We present extinction curves that include data down to far-ultraviolet wavelengths (FUV; 1050-1200 У?) for nine Galactic sight lines. The FUV extinction was measured using data from the Far Ultraviolet Spectroscopic Explorer. The sight lines were chosen for their unusual extinction properties in the infrared through the ultraviolet; that they probe a wide range of dust environments is evidenced by the large spread in their measured ratios of total to selective extinction, RV=2.43-3.81. ...
December 1, 1999 Prof. Burton Richter, Director Emeritus, SLAC . ... Physics Colloquium . Condensed Matter Seminars . Theoretical Science Seminars . ... The lecture will summarize some of the new information in high energy physics that impacts our understanding of the basic structure of matter and evolution of the early universe. ... Professor Richter's talk will be aimed at a general science audience. 4:00pm, 100 Willamette Hall . return to top . ... 4:00pm, 318 Willamette Hall . ...
... Программа izmccd предназначена для высокоточной астрометрической обработки числовых изображений небесных объектов. ... Меню - "Вычисление/Медианный фильтр", либо 12-я кнопка на 2-й панели инструментов. ... телескопа был отснят большой участок неба. а) Копируете все изображения в одну папку. б) Вызываете функцию - меню "Вычисление/Автомат. обработка ", либо 8-я кнопка на 2-й панели инструментов. в) Отмечаете "Определять координаты известных объектов в поле зрения". ... Mx= 0.95100 // "/pix . ...
... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualitГїs . ... Accueil Lire/Voir/Ecouter Lire/Voire/Ecouter . ... Lire/Voir/Ecouter . ... Dans quelques semaines, le plus cГїlГЕbre des lanceurs russes devrait prendre la route de l'espace depuis la Guyane. ... La trajectoire d'une pierre ou d'une lance est gnoquable" , mais hГїlas pour les vulgarisateurs contemporains, un espace-temps Г 10 dimensions ne l'est plus, pas davantage que l'horizon des ГїvГїnements d'un trou noir. ...
... One promising puzzle piece for confirming dark matter now seems unlikely fit . ... Researchers with the Kavli Institute for Particle Astrophysics and Cosmology (KIPAC) at Stanford University in Palo Alto, California, are confirming the previous detection, and the excess seems to grow at higher energies in the spectrum, which is consistent with many theories about how dark matter might produce positrons. ... Only registered members of Astronomy.com are allowed to comment on this article. ...
... Archives . ... Like spherical cows , true blackbodies do not exist. ... black here simply refers to the property of the object where no wavelength is preferentially absorbed or emitted, and all the energy input to it is converted into radiation. ... The blackbody spectrum is . B_{\nu}(T) = \frac{2 h \nu^3}{c^2} \frac{1}{e^{h \nu / k_B T} ? ... The general shape of a blackbody spectrum is like a rising parabola at low ? ... Comment ( RSS ) | ... Chandra Blog . ... Entries (RSS) and Comments (RSS) . ...
... These included Katalin Olah (Konkoly Observatory , Budapest), Vacheslav Emel'yanenko (South Ural University , Chelyabinsk, Russia), Stan Owocki (Bartol Research Institute, University of Delaware, USA ), Fathi Namouni (Southwest Research Institute, Boulder, Colorado, USA ), Ramon Brasser (Turku, Finland), Stefan Dreizler ( University of T?bingen, Germany ), Youra Taroyan ( University of Sheffield), Tigran Khanzadyan (MPIA, Heidelberg, ...
... Cavendish . ... Cavendish/ESO . ... Institute of Astro- and Particle Physics, University of Innsbruck, Austria . ... University of Cambridge . ... Institute for Astronomy . ... Astronomical Institute of the Ruhr-University Bochum . ... Cavendish Astrophysics . ... Institute of Astronomy, Cambridge . ... Institute of Astronomy Astrophysics, Academia Sinica . ... University of Vienna, Institute of Astrophysics . ... Institute for Astronomy, University of Edinburgh . ... Cambridge University . ...
... public class CurveFitter . ... static int . ... Field Detail public static final int STRAIGHT_LINE . ... public static final int POLY2 . ... public static final int POLY3 . ... public static final int POLY4 . ... public static final int EXPONENTIAL . ... public static final int POWER . ... public static final int LOG . ... public static final int RODBARD . ... public static final int GAMMA_VARIATE . ... public static final int LOG2 . ... public static double f (int fit, double[] p, double x) . ...
