... 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 . ...

Next: Member Functions (functions) Up: Interface Previous: Integer Indices are 0-relative Index . The ASAP interface is based around a number of ``objects'' which the user deals with. Objects range from the data which have been read from disk, to tools used for fitting functions to the data. ... A tool used to plot the spectral line data . ... A tool used to fit functions to the spectral data . ... A tool which can be used to read data from disks into a scantable object (advanced use). ...

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. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Moon . ... Comets and Asteroids . ... What changed our view of Chariklo is the discovery of a ring system around it, the first such feature found around a Solar System body smaller than a gas giant planet. ... Almost certainly the rings were born when a collision with a smaller asteroid blasted millions of tonnes of debris off CharikloтАЩs surface. ... A ring system detected around the Centaur (10199) Chariklo (Braga-Rigas et al.) ...

... Астронет | ... Переменные Звезды | ... Микролинзирование . ... На протяжении последних нескольких лет в рамках проекта MACHO проводятся наблюдения микролинзирования звезд Большого Магелланова Облака - спутника нашей Галактики. Эффект микролинзирования заключается в гравитационной фокусировке света звезды массивным объектом, находящимся на луче зрения между звездой и наблюдателем. ... Согласно некоторым гипотезам, линзами могут являться реликтовые черные дыры или "нейтралинные звезды". ...

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... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

. 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 .

One of my on-going research interests concerns the dust shells of proto-planetary nebulae or PPNs (also called pre-planetary nebulae, transition objects, and post-AGB objects in the literature; the latter term also applies to a wider selection of objects such as RV Tauri stars), especially the carbon-rich ones that show the unidentified "21 micron' emission feature. ... I am working to find a complete sample of proto-planetary nebulae in these satellite galaxies from the millions of detected stars. ...

... See also changes and comments in configure.in # prefix = @prefix@ exec_prefix = @exec_prefix@ DESTDIR = CFITSIO_LIB = ${DESTDIR}@libdir@ CFITSIO_INCLUDE = ${DESTDIR}@includedir@ INSTALL_DIRS = @INSTALL_ROOT@ ${CFITSIO_INCLUDE} ${ CFITSIO_LIB } ${ CFITSIO_LIB }/pkgconfig SHELL = / bin /sh RANLIB = @RANLIB@ CC = @CC@ CFLAGS = @ CFLAGS @ SSE_FLAGS = @SSE_FLAGS@ FC = @FC@ LDFLAGS = $( CFLAGS ) DEFS = @ DEFS @ LIBS = @ ...

Educator's Guide to Micrometeorites . ... They are actually small bits of rock and metal that collide with Earth's upper atmosphere and, because of friction, burn up. On rare occas