Results 1 to 10 of about 62,817 (33)

The radial velocity curve of HD153919 (4U1700-37) revisited [PDF]

, 2003
We have re-analysed all available high-resolution ultraviolet IUE spectra of the high-mass X-ray binary HD153919/4U1700-37. The radial velocity semi-amplitude of 20.6 +/- 1.0 km/s and orbital eccentricity of 0.22 +/- 0.04 agree very well with the values ...
Ankay, Barziv, Clark, Conti, Evans, G. Hammerschlag-Hensberge, Gies, Haberl, Hammerschlag-Hensberge, Hammerschlag-Hensberge, Heap, Humphreys, Jones, Kaper, Kaper, Kaper, L. Kaper, M. H. van Kerkwijk, Quaintrell, Rubin, Stickland, Stickland, Van Kerkwijk, Van Kerkwijk, Van Paradijs, Zuiderwijk   +25 more
core   +4 more sources

FOS Observations of Four NLS1s [PDF]

, 2000
Ultraviolet through optical spectroscopy of four NLS1s shows strong absorption features in the high-ionization UV resonance lines such as C IV, N V, and Si IV. Mg II is not absorbed.
Grupe, Robert W. Goodrich
core   +2 more sources

The Cosmic Origins Spectrograph and the Future of Ultraviolet Astronomy [PDF]

, 2009
I describe the capabilities of the Cosmic Origins Spectrograph, scheduled for May 2009 installation on the Hubble Space Telescope. With a factor-of-ten increase in far-UV throughput for moderate resolution spectroscopy, COS will enable a range of ...
George Sonneborn, H. Warren Moos, J. Michael Shull, Michael E. Van Steenberg, William P. Blair   +4 more
core   +1 more source

A Giant Planet Undergoing Extreme-Ultraviolet Irradiation By Its Hot Massive-Star Host [PDF]

, 2017
The amount of ultraviolet irradiation and ablation experienced by a planet depends strongly on the temperature of its host star. Of the thousands of extrasolar planets now known, only six have been found that transit hot, A-type stars (with temperatures ...
Bayliss, D., Beatty, T. G., Bieryla, A., Bozza, V., Buchhave, L. A., Collins, K. A., Colón, K. D., Crepp, J. R., Curtis, I. A., DePoy, D. L., Dumont, M. T., D’Ago, G., Eastman, J. D., Ellis, T., Esquerdo, G. A., Fukui, A., Fulton, B. J., Gaillard, C., Gaudi, B. S., Gonzales, E. J., Gould, A., Gregorio, J., Howard, A. W., Ito, A., James, D. J., Jang-Condell, H., Jensen, Eric L.N., Johnson, M. C., Joner, M. D., Kasper, D. H., Kielkopf, J. F., Kuhn, R. B., Labadie-Bartz, J., Latham, D. W., Lund, M. B., Manner, M., Marshall, J. L., Matt, K., McLeod, K. K., Narita, N., Novati, S. C., Oberst, T. E., Penny, M., Pepper, J., Pogge, R. W., Reed, P. A., Relles, H., Rodriguez, J. E., Scarpetta, G., Siverd, R. J., Stassun, K. G., Stephens, D. C., Stevens, D. J., Stockdale, C., Tan, T. G., Trueblood, M., Trueblood, P., Yeigh, R. R., Zambelli, R., Zhou, G.   +59 more
core   +3 more sources

Research in extreme ultraviolet and far ultraviolet astronomy [PDF]

Instruments designed to explore different aspects of far and extreme ultraviolet cosmic radiation were studied. The far ultraviolet imager (FUVI) was flown on the Aries sounding rocket. Its unique large format 75mm detector mapped out the far ultraviolet
Labov, S. E.
core   +7 more sources