... We present a computer program for modelling energy flux distribution and light curves of eclipsing binaries from far ultraviolet to infrared regions. The Roche model is assumed. Proximity effects of components (reflection of radiation and surface gravity darkening) are taken into account. ... Figure 1: The surface temperature distribution for Algol A-B system before (upper plot) and after (lower plot) correction for temperature due to the irradiation effect. ...
... In this vibrant, eye-opening tour of milestones in the history of our universe, Chris Impey guides us through space and time, leading us from the familiar sights of the night sky to the dazzlingly strange aftermath of the Big Bang. ... Cambridge 2010, ISBN: 978-0521180665, Paperback $28.99 . ... Finding the Big Bang . ... As a prelude the book traces the evolution of some of the notions of modern cosmology from the late Middle Ages up to the final acceptance of the concept of galaxies in 1925. ...
... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...
XEphem Forum Message . ... Post . ... Re: Catalog Conversion Utility . ... Post Message | ... the old versions and catalogs still exist on the german mirror: . ftp://iphcip1.physik.uni-mainz.de/pub/xephem_3.2/catalogs/ . An other xe to xe2 conversion utility is at: http://www.simg.de/xetoxe2.e.html (HP) . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
... Proposal Type: General Category: Observation Category: Time Requested this semester: Hours Next Semester: Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time: Expected Data Storage: Prop osal Title: ABSTRACT: Regular Pulsars 34 68 0 45 less than 100 GB Spectral Indices of Millisecond Pulsars Although millisecond pulsars (MSPs) are extremely important for several experiments, the spectra of these pulsars have not been measured often. ...
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Ссылки http://www.naic.edu/vscience/schedule/2015Fall/ShaifullahtagP2996.pdf -- 61.1 Кб -- 07.03.2015 Похожие документы
THE XMM-NEWTON ABC GUIDE AN INTRODUCTION TO XMM-NEWTON DATA ANALYSIS NASA/GSFC XMM-Newton Guest Observer Facility Steve Snowden, Stefan Immler, Michael Arida, Brendan Perry, Martin Still, and Ilana Harrus Version 2.01 23 July 2004 Copies of this guide are available in html, postscript and pdf formats. Contents 1 Intro duction 1.1 ACKNOWLEDGMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Us 2.1 2.2 2.3 2.4 2.5 2.6 2.7 eful Information and References MAIN WEB SITES . .
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Ссылки http://xmm.vilspa.esa.es/sas/6.5.0/documentation/xmm_abc_guide.pdf -- 1982.8 Кб -- 16.08.2005 Похожие документы
... It has been largely superceded by MatWeb . Conversion Factors . Material properties . Physical constants . Astronomical constants . This table gives conversion factors to convert various units to their SI equivalents. ... The units are SI. This is a short list of physical constants in SI units. ... Boltzmann constant . ... Gas constant . ... Mass . ... Plank's . ... Radiation constant . ... This is a short list of astronomical constants in SI units. ... Sun . ...
... Proximity e#ects of com ponents (reflection of radiation and surface gravity darkening) are taken into account. ... As an example, we consider the Algol (# Persei) system, where an eclipsing pair (Algol AB) is accompanied by the third component (Algol C). ... The surface temperature distribution for Algol AB system before (upper plot) and after (lower plot) correction for temperature due to the irradiation e#ect. ... We solve this equation by the iterative NewtonRaphson method. ...
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Ссылки http://www.stecf.org/conferences/adass/adassVII/reprints/polubekg.ps.gz -- 194.4 Кб -- 12.06.2006 Похожие документы
The Official Publication of the Amateur Astronomers Association of Princeton Director Ludy D'Angelo (609) 882-9336 Assistant Director Jeff Bernardis (609) 466-4238 jeffbernardis@gmail.com Treasurer Michael Mitrano (609)-737-6518 michael.mitrano@att.net Program Chairman John Church (609) 799-0723 j.church@mindspring.com Secretary Editors Larry Kane Bryan Hubbard and Michael Wright (609) ... At the last meeting of the year in June, we were gathered at the State Museum Planetarium in Trenton. ...
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Ссылки http://www.princetonastronomy.org/newsletters/07_2010sidereal.pdf -- 2826.3 Кб -- 22.07.2010 Похожие документы