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7341. http://hea-www.harvard.edu/PINTofALE/pro/starflux.pro
... SURE THAT THE OUTPUT UNITS MAKE SENSE! ; ******************************************************************* ; ;parameters ; lstr [ INPUT ; required] structure containing line emissivity data ; (see RD_LINE or RD_LIST) ; * BEWARE: ion balance is assumed to be included! ; cstr [ INPUT ; required] structure containing continuum emissivities ; (see RD_CONT) ; ;keywords ; tlog [ ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/pro/starflux.pro -- 10.1 Кб -- 19.12.2000
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7342. http://hea-www.harvard.edu/PINTofALE/pro/pottasch.pro
function pottasch, emis , logt ,z=z, ion = ion , level = level , wdth = wdth , trange = trange ,$ _extra=e ;+ ;function pottasch ; returns the Pottasch factor that is a measure of the width of ; the ion emissivity in temperature space over which most of ; the line emission occurs. ; ; the Pottasch factor is the ratio ; {\int [ EMIS * ION _BALANCE] dlogT}/{ WDTH *max([ EMIS * ION _BALANCE])} ; where ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/pro/pottasch.pro -- 5.0 Кб -- 19.12.2000
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7343. http://hea-www.harvard.edu/~pgreen/PrenHall/ADT.pdf
June 21, 1999 Version 2.0 Introductory Astronomy Survey 1. ... When the Moon appears to completely cover the Sun (an eclipse), the Moon must be at which phase? ... PLEASE TURN THE PAGE ©1999 The Collaboration for Astronomy Education Research (CAER) 1 June 21, 1999 Version 2.0 7. ... A. Leo C. Gemini E. Pisces B. Cancer D. Taurus Sun Gemini Cancer Leo East South Taurus Pisces West PLEASE TURN THE PAGE ©1999 The Collaboration for Astronomy Education Research (CAER) 2 June 21, 1999 Version 2.0 11. ...
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Ссылки http://hea-www.harvard.edu/~pgreen/PrenHall/ADT.pdf -- 78.4 Кб -- 10.12.2000
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7344. http://hea-www.harvard.edu/~pgreen/PrenHall/ct_sunbh.pdf
Sun Earth Solar mass black hole Earth
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Ссылки http://hea-www.harvard.edu/~pgreen/PrenHall/ct_sunbh.pdf -- 4.6 Кб -- 10.12.2000
[ Текст ] Ссылки http://hea-www.harvard.edu/~pgreen/PrenHall/ct_sunbh.ps -- 4.6 Кб -- 10.12.2000
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[ Текст ] Ссылки http://hea-www.harvard.edu/~pgreen/PrenHall/ct_sunbh.ps -- 4.6 Кб -- 10.12.2000
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7345. http://hea-www.harvard.edu/~pgreen/PrenHall/earthmoon.txt
... The Earth's surface receives more light per unit area. ... The Earth is closer to the Sun. ... At what time does the Third Quarter Moon rise? a) 9:00 AM b) 12:00 Noon c) 9:00 PM $d) 12:00 Midnight When the moon is in its last quarter , when does it rise and set? a) sunrise, sunset b) sunset, sunrise $c) midnight, noon d) noon, midnight Why don't lunar eclipses happen at every full moon ? $a) The Moon 's orbit doesn't always take it through the Earth's shadow. b) The Moon 's ...
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Ссылки http://hea-www.harvard.edu/~pgreen/PrenHall/earthmoon.txt -- 10.9 Кб -- 10.12.2000
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7346. http://hea-www.harvard.edu/~pgreen/PrenHall/Concep0.txt
TOPCIS TREATED IN CONCEPTESTS GOALS FOR CONCEPTESTS ConcepTest questions differ from written exam questions in several ways. 1) As the name suggests, concepts, not memory, should be tested. ... ConcepTests can be also be used as thought-provokers rather than evaluation tools, as generators of interest and excitement rather than as part of a lecture pacing feedback loop. There are some topics of universal, almost philosophical interest to students. Is there life in the universe? ...
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Ссылки http://hea-www.harvard.edu/~pgreen/PrenHall/Concep0.txt -- 3.5 Кб -- 10.12.2000
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7347. http://hea-www.harvard.edu/~pgreen/PrenHall/TOC1.txt
... CONCEPTESTS Creating ConcepTests The Night Sky, and the Celestial Sphere Time and Seasons Magnitudes Distances Telescopes History Motion and Force The Elements Radiation, The Electromagnetic Spectrum The Earth Moon Planets, Asteroids, and Comets The Sun Stellar Properties Star Formation Energy Generation in Stars Stellar Evolution Binary Star Systems Stellar Motions and Kinematics Our Galaxy: Structure, ...
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Ссылки http://hea-www.harvard.edu/~pgreen/PrenHall/TOC1.txt -- 2.3 Кб -- 10.12.2000
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7348. http://hea-www.harvard.edu/~pgreen/educ/figs/wavemodel.ps
Wave Model for light Electromagnetic Wave What Happens to the Wave When it Encounters the Small Opening? ... Diffraction: Bending of light when it passes around a sharp obstacle or through a narrow slit. ... Constructive interference occurs when waves reinforce each other (as at point A above). ... Diffraction Grating has many narrow "slits". ... Both light waves arrive in phase. ... If light waves 1 and 2 arrive at the eye in phase (constructive interference), then you see a bright reflection. ...
