... We demonstrate through numerical simulations that model parameters estimated with our technique are essentially bias-free, even when the average number of counts per bin is 1. ... The IW technique avoids such biases by estimating through successive iterations, where for each iteration, j, , and the best-fit parameters are determined by minimization of . ... In our sample, we find that the minimum values and best-fit parameters converge after about 6 iterations. ...

... Observing programs General information Main characteristics of the Radio telescope Main research areas Principle of generation of radio images Radio telescope 's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication of data Possibilities of observing the structure and dynamics of microwave activity Basic Research results Observing programs . ...

... In this paper we present the results of detailed B, V, R, I, and H study of the isolated nearby blue compact dwarf (BCD) galaxy NGC6789. Judging from the literature the observed galaxy has not been resolved into stars up to now. ... The distance of the galaxy, estimated from the tip of the red giant branch (TRGB) is 2.1 Mpc which places NGC6789 close to the Local Group. ... Key words: nearby galaxies: dwarf galaxies (NGC 6789): distance moduli: star content . ... Distance. ...

... For each observed position the table contains designation of object as in file of observations, the time of observation, the number and name/ preliminary designation of minor planet supposedly identical with observed object, the values of O – C (observed position minus computed one) in right ascension and declination expressed in arcsec, the difference O – C between observed magnitude and computed one, the code of observatory in the Observatory list (see Observatories section). ...

... APT Activities and Science Results 3. ... APT Secretary Philip Edwards (ISAS) reviewed the aims of the APT (http://www.vsop.isas.ac.jp/apt/DefinitionAndAims.html). ... The Australia Telescope Compact Array, and Ceduna, Hartebeesthoek, Kashima, Mopra, Parkes, and Shanghai telescopes of the Asia-Pacific Telescope participated in these observations. ... In the absence of Tetsuo Sasao, Philip Edwards briefly described results of the APT 22 GHz observations conducted from October 1st to 5th, 1997. ...

LOC Web-site . The 13 th International Astronomy Olympiad has been held successfully in Trieste (Italy) on October 13-21, 2008. ... There were 19 teams participated in the XIII IAO: . ... Monday, October 13 - Day of arrival . Tuesday, October 14 - Day of opening ceremony . ... M.G.Gavrilov (IAO Chairman) - Chairman, . C.Boehm (Trieste, XIII IAO-2008 LOC Chairman), . ... Dr. Michael G. Gavrilov, Founding Chairman and Coordinator of the International Astronomy Olympiad (IAO) . ...

... Mass . 17a. Measuring Mass . ... A medium-size (1.25 inch wide) binder clip, as is used in offices to hold papers together--the type made of flat blue steel, with two wire handles. ... The theory predicts that the oscillation period should be proportional to the square root of the oscillating mass, including the mass of the clip. Note that gravity plays no part here: the oscillation period would be the same on the Moon or in zero-g. Denoting square root by SQRT, we have . ...

... GCN 8471 | ... TITLE: GCN CIRCULAR NUMBER: 8516 SUBJECT: GRB 081102: MASTER refind and final results DATE: 08/11/11 15:50:10 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinski, I.Zalognikh Ural State GCN Circ 8470, Lipunov et al., ...

Find Similar Abstracts . ... Large scale distribution of matter - Galaxies and their clustering properties . ... 17-21, 1986 (A87-52256 23-90). ... 00/1986 . ... The distribution of galaxies in space is characterized by the existence of large inhomogeneities - the Large Scale Structure of the universe (LSS). ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

. Avg subtructed . unfiltered . SN 1 . SN 1+2 - annual . SN 2 . SN 3 - secular . SN 4 . SN 5 . First SNs 1-10 . 10 . Trend of secular changes SN 3 . GIA model subtructed . Remains . SN 1 . SN 1+2 - annual . SN 2 . SN 3 - secular . SN 4 . SN 5 . First SNs 1-10 . 10 . Trend of secular changes SN 3 .

... Staff . ... Galaxies, AGN, Cosmology . ... Star formation . ... Galaxy archaeology over the last 7 billion years . The stellar populations in galaxies can gain us insight into galaxy evolution. ... The increase of passive galaxies and the decrease of star-forming galaxies from early times to the present-day indicates that the overall star formation activity has declined and galaxies have been transitioning from the active to the passive phase at a fast rate since about 8 billion years ago. ...

... 10.06.2014 . ... This was done (again) recently by NASA's Chandra X-ray Observatory for the nearby interacting galaxies known as the Whirlpool (M51). ... Open Cluster NGC 290: A Stellar Jewel Box . ... The photogenic cluster, pictured above, was captured recently by the orbiting Hubble Space Telescope. ... A star cluster around 2 million years young, M16 is surrounded by natal clouds of dust and glowing gas also known as The Eagle Nebula. ... The Space Station Captures a Dragon Capsule . ...

... Fall 2007 . Winter 2008 . Fall 2006 . ... Spring 2007 . Summer 2007 . ... Fall 2004 . ... Winter 2004 . Spring 2004 . Summer 2004 . ... Since the first detection of a cosmic ray event with energy above 10 20 eV in 1962, their nature and origin remain unknown. ... A new generation cosmic ray detector, the Pierre Auger Observatory, has been designed to study cosmic rays with energy above 10 18 eV and answer the crucial questions of ultra high energy cosmic ray physics. ...

... Astrophysics Group . ... COAST . COAST Astronomical Results . ... Surface Imaging of Betelgeuse . ... This page highlights some astronomical results obtained with COAST over the years. These are listed in chronological order (most recent first). ... Measurements of cyclic variations in the angular diameter of Chi Cygni . ... The first infrared image from an aperture synthesis array . ... The images of Betelgeuse below were reconstructed from COAST data taken in early 2004. ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

Astronomy Department was found in Kyiv University in 1834 together with other twelve departments of the Faculty of Philosophy. ... At that time V.Struve was a World famous astronom, and helped V.Fedorov in creation of Kyiv University Astronomical Observatory. ... M.Khandrikov successfuly modernized the Observatory. ... Researches of the history of Kyiv Observatory say about an important contribution into development of orbits theory made by the famous Kyiv astronoms I.Illinsky and I.Putilin. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Sky Guide . ... GRBs result of stellar swaps . ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email...

... Dept. for Physics of Stars&Galaxies . ... 2016,MNRAS, 2016MNRAS.tmp.. ... 1999 - detection and classification of quasiperiodical variations of intensity in spectral lines of comet Halley . ... Borysenko S.A., Nazarchuk H.K., Shulman L.M. Time variations of some lines in comet Halley spectra and investigation of their correlations.- ... Borysenko S.A. Variations of selected lines in the Comet Halley spectrum.- ... Borysenko S.A., Nazarchuk H.K., Shulman L.M. Fast variations of spectra of Comet Halley...

. The XMM-Newton website has moved to the following location: . http://www.cosmos.esa.int/web/xmm-newton

... 2008 January 15 . Double Supernova Remnants DEM L316 . ... Explanation: Are these two supernova shells related? To help find out, the 8-meter Gemini Telescope located high atop a mountain in Chile was pointed at the unusual, huge, double-lobed cloud dubbed DEM L316 . ... In particular, the smaller shell appears to be the result of Type Ia supernova where a white dwarf exploded, while the larger shell appears to be the result of a Type II supernova where a massive normal star exploded. ...