UV and EUV Instruments

, 2010
We describe telescopes and instruments that were developed and used for astronomical research in the ultraviolet (UV) and extreme ultraviolet (EUV) regions of the electromagnetic spectrum.
A. Boggess, A. Boksenberg, A. Gregorio, A. Vuillemin, A.A. Boyarchuk, A.A. Boyarchuk, A.F. Davidsen, A.L. Broadfoot, A.M. Smith, A.M. Zvereva, B. Valcu, B.G. Taylor, C. de Jager, C. Morales, C.B. Opal, C.S. Weller, D.C. Martin, D.J. Sahnow, E. Pfeffermann, E.B. Jenkins, E.G. Schmidt, E.J. Korpela, F. Paresce, F.G. Ocallaghan, G.A. Gurzadyan, G.A. Gurzadyan, G.G. Spear, G.M. Tovmasyan, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, G.R. Carruthers, H.W. Moos, H.W. Moos, J. Barnstedt, J. Edelstein, J. Murthy, J. Murthy, J.B. Pearce, J.B. Rogerson, J.D. Fix, J.J. Bloch, J.W. Kruk, K.G. Henize, K.H. Nordsieck, K.O. Mason, L. Strüder, L.H. Aller, M. Hurwitz, M. Hurwitz, M. Hurwitz, M. Hurwitz, M. Laget, M. Maucherat-Joubert, M.A. Barstow, M.C. Weisskopf, M.R. Molnar, N. Gehrels, N.A. Dimov, N.A. Dimov, N.A. Dimov, N.A. Dimov, N.E. White, P. Morissey, P.R. Wesselius, R. Giacconi, R. Stalio, R. Wilson, R.C. Bless, R.C. Henry, R.J. van Duinen, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, S. Bowyer, T.P. Stecher, V.G. Kurt, V.G. Kurt, W. Tobin, W.G. Fastie, Y. Kondo   +83 more
core   +1 more source

Overview of the Far Ultraviolet Spectroscopic Explorer Mission [PDF]

, 2000
The Far Ultraviolet Spectroscopic Explorer satellite observes light in the far-ultraviolet spectral region, 905 - 1187 A with high spectral resolution.
A. F. Davidsen, A. G. Michalitsianos, A. J. Willis, A. K. Dupree, A. N. Cha, A. Vidal-Madjar, A. W. Fullerton, B-G Andersson, B. D. Savage, B. E. Woodgate, B. Y. Welsh, Broadfoot A. L., C. Gry, C. L. Morbey, C. Oliveira, D. G. York, D. J. Sahnow, D. K. McCarthy, D. Mark, E. B. Jenkins, E. M. Murphy, E. Wilkinson, G. A. Gaines, G. A. Kriss, G. Hebrard, G. Sonneborn, Grange R., H. A. Weaver, H. W. Moos, J. B. Hutchings, J. C. Green, J. L. Linsky, J. M. Shull, J. P. Andrews, J. W. Kruk, K. R. Brownsberger, K. R. Sembach, L. Bianchi, L. L. Cowie, M. A. Gummin, M. Saisse, O. H. W. Siegmund, P. Chayer, P. D. Feldman, R. F. Green, R. F. Malina, R. G. Ohl, R. Grange, R. H. Barkhouser, R. Murowinski, S. D. Friedman, S. J. Conard, S. N. Osterman, T. B. Ake, T. P. Snow, W. C. Cash, W. P. Blair, W. R. Oegerle, W. Zheng   +58 more
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The status and future of EUV astronomy

, 2013
The Extreme Ultraviolet wavelength range was one of the final windows to be opened up to astronomy. Nevertheless, it provides very important diagnostic tools for a range of astronomical objects, although the opacity of the interstellar medium restricts ...
Barstow, M. A., Casewell, S. L., Holberg, J. B., Kowalski, M. P.   +3 more
core   +1 more source

Imaging of single infrared, optical, and ultraviolet photons using distributed tunnel junction readout on superconducting absorbers [PDF]

, 2006
Single-photon imaging spectrometers of high quantum efficiency in the infrared to ultraviolet wavelength range, with good timing resolution and with a vanishing dark count rate are on top of the wish list in earth-bound astronomy, material and medical ...
Alex Zehnder, Eugenie Kirk, Jochum J., Miha Furlan   +3 more
core   +2 more sources

The Challenge to Large Optical Telescopes from X-ray Astronomy [PDF]

, 2002
In the ROSAT era of the mid-1990's, the problems facing deep X-ray surveys could be largely solved with 10 m class telescopes. In the first decade of this new millennium, with X-ray telescopes such as the Chandra X-ray Observatory and XMM-Newton in ...
Hornschemeier, Ann E.
core   +3 more sources