... The stars examined here were primarily culled from two lists of X--ray sources in Orion. ... The second region is two degrees in extent east--west and ten degrees north--south with Orionis being near the northern edge. ... In the end, two main regions were chosen for monitoring: stars near Orionis and stars northwest of the belt of Orion. ... The PSPC identified 22 sources within 15 of Orionis in addition to the sources listed in Table 1 , giving a total of 85 X--ray sources in the Orionis region. ...

... Flux density at 1 GHz (/Jy): 8? ... X-ray: Pulsar wind nebula. Point sources: Pulsar near edge, with wind nebula. ... ADS . ... 1994, ApJ, 437, 781. VLA at 330 MHz (56"?111": S=10.6 Jy) and 1.4 GHz (22"?27") near pulsar. ... ROSAT of pulsar, and limit for remnant. ... VLA at 1.4, 4.9 and 8.5 GHz (25") of pulsar wind nebula. ... 2002, ApJ, 567, L125. Pulsar x-ray detection. ... ATCA at 1.4 GHz (70"?47") including polarisation, and Chandra observations of pulsar wind nebula. ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . They are an astronomy shop in Southeastern Pennsylvania, representing Meade, Celestron, TeleVue, Orion, Vixen, Takahashi, Stellarvue, and many other accessory lines. Last Update December 08, 2007 . Listed Since December 08, 2007 . ... 610) 327-3500 . ... 610) 327-3553 . Web Site . ... Web . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

To query the STIS PSF library you must supply one or more input parameters. ... As most of these files are in the form of multiextension fits files, many imaging viewing tools will be unable to open them. ... For most images we supply STIS colors in STMAG units. ... A given PSF will have at most one of these color values defined. ... Specify an upper and a lower limit to select images in a particular B-V color range. Enter an upper and a lower value for the peak fitted DN value. ...

... Papers . ... Sesana, Vecchio, Colacino (2008), The stochastic gravitational-wave background from massive black hole binary systems: implications for observations with Pulsar Timing Arrays . van Haasteren, Rutger; Levin, Yuri; McDonald, Patrick; Lu, Tingting (2008), On measuring the gravitational-wave background using Pulsar Timing Arrays . ... 2006), Upper Bounds on the Low-Frequency Stochastic Gravitational Wave Background from Pulsar Timing Observations: Current Limits and Future Prospects . ...

... were entered in the atlas. ... In so doing lines were selected which yielded radial velocities close to the symbiotic velocity of MWC 560 (+35 km/s). ... The visible spectrum of MWC 560 is poor in absorption lines especially near the brightness maximum. In our atlas are visible only the blue-shifted components of , , NaI and FeII(42), interstellar lines NaI, a few diffuse interstellar bands (DIB) and telluric lines of and and, at length, traces of the spectra of the M giant. ...

... 88, Jan. 1983, p. 1-15. l. A survey of extragalactic radio sources made using driven declination scans is reported covering an area of about 0.07 sr to a limiting flux density of 35 mJy. The fast-scan survey was carried out at a galactic latitude greater than 17 deg with the NRAO 91-m telescope operating at 4.755 GHz, and the 480 sources detected were reobserved at 1.4 GHz with the National Astronomy and Ionosphere Center 305-m telescope at Arecibo. ...

Electronic access is now available for all ASP Conference Series Volumes. View the current list available on this page or browse the e-Book Access site . ... Vol 1-218 . ... Vol 219+ . ... Purchase the printed volume, which includes free electronic access. ... Vol. ... Print ISBN: 0-937707-88-0 . e-Book ISBN: 978-1-58381-405-5 . ... e-Book ISBN: 978-1-58381-404-8 . ... e-Book ISBN: 978-1-58381-403-1 . ... CLOUDS, CORES, AND LOW MASS STARS: The Fourth Haystack Observatory Conference . ...

... 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. ...

... The task accepts two sources lists: the observation source list and the exposure source list. ... List of selected sources. This le contains a table, called SRCLIST, with the following columns: Name Type Description SRC NUM Integer Source ID from observation source list RA Double RA from exposure source list DEC Double Declination from expoure source list RATE Real Count rate from observation source list COUNTS Real Number of source counts, from exposure source ...

... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

. July 1, 2002 - June 30, 2003 . July 1, 2001 - June 30, 2002 . July 1, 2000 - June 30, 2001 . July 1, 1999 - June 30, 2000 . July 1, 1998 - June 30, 1999 . July 1, 1997 - June 30, 1998 . July 1, 1996 - June 30, 1997 . July 1, 1995 - June 30, 1996 . July 1, 1994 - June 30, 1995 . July 1, 1993 - June 30, 1994 . July 1, 1992 - June 30, 1993 . blewis@naic.edu . last updated: 27 July 2002 .

NEA discoveries made with the U. K. Schmidt by the AANEAS project (1990-96) Status as at 2010 Sep 14 Atens Designation q Q a e i H opps Date last obs 1994 XL1 0.318 1.024 0.671 0.526 28.2 20.9 2 413 2005 Nov. ... 20 PHA 0.012 (152561) 1991 RB 0.748 2.161 1.454 0.486 19.6 19.0 4 413 2006 Feb. 25 PHA 0.038 (85236) 1993 KH 0.850 1.618 1.234 0.311 12.8 18.6 7 413 2008 Dec. 28 PHA 0.002 (65690) 1991 DG 0.909 1.945 1.427 0.363 11.2 19.1 7 413 2008 Sept. ...

... HST view from 1990 788k tiff ; 12k jpg . edge-on rings (HST) 33k jpg ; 86k gif ( caption ) . nearly edge-on rings (HST) 36k jpg ; 86k gif ( caption ) . ... False-color view of Saturn 332k gif ; 61k jpg . ... Saturn (three color -red,green,blue- composite) by HST (670 km per pixel) 71k gif ; 39k jpg . ... Ring spokes (false color) 204k gif . ... Edge-on rings and four moons from HST (August 95) 24k jpg ; 108k gif ( caption ) . ... Spectacular false color image of the rings 130k jpg . ...

... HST view from 1990 788k tiff ; 12k jpg . edge-on rings (HST) 33k jpg ; 86k gif ( caption ) . nearly edge-on rings (HST) 36k jpg ; 86k gif ( caption ) . ... False-color view of Saturn 332k gif ; 61k jpg . ... Saturn (three color -red,green,blue- composite) by HST (670 km per pixel) 71k gif ; 39k jpg . ... Ring spokes (false color) 204k gif . ... Edge-on rings and four moons from HST (August 95) 24k jpg ; 108k gif ( caption ) . ... Spectacular false color image of the rings 130k jpg . ...

... 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 . ...

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...

. FILES WITH STATISTICS PER DAYS . 1957 . 1958 . 1959 . 1960 . 1961 . 1962 . 1963 . 1964 . 1965 . 1966 . 1967 . 1968 . 1969 . 1970 . 1971 . 1972 . 1973 . 1974 . 1975 . 1976 . 1977 . 1978 . 1979 . 1980 . 1981 . 1982 . 1983 . 1984 . 1985 . 1986 . 1987 . 1988 . 1989 . 1990 . 1991 . 1992 . 1993 . 1994 . 1995 . 1996 . 1997 . 1957-1997 (zip-archive)

... V.V.Makarov, V.P.Reshetnikov, V.A.Yakovleva . Photometric study of the peculiar galaxy NGC 2685" . ... eds.), Tallinn, 1989, p.19 . ... Press, 1994, p.272-273 . ... A.A.Mullari, V.V.Orlov, St.Petersburg Univ. ... conference, St.Petersburg, 1997, p.168-169 . ... All-Russian Astronomical Conference, Book of Abstracts, . ... in "Astronomy: traditions, present, future", V.V.Orlov, V.P.Reshetnikov, N.Ya.Sotnikova (eds.), St.Petersburg University Press, 2007, p.92-115 (in Russian) . ...

... We present a new method for visualizing flux variations in X-ray images. ... The time variability image so constructed visually shows area where strong time variation occurred. ... Figure 1. shows the intensity (left) and time variability (right) image of the ROSAT field centered on the X-ray source MKW 3. ... The corresponding time variability image is shown to the right. ... These examples clearly show the power of the method described in evidencing variable sources in crowded X-ray images. ...