... Abubekerov M.K., Lipunov V.M. "The Lower Temperature Limits Of Accretors" Astronomy Reports, 2003, Vol. 47, Issue 8, pp.679-684. ... Abubekerov M.K., Antokhina E.A., Cherepashchuk A.M. "The Masses of X-ray Pulsars in Binary systems with OB Supergiants" Astronomy Reports, 2004, Vol. ... Abubekerov M.K., Antokhina E.A., Cherepashchuk A.M., Shimanskii V.V. "The Mass of the Compact Object in the Low-Mass X-ray Binary 2S 0921-630" Astronomy Reports Astronomy Reports, 2006, Vol.50, Issue 7, pp.544-552. ...

... Home Observing Brooklyn Museum Plaza . ... Lecture Series 2014-2015 . ... Clear Sky Chart . ... This Month's Sky - 2015 . This Month's Sky - January 2015 . ... This Month's Sky - March 2015 . ... Brooklyn Museum Plaza . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

... Seminar archive . ... Type Ia Supernovae (SNe Ia) have an important role to measure a distance to an anonymous galaxy because they have a good correlation of the decline rates of the light curves with the absolute luminosity. ... First, super-Chandrasekhar SNe which have extremely high luminosity, slow decline rate of the light curves, slow expansion velocity and strong carbon features. ... As another example of diversity of SNe Ia, I would like also to introduce Type Iax SNe. ... All seminars: . ...

The most massive black holes in the nearby Universe seem to largely be hosted by massive central cluster galaxies. The ultra-massive black hole in NGC 1277, reported by van den Bosch et al. based on a stellar kinematic measurement, is an extreme outlier in this respect. NGC 1277 is not a central cluster galaxy, but a lenticular galaxy in the Perseus Cluster, at a distance of about 3.8 from the central cluster galaxy. ...

PRESS-RELEASE . ... At S.P.Korolev Rocket and Space Corporation Energia under the chairmanship of N.N. Sevastyanov, Corporation President, General Designer, took place the next session of the General Designer’s Review Board on the Russian Segment of the International Space Station (ISS). ... The Report on the status of Soyuz TMA-9 manned transport spacecraft launch processing (reporter: Yu.I.Grigoriev, RSC Energia Deputy General Designer, Director of Orbital Complex Programs); . ...

... The planets are still growing slowly as comets and meteoroids collide with them. ... In the 1950s, American astronomer Fred Whipple suggested that comets are dirty snowballs: clumps of ice mixed with interplanetary dust. ... For most of its orbit, a comet remains far from the Sun, little more than the dirty snowball that it is -- what is usually called a bare nucleus. ... As Comet Hyakutake approached the Sun, jets of dust erupted from the Sun-facing side of its nucleus. ...

... Liyong Liu (NAOC) . Site testing on seeing conditions of the astronomical observatories over China are briefly reviewed, including Xionglong station of NAOC, Gaomeigu station of Yunnan Observatory, Delingha station of Purple Mountain Observatory. ... PDF [3.0€аMB] October 8, 09:55 10:20 . ... In this paper, we will review the site survey activities in the past years, and present the site-testing results on the Oma site, including cloud cover, seeing, water vapor, transparency and sky brightness. ...

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

January 1999.01 . February 1999.02 . March 1999.03 . April 1999.04 . May 1999.05 . June 1999.06 . July 1999.07 . August 1999.08 . September 1999.09 . October 1999.10 . November 1999.11 . December 1999.12 . ... Musical Kp diagram 1999 (*.pdf) ...

. Last registration to attend . August 1 . Submission of abstracts (0.5p) . September 1 . Schedule of the Symposium . September 15 . The day of arrival . October 15 . Invited reviews and reports . October 16-19 . The day of departure . October 20 . Submission of contibutions (4pp) . November 1 .

National Aeronautics and Space Administration . ... She completed training at the Naval Diving and Salvage Training Center in Panama City, Florida as a Navy Basic Diving Officer and Salvage Officer. ... Captain Heide Stefanyshyn-Piper retired from NASA in July 2009 to return to the U.S. Navy at the Naval Sea Systems Command in Washington D.C. SPACE FLIGHT EXPERIENCE: STS-115 Atlantis (September 9-21, 2006) successfully restarted assembly of the International Space Station. ... JULY 2009 ...

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

Statistics of sunspot activity . The sunspot indices . ... The solar regions . ... 2015 . ... November . ... November, 2015 . Visual indices of solar activity by author's observations . ... Average . ... 0.00 . ...

... We compare our results with the GRANAT X-ray observations of the Galactic center (Churazov et al. ... It is instructive to compare our results for the Galactic center starburst with what might be expected for a continuous star formation, with the average rate characteristic for the whole Galaxy. For this continuous star formation model, we would expect to observe in the region of around the Galactic center about 10% of the total number of X-ray sources in the Galaxy. ...

... 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. ...

XMM-Newton SAS Scientific Validation and Data . ... the level of accuracy associated with those products The outcome of the SAS science validation for each test dataset is summarized in a report, available along with the dataset. ... The Scientific Validation Report v2.1(.ps.gz) is available for the SAS v6.5 Scientific Validation SAS v6.5 Scientific Validation Preliminary Report . The Preliminary Report (.ps.gz) is still available for SAS v6.5 Scientific Validation SAS v6.0 Scientific Validation . ...

... Shustov B.M., Wiebe D.S. Dust expelling from the Galaxy ( abstract from the journal ). Astronomy Reports , 1995, 39 , 578-586 [AZh, 72 , 650-659]. Wiebe D.S., Shematovich V.I., Shustov B.M. Chemical and dynamical evolution of protostellar clouds: initial stages of collapse ( abstract from the journal ). ... Shustov B.M., Wiebe D.S., Tutukov A.V. Evolution of disk galaxies and loss of heavy elements into the intracluster medium. ... ApJ (Letters), 1998, 503 , L71-L74 ( astro-ph/9806155 ). ...

MINUTES of the RadioAstron Teleconference on June 24, 2008 N. Kardashev chaired the teleconference. ... Agenda of the RadioAstron teleconference June 24, 2008 (16:00 UT) 1 2 3 4 5 6 6 7 Corrections to the Agenda and introductory notes on the status of the RadioAstron mission RadioAstron project status and progress Pushchino tracking station (TS) Pre-launch ground VLBI observations in Russia Compatibility of recording systems Results and prospect of the MFS DSN VLBI test ...