BIB-VERSION:: AST-PP-v1.0 ID:: epreps.stsci//prep1201 ENTRY:: March 9, 1998 TITLE:: Broad Emission-Line Variability as a Constraint upon the Physical Conditions within the BLR of NGC nbsp ;5548 SUBTITLE:: AUTHOR:: Goad, Mike AUTHOR:: Koratkar, Anuradha AFFIL:: Space Telescope Science Institute 3700 San Martin Drive Baltimore, MD 21218 USA DATE:: December 1997 JOURNAL:: To appear in: The Astrophysical Journal SUBMITTED:: 17 March 1997 ACCEPTED:: 14 October ...

For solar wind dials without any explanatory text, see this page . ... There are three logs, one for each condition index ( K P , Solar Wind ,and NOAA/SEC .) ... More about the solar wind's recent behavior can be found on my Current Solar Wind Conditions page. ... Other items of interest include NOAA/SEC Current Conditions , my composite current Auroral Images page, Windows on the Universe: Space Weather , and Public Outreach Index, Department of Space Physics and Astronomy, Rice University . ...

... While the resultant gains probably track the phase during the calibrator scan, what we are really interested in are the antenna gains for the program source. If you solved for a number of time intervals during the calibrator scan, the best guess at the antenna gains for the program source is derived by interpolating between some average of the calibrator scan gains. ... The task gpaver can be used to perform averaging of antenna gains. ... Average the gain table for the program source . ...

Next: Equations of condition Up: Extinction and transformation Previous: Extinction and transformation . Bias can also be introduced by improper fitting procedures. For example, the reduction program known as SNOPY, used for many years at La Silla and also at La Palma, uses a simple iterative technique in which some subsets of the parameters are solved for, while others are held fixed; then the ones last solved for are held fixed, while the ones previously fixed are redetermined. ...

Next: Participant List . ... Table of Contents - Index . Cover Illustration: This figure, from the paper by Gary Ferland, Kirk Korista, and Dima Verner , summarizes the results of thousands of complete spectral synthesis calculations performed with the Cloudy program. ... These calculations show that this line-one of the strongest quasar emission lines-is produced efficiently only over a narrow range of physical conditions. ...

... Product details: . ... 2 Composition/Data on components: . ... Information pertaining to particular dangers for man and environment . ... 4 First aid measures . ... Use fire fighting measures that suit the surrounding fire. ... Measures for environmental protection: . ... This information is furnished without warranty, and any use of the product not in conformance with this Material Safety Data Sheet, or in combination with any other product or process, is the responsibility of the user. ...

... Operating at a wavelength of 10 ?m, it produces a 135њx135њ image with a resolution of 0.9њ. ... The clouds move from the west-southwest. ... At the same time as the IR images, visible light images were taken with an Apple Computer QuickTake electronic camera. ... At 1540 MDT, the large central cloud is visible in both images. At 1544 MDT, a distinctive cloud is apparent near the center in the visible image and right of center in the IR. The performance of the SDSS cloud scanner is excellent. ...

... A Dangerous Sunrise on Gliese 876d . ... On planet Gliese 876d, sunrises might be dangerous. ... Last Sunday's bright fireball meteor falling through skies over California and Nevada produced sonic booms over a broad area around 7:21 am. ... Jupiter and the Moons of Earth . ... Planet Earth has many moons. ... Captured from Stuttgart, Germany last Sunday, the frame also includes Earth's largest natural satellite 1.5 days after its New Moon phase. ... Rosetta Approaches Asteroid Lutitea . ...

Detection technique . We are using ISIS , the optimal image subtraction method developed by C. Alard & R.H. Lupton, to search for SNe in our images. ... The second image shows the same subtraction, but after the convolution of the best image with ISIS: . ... For this reason, we are suggested to search for nuclear SNe with NICMOS on HST, to exploit its stable PSF, sensitivity and angular resolution to detect from space nuclear obscured SNe which might have been missed by ground-based surveys. ...

Masses of some binary asteroids obtained by the dynamical method . ... The method of regularization of A.N. Tikhonov was used in this paper along with the least squares method on a stage of solution of the ill-conditioned systems of linear equations to determine masses of asteroids by the dynamical method. ... For these asteroid values of their masses were obtained by other authors using observations of satellites. ... binary asteroid, mass of asteroid, dynamical method. ...

Lessons learned from the Thirty Meter Telescope site testing Tony Travouillon Sebastian Els, Angel Otarola, Reed Riddle, Matthias Schoeck, Warren Skidmore TMT.XXX.PRE.05.0XX.DRF01 1 Introduction TMT and its Site testing. Important choice before going on site. ... Considerations during analysis of the data. TMT.XXX.PRE.05.0XX.DRF01 2 Some Background about the TMT Site Testing TMT is a 30m, segmented, RitcheyChretien telescope design. ... ASCA Cloud Cover Analysis So how do we do it in practice? ...

The ESA/ESO Astronomy Exercise Series 2 . The Distance to Messier 100 as Determined by Cepheid Variable Stars . ... The small variations in distance to the individual Cepheid variable stars in the Cloud are negligible compared with the much larger distance to the SMC. ... In this way Cepheid variable stars can be used as one of the 'standard candles' in the Universe that act either as distance indicators themselves or can be used to calibrate (or set the zero point for) other distance indicators. ...

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. ...

Data package . 079.D-0645A / 2007-05-15 . ... HELP . ... Data package cover sheet . This page is the portal to your data package. Any questions about these data should be sent to ESO's User Support Department (usd-help@eso.org). ... The following links help you to navigate and understand its content and its structure: . ... this is the version applicable to your package; the version on the web may have evolved in the meantime) . ... archive file list . ... archive . ...

... Space Research Institute . Main . ... Main research and development work completed in 2012 and ready for implementation . ... Main research and development work completed in 2011 and ready for implementation . Main research and development work completed in 2010 and ready for implementation . Main research and development work completed in 2009 and ready for implementation . Main research and development work completed in 2008 and ready for implementation ...

... Determining the nominal roll angle for stable intervals . ... We found the necessary information in a file 'rh*.ao', which has a binary extension table for each obi. ... Unlike the question of determining the nominal roll angle, we know of no a priori indication of this problem (although the guide star configuration may be the cause, or at least associated with this condition): it is necessary to examine the source position for each obi. ... The guide star record is at the end of the 'anc file'. ...

... The chemically peculiar star HD965 belongs to a rare type of very slow rotators. As far back as in the 90s, G.Mathys (ESO, Chile) supposed its extremely slow rotation as observing split Zeeman components in the spectrum, from which he measured the magnetic field on its surface. Field variation proved to be very slow, and G.Mathys determined that the variability period should be longer than two years. ... Up to now, only two stars with periods longer than 20 years are known. ...

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 . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . The more we explore our Galaxy the more difficult it becomes to find static initial states. This leads us to study molecular clouds as dynamic in which initial conditions are neither prescribed or necessary. And this leads us to a new emerging paradigm which solves many of the nagging problems of the last two decades. The birth of stars is regulated by supersonic turbulence and its interplay with gravity. ...

. Russian (WIN) . 10-27/2/1999 . 6-28/1/1999 . For more information send a mail to: info@sputnik.infospace.ru . © 1998-2002 SMIS IKI RAN and SRC "PLANETA" Moscow, Russia.