Astronomy Articles . Articles | ... Moon | ... Astronomy Binoculars - The Skies The Limit - by Scott Gray, September 2006 . ... Astronomy Terms - To Help You Study The Universe - by Scott Gray, October 2006 . ... Himalia is the only moon other than Europa, Ganymeade, Callisto and IO visible with small telescopes. ... The Harvest Moon refers to the Full Moon that comes closest to the autumnal equinox, or the first day of autumn. ... Think the study of stars is best left to professional astronomers? ...

Next: Ejectors in Massive Binary Previous: Artificial Galaxy: Full Matrix . The first version of the Scenario Machine was aimed especially at the simulation of massive binary star evolution. ... First, there is a large class of intermediate mass binaries (say, consisting initially of 8 + 5 solar masses) that can also produce NS and thus lead to the formation of a bright X-ray source. ... Next: Ejectors in Massive Binary Previous: Artificial Galaxy: Full Matrix Mike E. Prokhorov . ...

... Measurement of the MASS detectors parameters with mass program January 24, 2015 [112707] . MASS/DIMM electronics. ... Turbina-core(D): Dimm User Guide. ... N.Shatsky, V.Kornilov, The revision of the MASS/DIMM star catalogue. ... О.Возякова, В.Корнилов, Н.Шатский, Новое программное обеспечение прибора MASS/DIMM. ... V.Kornilov, N.Shatsky, S.Potanin, O.Voziakova, B.Safonov Preliminary results of astroclimate parameters measurements at the Sternberg 2.5m telescope installation site. ...

... One of this year's largest mass ejections from the Sun's atmosphere was recorded last Sunday by TESIS telescopes aboard the CORONAS-PHOTON satellite ( video - wmv 4.3 MB ). ... Over the course of a week, two gigantic solar prominences were simultaneously ejected from the surface of the Sun. ... Earth will not feel the Sun's influence either. ... The TESIS observatory ї TESIS: www.tesis.lebedev.ru . ... One of this year's largest mass ejections from the Sun's atmosphere (movie WMV, 4.3 MB) . ...

ARCSAT ID NUMBER: AS01 DESCRIPTIVE TITLE: Massive emission-line stars PI: John Wisniewski OBSERVER(S): John Wisniewski, Jamie Lomax, Evan Rich UNCERTIFIED/UNTRAINED OBSERVERS: COLLABORATORS: CONTACT INFORMATION: wisniewski@ou.edu; 206-427-0184 NUMBER OF WEEKS REQUESTED: 2 TIME REQUESTED: We request 1 week in August and 1 week in September; optimally these should be separated by at least 4-5 weeks. If only 1 week is available, we'd prefer time in September. ...

... St Petersburg 23, September 2014 1 Motivation · Origin of Martian moons? ... Considered error sources: ­ Phobos a priori ephemerides; ­ Phobos a priori GM value; ­ measurements noise; ­ different strategies; · Methods: ­ real data analysis; ­ simulations. ... St Petersburg 23, September 2014 8 Simulations: sensitivity of the measurements to the a priori GM value Simulations: zero noise+ IMCCE a priori ephemerides +GMPH = 7.16 * 105 m3/sec2. ... St Petersburg 23, September 2014 14 Thank you! ...

Large sunspots were occasionally seen far in the past without any instruments, when the sun was dimmed by thick haze, but not much was remembered of those observations. ... Sunspot Cycle (1850 - 1975) . One who was greatly influenced by Schwabe's discovery was an English gentleman of independent means, Richard Christopher Carrington , who devoted himself to the study of sunspots. ... Carrington had seen a flare, of the rare variety that is visible in white light (only about 50 are known). ...

Next: A candidate young galaxy? Up: Results and discussion Previous: Current star formation rate . The integrated H I line flux, the characteristic widths of 21 cm line profile W 50 and W 20 (for a Hanning smoothing of 10.6 km s -1 ), and the derived H I mass for HS 0822+3542 are presented in Table 1 . The small H I mass 2.4 of this galaxy is consistent with its low optical luminosity. ... A rough estimation can be made also on the dynamical mass of HS 0822+3542. ...

