... 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 . ...

... For example, as pointed out by Perlman et al. (1996b), the lack of a Ca II H & K break strength criterion in the 1 Jy, S4 and S5 samples of BL Lacs, has caused numerous objects to be misclassified as radio galaxies instead of BL Lacs (see also March? Browne 1995, 1996). ... While one may argue that some of these objects fall in the expanded region of the (H & K break strength, equivalent width) diagram that March? et al. (1996) allot to the BL Lacs, several, for example 1 Jy 1308+326, do not. ...

... Duchamp | ... Top | Duchamp is a solution to this problem of three-dimensional source finding. ... A list of the detections and their properties, as well as the input parameters that were used. [text file] . ... It can be downloaded in source format, in a gzipped tar archive. ... Changes from the previous version can be seen here (this file is included in the tar archive), while the archive files and documentation from the previous release versions are here , if you are really interested. ...

... The search for distant objects which can be both galaxies and quasars is one of the most important problems of observational astrphysics, because it allows one to determine cosmological parameters connected with the time of appearence and evolution of stellar systems, large scale structure of the Universe. ... Radio galaxies are important objects to be studied because they are sources of infrared-optical-ultraviolet continuum, emission lines and continual radio emission. ...

... Hoags Object: A Strange Ring Galaxy . ... Credit Copyright: R. Lucas ( STScI / AURA ), Hubble Heritage Team , NASA Explanation: Is this one galaxy or two? ... How Hoag's Object formed remains unknown, although similar objects have now been identified and collectively labeled as a form of ring galaxy . ... The above photo taken by the Hubble Space Telescope in July 2001 revealed unprecedented details of Hoag's Object. ... July . ... July 2013 . ... The Double Ring Galaxies of Arp 147 from Hubble . ...

... Realtime, Object-oriented Reduction of Parkes Multibeam Data using AIPS++ . D. G. Barnes . ... The New User Interface for the OVRO Millimeter Array . ... The IRAF Mosaic Data Reduction Package . ... Determination of the Permissible Solutions Area by Image Reconstruction from a few Projections: Method 2-CLEAN DSA . ... Substepping and its Application to HST Imaging . ... The NCSA Horizon Image Data Browser: a Java Package Supporting Scientific Images . ... The Mosaic Data Capture Agent . ...

... Sorted by Name For the year 1996 , 96 supernovae and 0 extragalactic novae were reported. 96 of these supernovae were named by CBAT, 0 were given possible supernova designations, and 0 were not reported to CBAT. 24 supernovae were found in NGC/IC galaxies, 36 were found in named galaxies 24 objects were discovered by amateurs 0 were brighter than 13th Magnitude 8 were brighter than 16th Magnitude 27 were brighter than 18th Magnitude 54 Type I supernovae were ...

Next: Emission-line galaxies Up: The Hamburg/SAO Survey for Previous: Line parameter measurements . In total 108 new candidates and 5 known ELGs have been observed. ... Only 2 of the latter have good enough S/N ratio to identify absorption features enabling to measure their redshifts. The remaining 20 objects appeared to be either stars with characteristic absorption lines or stellar objects with featureless spectra where the signal-to-noise ratio was insufficient to identify lines. ...

New Moons of Uranus . Brent Gladman's Home Page . ... The discovery of two probable distant satellites of Uranus was reported by B. Gladman, P. Nicholson, J. Burns and J. Kavelaars. ... This discovery was reported in the IAU Circular 6764 . ... Discovery image of S/1997 U 2 . This shows the discovery image of brighter of the two new moons of Uranus. ... This shows the discovery image of faint new moons of Uranus. ... This shows another discovery image of faint new moons of Uranus. ... Uranus . ...

For the year 2011, 957 supernovae and 39 extragalactic novae were reported . 288 of these supernovae were named by CBAT , 92 were given possible supernova designations, and 505 were not reported to CBAT . 96 supernovae were found in NGC/IC galaxies, 256 were found in named galaxies 429 Type I supernovae were found 389 Type Ia 21 Type Ib 17 Type Ic 5 Type I-pec 160 Type II ...

... Since the reddening found for the stars in Table 13 was small, no reddening correction was attempted. ... These diamonds indicate the positions of very low mass, 3 Myr old, objects from the work of Burrows et al. ... This optical V versus R - I scheme is a very powerful method of detecting very low mass (VLM) objects. ... Because of this, young brown dwarfs are intrinsically no more difficult to observe in the optical than low mass stars at the age of Orionis. ...

IKI Seminar . Mechanics, Control and Informatics . Main page . Reports . Discussion . ... The seminar is dedicated to investigation of dynamics, control and identification of mechanical systems and use of modern computer and information technologies in order to solve these problems. The object of the seminar is theoretical research and applications including space research. Main results of works presented on the seminar are placed on this site and freely accessible. ...

... Reconstruction of peculiar velocities of galaxies from large-scale redshift catalogues provides an exemplary application of optimal transport. ... U Frisch, S. Matarrese, R. Mohayaee, A. Sobolevsky, A reconstruction of the initial conditions of the Universe by optimal mass transportation , Nature, 417 (2002) 260-262 ( arXiv:astro-ph/0109483 ) . ... R. Mohayaee, A. Sobolevskii, The Monge Amp re Kantorovich approach to reconstruction in cosmology , Physica D (2008) accepted ( arXiv:0712.2561 ) . ...

... 2) VLBI survey of faint FIRST sources: With Drs. Porcas, Alef (MPIfR, Bonn) & Salter, Tapasi is begining a VLBI visibility survey of around 1000 faint (down to 1.4-GHz flux density of 1 mJy) sources selected from the VLA-FIRST survey. ... 4) CSS Sources: Tapasi is also a co-investigator (along with Drs. ... 5) Continuum Surveys with ALFA: In addition, Tapasi has also joined the consortium for making an all stokes (Arecibo) sky, continuum survey using the up-coming L-band Feed array system. ...

. Back to Research Divisions . IRE RAS Homepage .

... The Large Telescopes Program Committee of Russian AS . ... Executive Secretary, e-mail: request@sao.ru . Telescope RATAN-600 Time Request deadline: I half-year (Jan. ... Program title .. ... Principal investigator .. ... Request status .. ... Retarded applications and ones not conforming to form will not be accepted by the Committee. ... In some exceptional cases the Program Committee Secretary can accept a request after deadline with permission of the Chairman of Committee or director of SAO RAS. ...

... Tonight's Sky . ... Sky this Month . ... space physics . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Sky Events . Get to Know the Night Sky . Tour the Deep Sky . Sky Guide . ... Observing springtime deep-sky objects with a large telescope . ... Johns Hopkins University Applied Physics Lab, Laurel, Maryland . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... 13th European VLBI Network Symposium . and Users Meeting . on September 20-23, 2016. ... 13th European VLBI Network Symposium and Users Meeting on September 20-23, 2016. ... Year book "Ephemerides of Minor Planets for 2016" on-line . ...

General Forum Message . Forums: . ... Deep Space Object Galaxy Near M13 . ... Can anyone tell me if there is a DSO (likely a galaxy) near M13? ... The reason it interests me is that I drew a sketch of M13 years and years ago while observing - and that object is one of the handful of 'stars' that I drew. ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...