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Ссылки http://hea-www.harvard.edu/~pgreen/educ/figs/wavemodel.ps -- 2026.2 Кб -- 30.11.2000
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7349. http://hea-www.harvard.edu/CHAMP/PUBLICATIONS/ChaMP_NEWFA.ps
... VOLUME**, **PUBLICATION YEAR** **EDITORS** The Chandra Multiwavelength Project (ChaMP): a serendipitous survey with Chandra archival data. ... We estimate the survey will cover ё 5 sq.deg. per year to Xray fluxes (2\Gamma10 keV) in the range 10 \Gamma13 \Gamma 6 \Theta 10 \Gamma16 erg cm \Gamma2 s \Gamma1 discovering ё2000 new Xray sources, ё 80% of which are ex pected to be active galactic nuclei (AGN). ... 2000). ... 4 ACIS chips and fields containing bright optical or Xray sources covering ?...
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Ссылки http://hea-www.harvard.edu/CHAMP/PUBLICATIONS/ChaMP_NEWFA.ps -- 969.0 Кб -- 15.11.2000
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7350. http://hea-www.harvard.edu/PINTofALE/papers/kgd_MM_head32_4217.ps.gz
GJ 205 Other Names HD 36395 / Wolf 1453 (RA, Dec) 2000 (05:31:24.85, 03:38:53.4) (l II b II ) (206.93, 19.45) Spectral Type dM1.5 Distance 5.7 pc m V 7 m :98 B \Gamma V 1.5 [m=H] 0.5 ROSAT/PSPC 0.19 cts s \Gamma1 EUVE /DS 0.02 cts s \Gamma1 EUVE Observation Jan/Feb 1997 [394.1 ks] GJ 411 Other Names HD 95735 / SAO 62377 (RA, Dec) 2000 (11:03:22.58, +36:02:09.6) (l II b II ... The line strengths were computed using a solartype Active Region DEM and a Quiet Sun DEM (Brosius et al. ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/papers/kgd_MM_head32_4217.ps.gz -- 256.6 Кб -- 03.11.2000
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7351. http://hea-www.harvard.edu/PINTofALE/papers/cs10_drakej1/drakej1.ps
Cool Stars, Stellar Systems and the Sun ASP Conference Series, Vol. 154, 1998 eds. R. A. Donahue and J. A. Bookbinder The Coronal Metallicity of the RS CVn Binary HR 1099 Jeremy ``Unbiased'' Drake and Vinay Kashyap HarvardSmithsonian Center for Astrophysics, 60 Garden Street, Cambridge MA 02138 Abstract: We have derived the abundance of iron relative to hydrogen in the corona of the active RS CVn binary HR 1099 (V711 Tau) using ... CD--1014 Coronal Metallicity of HR 1099 CD--1015 2. ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/papers/cs10_drakej1/drakej1.ps -- 2037.3 Кб -- 03.11.2000
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7352. http://hea-www.harvard.edu/PINTofALE/papers/cs10_kashyav1/kashyav1.ps
Cool Stars, Stellar Systems and the Sun ASP Conference Series, Vol. 154, 1998 eds. R. A. Donahue and J. A. Bookbinder DEM Reconstruction: A MarkovChain MonteCarlo Approach Vinay Kashyap and Jeremy Drake Smithsonian Astophysical Observatory, 60 Garden St., Cambridge, MA 02138 Abstract: We describe a MarkovChain MonteCarlo process using a Metropolis algo rithm to derive Differential Emission Measures (DEMs) and element abundances from EUV line fluxes. ... CD--846 V. Kashyap and J. Drake Figure 1. ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/papers/cs10_kashyav1/kashyav1.ps -- 436.5 Кб -- 03.11.2000
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7353. http://hea-www.harvard.edu/PINTofALE/papers/kdps_1998_aas192_8201_txt.ps.gz
CORONAL METALLICITIES OF ACTIVE BINARIES Vinay Kashyap, Jeremy Drake, Deron Pease HarvardSmithsonian Center for Astrophysics JЁ urgen Schmitt Max Planck Institut fЁ ur Extraterrestriche Physik SUMMARY We analyze EUV and Xray data on a sample of Xray active binary stars (HR 1099, – And, UX Ari, VY Ari, ё UMa, 44i Boo, and YY Gem) to determine coronal abundances. EUVE spectrometer data are used to obtain line fluxes, which are then used to determine Differential Emission Measures (DEMs). ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/papers/kdps_1998_aas192_8201_txt.ps.gz -- 20.1 Кб -- 02.11.2000
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7354. http://hea-www.harvard.edu/PINTofALE/papers/kd_MM_basi28_475.ps.gz
... India (1999) xx, PINTofALE: Package for the Interactive Analysis of Line Emission V.Kashyap & J.J.Drake Center for Astrophysics, Cambridge, MA 02138, USA Abstract. ... It is based on a modular set of IDL tools that interact with an atomic database and with observational data. ... The package has been extended to handle analysis of highresolution Xray spectra that will be obtained with the Chandra XRay Observatory. Key words: Xrays, Xray Spectroscopy, Stellar Coronae, Analysis Methods 1. ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/papers/kd_MM_basi28_475.ps.gz -- 37.9 Кб -- 02.11.2000
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7355. http://hea-www.harvard.edu/~bradw/cv/papers/Mex.pdf
RevMexAA (Serie de Conferencias), 9, 123н130 (2000) EMISSION LINE SPECTRA FROM LOW-DENSITY LABORATORY PLASMAS P. Beiersdorfer ,1 G. V. Brown,1 J. J. Drake,2 M.-F. Gu,3 S. M. Kahn,3 J. K. Lepson,4 D. A. Liedahl, C. W. Mauche,1 D. W. Savin,3 S. B. Utter,1 and ... The spectrum in (a) shows the 2p - 3s emission lines in Fe XVII observed when the beam energy is 1200 eV. ... Line identifications and wavelength measurements are best made by setting the energy of the electron beam 126 BEIERSDORFER ET AL. ...