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

... Events . ... The Event Horizon Telescope: Observing Black Holes with Schwarzschild-Radius Resolution . ... Galaxy lies a super massive black hole - 4 million times more massive . ... Universe to spatially resolve and image a black hole Event Horizon. ... For the much more massive (6 billion solar mass) black hole . ... for assembling a submm-VLBI Event Horizon Telescope. ... emission near the event horizon of super massive black holes. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Альтернативный форум . ... Abramyan G.L. (@) - 10.01.2007 01:10 . Astronomers Create 3D Map of Dark Matter Space.com 07 January 2007 01:37 pm ET . ... Re: Astronomers Create 3D Map of Dark Matter Space.com 07 January 2007 01:37 pm ET Котофеич, 10.01.2007 13:55 . Re: Astronomers Create 3D Map of Dark Matter Space.com 07 January 2007 01:37 pm ET Анатолий Рыков, 10.01.2007 11:20 . ... Astronomers Create 3D Map of Dark Matter Space.com 07 January 2007 01:37 pm ET Abramyan G.L., 10.01.2007 01:10 . ...

... The RAS Meteorite Collection: State on the 1 st of June, 1999 . ... About the laboratory . ... Chondrite . ... Fall 15 April 1857. One mass of about 3 kg . ... Turkmenia, Chardgou region . ... One mass of 71.6 g . ... One mass of 1912 g . ... One mass of 841.6 g . ... Fall 13 September 1937. 15 masses totaling more than 210 kg . ... One mass of 1540 g . ... One mass of 11.335 kg . ... One mass of 2904 g. 2853 g . ... One mass of 115 g . ... One mass of 2788 g . ... One mass of 135 kg . ...

The black hole. ... The black holes are generated in the result of a collapse of giant stars with the mass more than three Sun's masses. ... And moreover the gas near the neutron star or the black hole will get hot and will become a source of high energetic electromagnetic radiation in X-rays and gamma range. ... In the majority of double systems, being the sources of X-rays radiation, the invisible component mass does not exceed the two solar masses, so it is a neutron star. ...

Determination of mass of Jupiter and that of some minor planets from observations of minor planets moving in 2:1 commensurability with Jupiter Olga M. Ko chetova and Yulija A. Chernetenko Institute of Applied Astronomy, St. Petersburg, Russia September 19, 2000 Keywords: Jupiter 's mass , asteroid's masses , observations of minor planets Great numb er of observations of minor ... Hoffmann (1989) p ointed out the fruitfull of that approach. ... Table II. ...

IV International Astronomy Olympiad . ... Text of these problems is available also . ... To solve every problem you may use constants and well-known values you know by heart. ... The apparent diameter of the Moon, as seen from the Earth, is 31'. ... Can you observe a star with magnitude . ... Consider the stars as black bodies. ... Estimate the diameter of a black hole constructed using this patent from a ship with the mass of 5000 tn (1 tn = 1000 kg). ... What stars would you observe this nigth? ...

Shakht N.A., A.A.Afanas'eva, D.L. Gorshanov, E. V.Poliakow (Pulkovo Observatory, Russia): Title: Long-term photographic observations for selected objects of Pulkovo program: measurements and results. Abstract: The selected objects, observed at Pulkovo observatory during long time period have been of intense interest among astronomers, and now they are the most important aims for space investigations. ... Now we believe, that they also are interesting for observation during space mission Gaia. ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 05 - 11.09.2011, Forecast on 12 - 19.09.2011, Carrington Rotation 2114 (26,45.08.2011) SOLAR SUNSPOT ACTIVITY OF THE SUN OF THE LAST PERIOD KEPT AT THE AVERAGE LEVEL. ... FLARE ACTIVITY WAS ON AN HIGH LEVEL 6-8 SEPTEMBER WHEN IN SMALL ACTIVE REGION AR11283 (N14L227, Sp max = 230 m. д.п.) TO THE COMPLEX MAGNETIC CONFIGURATION THERE WERE 4 LARGE FLARES, AT THE AVERAGE LEVEL - 5, AND 9-10th SEPTEMBER, ON A LOW LEVEL - 11.09. ...

. To see a Russian version of this page click here . (Senior Researcher. Graduated from Moscow State University (MSU) in 1982, Ph.D. 1986, MSU) . A member of EAS and IAU. Fields of interest: hot massive stars, close binary systems: optical photometric and spectral observations, X-ray observations; ill-posed problems, X-ray astrophysics. My publications (ADS link) . Linux on CLEVO 8750 (old stuff) . Phones/addresses of my university mates graduated in 1982. E-mail: igor@sai.msu.ru .