moon and sun zenith angular distance (cosin given) and precompute what can be This function has to be called once before any call to getLuminance() More... љ . ... cos(angular distance between moon and the position) . ...

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... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

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• Detection of radio pulsar pairs
• Catalog of the LV Galaxies

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• A Nature of Polar-Ring Candidate Galaxy ZGC 2315+03

You can also see this page in Russian with using KOI8 (X Windows) or CP1251 (MS Windows) Cyrillic coding. The Laboratory supports the space TV experiments, mainly in the planetary exploration missions. ... Image Co-registration . ... PHOBOS mission - Martian satellites investigations. Phobos on the Martian limb, the image from Phobos-2 probe from 02/28/89. ... Russian Space Bulletin. ... Last modified at June,26 1997 Alexey Kuzmin: akuzmin@mx.iki.rssi.ru . Back to IKI home page ...

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• Solar System Data Archive Home Page
• Kp Index: Classification of Days
• Kepler's First Law of Planetary Motion

This negative photo shows the faint image of periodic comet Halley (in the circle) at the record heliocentric distance 18.82 AU (= 2,820 million km, about the distance of Uranus). ... They were cleaned to remove various sky and instrumental noise, shifted according to the predicted motion of the comet and then co-added. ... The position in the sky is less than 1 arcsec from that predicted on the basis of the comet's very well-determined orbit. ... Total exposure time: 13,500 seconds. ...

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• Richest Planetary System Discovered | ESO
• DFS Department internal procedure for issue of documentation
• ESO - Thesis Topic: Planetary Nebulae and HII regions in the Elliptical Galaxy

The FSP3 event includes those parts of the magnetic conjugations between any couple of four considered spacecraft, which satisfied to the FSP1 or to the FSP2 criterion. ... The value of the relative geocentric angular distance between magnetic field line's footprints is considered during FSP3 situation selection. The mentioned angular distance value less then 5 deg is used as a criterion of the magnetic conjugation. ... for the first SC the red color and the first line are used, . ...

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• Планетные исследования
• Corrected Geomagnetic Coordinates
• CYlindrical GAmma-ray Monitor CYGAM -

Uniform Circular Motion . Kepler's First Law: All planets move about the sun in an elliptical orbit with the sun at one foci. ... In the above P is the orbital period measured in years and A is the semi-major axis measured in units of AU (the distance from the earth to the Sun). ... The discovery of retrograde motion in the orbit of mars was a serious challenge to the standard geocentric cosmology which demanded that all the planets orbit the earth in the same direction. ...

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Galushina T., Bykova L., Letner O., Baturin A. Tomsk State University Russia 1 Investigation Dynamics Asteroid of of 2 Solving problems construction of numerical model of asteroid motion with account chosen perturbed factors; asteroid orbit improvement according to positional observations; construction of initial probabilistic domain by linear and nonlinear methods; study of evolution of initial probabilistic domain; revealing of ...

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Next: Calling Parameters Up: CAL_getLSFdefocusDist Previous: CAL_getLSFdefocusDist Contents . ... The distribution is computed according to the inner ( ) and outer ( ) radii of the XRT assemblies, so that the contribution appears like the projected telescope aperture for finite defocus distance (which is provided by CAL_getRFCdefocus ). (25) . ... Next: Calling Parameters Up: CAL_getLSFdefocusDist Previous: CAL_getLSFdefocusDist Contents Michael Smith 2011-09-20 ...

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Russian Space Science Internet (RSSI) is a successful result of RSSI Project. ... space oriented organizations; . ... RSSI offers for its members : . ... videoconferences via MBONE Internet protocol (there are 2 tunnels available now through the general IP network: one to NASA Internet, and another to Moscow State University); . ... It is designed so that all organizations connected to the RSSI gain access to the resources of Russian computer networks as well as world wide Internet. ... nic@rssi.ru ...

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Aristarch is Copernic of Classic World. ... First Aristarch determined the fact for how many times the Sun was father then the Moon and then he compared the Sun and the Moon with the Earth. ... Only the Moon rotates around the Earth. ... Gipparch suggested that the Sun turned around the Earth steady and in circumference but the Earth is displaced according its centre. ... The orbit point in which the Sun is nearer to the Earth Gipparch called perigee and the most remote one he called apogee . ...

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• lebede
• jupitere
• Galiliye

Electronic access is now available for all ASP Conference Series Volumes. View the current list available on this page or browse the e-Book Access site . ... Vol 1-218 . ... Vol 219+ . ... Purchase the printed volume, which includes free electronic access. ... Vol. ... eds. F. Prada, D. Martinez-Delgado and T. J. Mahoney . ... Print ISBN: 1-58381-190-7 . e-Book ISBN: 978-1-58381-261-7 . ... Print ISBN: 1-58381-187-7 . e-Book ISBN: 978-1-58381-260-0 . ... Print ISBN: 1-58381-186-9 . ...

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• ASP Conference Series, Vols. 1-34
• ASP Conference Series, Vols. 195-221
• ASP Conference Series, Vols. 253-285