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Ссылки http://hea-www.harvard.edu/~bradw/cv/papers/Mex.pdf -- 323.5 Кб -- 19.09.2000
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7356. http://hea-www.harvard.edu/~bradw/cv/papers/Mex.ps.gz
Franco RevMexAA (Serie Conferencias), 123--130 (2000) EMISSION LINE SPECTRA FROM LOWнDENSITY LABORATORY PLASMAS Beiersdorfer, Brown, Drake, 2 M.нF. ... Our measurements assess accuracy line excitation calculations, including direct electronнimpact excitation, dielectronic recombination, resonance exciн tation. ... Line identifications wavelength measurements best made setting energy electron beam Franco BEIERSDORFER AL. ... This allows determine the excitation function of a given spectral line. ...
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Ссылки http://hea-www.harvard.edu/~bradw/cv/papers/Mex.ps.gz -- 314.7 Кб -- 19.09.2000
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7357. http://hea-www.harvard.edu/~bradw/cv/papers/fpcSPIE.ps
AXAF Calibration: The HXDS Flow Proportional Counters B. J. Wargelin, E. M. Kellogg, W. C. McDermott, I. N. Evans, and S. A. Vitek Smithsonian Astrophysical Observatory, MS27 Cambridge, Massachusetts 01238 USA ABSTRACT The design, performance, and calibration of the seven Flow Proportional Counters (FPCs) used during AXAF ground calibration are described. ... Note that when the tunable Xray source monochromators are used, FPC voltages are held fixed over a range of Xray energy.) ...
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Ссылки http://hea-www.harvard.edu/~bradw/cv/papers/fpcSPIE.ps -- 154.2 Кб -- 19.09.2000
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7358. http://hea-www.harvard.edu/~bradw/cv/papers/PLTapj.pdf
... The wavelengths of many iron lines are measured with very high accuracy (j/*j up to 4 ] 104), along with several other lines in species such as He-like Al XII and Mg XI. Theoretical spectra that predict both the wavelength and the intensity of Fe emission lines are compared with the observed spectra and are used to make accurate line identiпcations. ... Several transitions are shown to have diagnostic applications, and a detailed analysis of the density sensitivity of Fe XXII lines is presented. ...
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Ссылки http://hea-www.harvard.edu/~bradw/cv/papers/PLTapj.pdf -- 582.1 Кб -- 19.09.2000
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7359. http://hea-www.harvard.edu/~bradw/cv/papers/LETGfirstlight.ps
... Although inflight calibration of the LETGS is in progress, the high spectral resolution Dl # 0.06 and unique wavelength coverage of the LETGS are well demonstrated by the results from Capella, a coronal source rich in spectral emission lines. ... 3 An image of the LETG spectrum is focused on the HRCS with zeroth order at the focus position and dispersed positive and negative orders symmetric on either side of it. ... 34.10 6.70 1.5 Fe xvii 3G(2) 11.53 6.85 ) Fe xviii F22 34.20 . ...
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Ссылки http://hea-www.harvard.edu/~bradw/cv/papers/LETGfirstlight.ps -- 198.6 Кб -- 19.09.2000
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7360. http://hea-www.harvard.edu/~bradw/cv/papers/LETGfirstlight.pdf
... Although in-flight calibration of the LETGS is in progress, the high spectral resolution and unique wavelength coverage of the LETGS are well demonstrated by the results from Capella, a coronal source rich in spectral emission lines. ... L113 TABLE 1 Comparison of Measured and Theoretical Values of the Strongest Lines in the Capella Spectrum as Shown in Figure 1 lobsa ° (A) 6.65 ......... 6.74 ......... 8.42 ......... 9.16 ......... 9.31 ......... 11.54b ...... 12.14b ...
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Ссылки http://hea-www.harvard.edu/~bradw/cv/papers/LETGfirstlight.pdf -- 66.4 Кб -- 19.09.2000
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