... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

We present ~1000 new candidate Young Stellar Objects (YSOs) in the Large Magellanic Cloud selected from Spitzer Space Telescope data, as part of the Surveying the Agents of a Galaxy's Evolution (SAGE) Legacy program. ... The candidate YSOs were selected from the SAGE Point Source Catalog from regions of color-magnitude space least confused with other IR-bright populations. ... They are more clustered than generic point sources, as expected if star formation occurs in filamentary clouds or shells. ...

.

... Ever wonder how solar-mass stars form?. ... In order for material to accrete onto a protostar it has to lose angular momentum. The angular momentum of a large natal cloud leads to the formation of a circumstellar disk and inner accretion disk as the cloud collapses. ... Winds generated in the inner disk or close to the stellar surface (we don't know which) expel material along the disk rotation axis. ... This provides the highest resolution observational data on nearby young stars. ...

Next: Data Structures Up: Multi-Object Spectroscopy Previous: Fitting the dispersion . DEFINE/MOS helps you to localize your objects and sky regions and by default works automatically. ... In the averaged frame it tries to detect objects above the threshold ( ) within the search window and fits a gaussian to any detected object. ... SET/MOS def_mode=i . ... It may be advisable to do at least a rough sky subtraction ahead of this command to facilitate the detection of the objects. ...

... 2003, ApJL, in press . ... 2003, A , in press . HST/STIS observations of rotation of T Tauri jets . ... 2003, Proceedings of "JENAM 2002: The early stages if star formation", in press . ... 2003, ApJ, in press . ... S. Hotzel, J. Harju, C.M. Walmsley . ... E. Habart, A. Abergel, C.M. Walmsley, D. Teyssier . ... Codella, C., Bachiller R., Benedettini M., Caselli P. MNRAS, 2003, in press . ... Bianchi S., Goncalves J., Albrecht M., Caselli P., Chini R., Galli D., Walmsley M. 2003, A 399, L43 . ...

... Next: Object Detection Using Up: Object Detection and Previous: Automated Classification of . ... A status report of the The GSC Object Classifier (GOC) project is presented. ... The GSC contains multiple entries for some objects due to plate overlap. It classifies objects as stars, non-stars, galaxies, blends and potential artifacts; the latter three classifications are rare, and only exist in GSC version 1.1, to which they were added manually. ... star, . ... non-star, . ...

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

. True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . Images show regions used to extract spectra . Regions with red strikes are excluded . Background was subtracted from a region around or close to the SNR. Back to SNR J0526.0-6604 Index . Chandra Supernova Remnant Catalog . Main Page | Galactic SNR | Magellanic Cloud SNR . True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR .

... Classes . Files . ... File List . File Members . images . Regions . ... 00087 // The image regions have to contain WCRegion objects, otherwise an 00088 // exception is thrown. 00089 // group 00090 WCCompound ( const ImageRegion region1, const ImageRegion region2); 00091 WCCompound ( const ImageRegion * region1, 00092 const ImageRegion * region2 = 0, 00093 const ImageRegion * region3 = 0, 00094 const ImageRegion * region4 = 0, 00095 const ...

... Lemmon SkyCenter , University of Arizona Explanation: The cosmic brush of star formation composed this alluring mix of dust and dark nebulae. Cataloged as Sh2-239 and LDN 1551, the region lies near the southern end of the Taurus molecular cloud complex some 450 light-years distant. Stretching for nearly 3 light-years, the canvas abounds with signs of embedded young stellar objects driving dynamic outflows into the surrounding medium. ... NASA Web Site Statements, Warnings, and Disclaimers . ...

. Go to RUSSIAN (KOI-8) . The spectrum of giant HII region in galaxy NGC 1084: . Grating : R1302(17) . Halpha region . Exposure time: 780s . Processing: 2 exposures sum with cosmic hits cleaning . The spectrum of bright HII region M17: . Grating : R1302(17) . Halpha region . Exposure time: 600s . Processing: 2 exposures sum with cosmic hits cleaning . Back to LSS main page. Back to Laboratory Home Page .

In 1950 Jan Oort noticed that . no comet has been observed with an orbit that indicates that it came from interstellar space, . ... From this he proposed that comets reside in a vast cloud at the outer reaches of the solar system. ... Unfortunately, since the individual comets are so small and at such large distances, we have no direct evidence about the Oort Cloud. ... Its orbit is intermediate between the Kuiper Belt and what was previously thought to be the inner part of the Oort Cloud. ...

... 2011: . Detection of galaxies with large peculiar velocities . ... New galaxies with polar rings . ... The new catalog contains 275 galaxies. ... Radio galaxy RC J0311+0507, a unique object of the early Universe . ... The estimation of the stellar population age in the host galaxy via the multicolor photometry (BTA) and new infrared data (UKIRT, 2011), amounting to 0.8 Gyr results in the moment of its formation when the universe was about 0.5 milliard years old (z~10). ... Archive . ...

Stellarium 0.12.3 . ... Classes . ... StelSphericalIndexMultiRes Class Reference . ... voidљ . ... Insert the given object in the StelSphericalIndexMultiRes . ... template<class FuncObject > . ... processIntersectingRegions (const SphericalRegionP &region, FuncObject &func) const . ... processAll (FuncObject &func) const . ... processBoundingCapIntersectingRegions (const SphericalCap &cap, FuncObject &func) const . ... processContainedRegions (const SphericalRegionP &region, FuncObject &func) const . ...

... 8, ``Celestial Mechanics'', 2002 Formation and migration of trans -- Neptunian objects S. I. Ipatov 1;2 1 Institute of Applied Mathematics, Moscow, Russia 2 NASA/GSFC, Greenbelt, USA We support the Eneev's idea [1] that the largest (with diameter d?100 km) trans ­ Neptunian objects ( TNOs ) moving now in not very eccentric orbits ... The total amount of water delivered to the Earth during the formation of the giant planets was about the mass of water in the Earth's oceans. ...

... no comet has been observed with an orbit that indicates that it came from interstellar space, . ... From this he proposed that comets reside in a vast cloud at the outer reaches of the solar system. ... Unfortunately, since the individual comets are so small and at such large distances, we have no direct evidence about the Oort Cloud. ... T he Kuiper Belt is a disk-shaped region past the orbit of Neptune roughly 30 to 100 AU from the Sun containing many small icy bodies. ... Small Bodies .. ...

... Tonight's Sky . ... Star Atlas . ... stars . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... An anarchic region of star formation captured . ... RELATED TOPICS: STARS . The star formation region NGC 6559. ... The Danish 1.54-meter telescope located at the European Southern Observatory (ESO) La Silla Observatory in Chile has captured a striking image of NGC 6559, an object that showcases the anarchy that reigns when stars form inside an interstellar cloud. ...

... The project assumes creation of an international space observatory - the interferometer "Earth - Space - Space" in order to perform of astronomical investigations in millimeter, submillimeter and infrared regions with extremely high sensitivity (to a few nanoJanskies units of flux density in continuum spectrum) and extremely high angular resolution (to a parts of microsecond of arc or, possibly, nanosecond). ... radio-interferometric channels of the system "Space - Space", region 0.2 - 3 mm; . ...