Search Results - "PRAVDO, S"

Chandra X-Ray Spectroscopic Imaging of Sagittarius A and the Central Parsec of the Galaxy by Baganoff, F. K, Maeda, Y, Morris, M, Bautz, M. W, Brandt, W. N, Cui, W, Doty, J. P, Feigelson, E. D, Garmire, G. P, Pravdo, S. H, Ricker, G. R, Townsley, L. K

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Early optical emission from the γ-ray burst of 4 October 2002 by Fox, D. W, Yost, S, Kulkarni, S. R, Torii, K, Kato, T, Yamaoka, H, Sako, M, Harrison, F. A, Sari, R, Price, P. A, Berger, E, Soderberg, A. M, Djorgovski, S. G, Barth, A. J, Pravdo, S. H, Frail, D. A, Gal-Yam, A, Lipkin, Y, Mauch, T, Harrison, C, Buttery, H

“…Observations of the long-lived emission-or 'afterglow'-of long-duration γ-ray bursts place them at cosmological distances, but the origin of these energetic…”
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A Chandra Study of Sagittarius A East: A Supernova Remnant Regulating the Activity of Our Galactic Center? by Maeda, Y, Baganoff, F. K, Feigelson, E. D, Morris, M, Bautz, M. W, Brandt, W. N, Burrows, D. N, Doty, J. P, Garmire, G. P, Pravdo, S. H, Ricker, G. R, Townsley, L. K

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Discovery of a New Nearby Star by Teegarden, B. J, Pravdo, S. H, Hicks, M, Lawrence, K, Shaklan, S. B, Covey, K, Fraser, O, Hawley, S. L, McGlynn, T, Reid, I. N

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Direct Detection of the Brown Dwarf GJ 802B with Adaptive Optics Masking Interferometry by Lloyd, James P, Martinache, Frantz, Ireland, Michael J, Monnier, John D, Pravdo, Steven H, Shaklan, Stuart B, Tuthill, Peter G

“…We have used the Palomar 200" adaptive optics (AO) system to directly detect the astrometric brown dwarf GJ 802B reported by Pravdo et al. This observation is…”
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Discovery of X-rays from the protostellar outflow object HH2 by Pravdo, Steven H, Feigelson, Eric D, Garmire, Gordon, Maeda, Yoshitomo, Tsuboi, Yohko, Bally, John

“…Herbig-Haro (HH) objects have been known for 50 years to be luminous condensations of gas in star-forming regions, but their underlying physical nature is…”
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Astrometric Discovery of GJ 802b: In the Brown Dwarf Oasis? by Pravdo, Steven H, Shaklan, Stuart B, Lloyd, James

“…The Stellar Planet Survey is an ongoing astrometric search for giant planets and brown dwarfs around a sample of 630 M dwarfs. We have discovered several…”
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The Origins Billions Star Survey : Galactic explorer by JOHNSTON, K. J, DORLAND, B, HILTON, J, KAPLAN, G, MONET, D, MUNN, J, PIER, J, VRBA, F, SEIDELMANN, K, SEAGER, S, PRAVDO, S, COSTE, K, GAUME, R, DANNER, R, GRILLMAIR, C, STAUFFER, J, BOSS, A, CURRIE, D, DANCHI, W, GOULD, A, KOPEIKIN, S, MAJEWSKI, S, MAKAROV, V, HENNESSY, G, MCMILLAN, R, PETERSON, D. M, SHAYA, E, UNWIN, S, OLLING, R, ZACHARIAS, N, BEHR, B, EFROIMSKY, M, HAJIAN, A, HARRIS, H

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Astrometric Discovery of GJ 164B by Pravdo, Steven H, Shaklan, Stuart B, Henry, Todd, Benedict, G. Fritz

“…We discovered a low-mass companion to the M dwarf GJ 164 with the CCD-based imaging system of the Stellar Planet Survey astrometric program. The existence of…”
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Masses of Astrometrically Discovered and Imaged Binaries: G78-28ABand GJ 231.1BC by Pravdo, SH, Shaklan, S B, Wiktorowicz, S J, Kulkarni, S, Lloyd, J P, Martinache, F, Tuthill, P G, Ireland, MJ

“…The Stellar Planet Survey (STEPS) is an ongoing astrometric search for giant planets and brown dwarfs around a sample of 630 M dwarfs. We have discovered…”
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Discovery of the Bright Trans-Neptunian Object 2000 EB173 by Ferrin, Ignacio, Rabinowitz, D, Schaefer, B, Snyder, J, Ellman, N, Vicente, B, Rengstorf, A, Depoy, D, Salim, S, Andrews, P, Bailyn, C, Baltay, C, Briceno, C, Coppi, P, Deng, M, Emmet, W, Oemler, A, Sabbey, C, Shin, J, Sofia, S, van Altena, W, Vivas, K, Abad, C, Bongiovanni, A, Bruzual, G, Della Prugna, F, Herrera, D, Magris, G, Mateu, J, Pacheco, R, Sánchez, Ge, Sánchez, Gu, Schenner, H, Stock, J, Vieira, K, Fuenmayor, F, Hernandez, J, Naranjo, O, Rosenzweig, P, Secco, C, Spavieri, G, Gebhard, M, Honeycutt, K, Mufson, S, Musser, J, Pravdo, S, Helin, E, Lawrence, K

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An ASCA Observation of the X-Ray Binary GX 301-2 by Saraswat, P., Yoshida, A., Mihara, T., Kawai, N., Takeshima, T., Nagase, F., Makishima, K., Tashiro, M., Leahy, D. A., Pravdo, S., Day, C. S. R., Angelini, L.

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X-rays from the Power Sources of the Cepheus A Star-Forming Region by Pravdo, S. H, Tsuboi, Y, Uzawa, A, Ezoe, Y

“…Astrophys.J.704:1495-1505,2009 We report an observation of X-ray emission from the exciting region of Cepheus A with the Chandra/ACIS instrument. What had been…”
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Modelling of a space-based Ronchi ruling experiment for high-precision astrometry by Shaklan, S., Pravdo, S., Gatewood, G., Ftaclas, C.

“…An end-to-end modelling program for an astrometric telescope employing a Ronchi ruling has been developed. The program models the aberrated images formed…”
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A reduced estimate of the number of kilometre-sized near-Earth asteroids by Rabinowitz, David, Helin, Eleanor, Lawrence, Kenneth, Pravdo, Steven

“…Near-Earth asteroids are small (diameters < 10 km), rocky bodies with orbits that approach that of the Earth (they come within 1.3 AU of the Sun). Most have a…”
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Galactic distribution of X-ray burst sources by LEWIN, W. H. G, HOFFMAN, J. A, DOTY, J, CLARK, G. W, SWANK, J. H, BECKER, R. H, PRAVDO, S. H, SERLEMITSOS, P. J

“…Data on X-ray bursts recorded by the OSO-8 and SAS-3 satellites and criteria (rise time, duration, recurrence) for X-ray bursts are examined in a study of…”
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Evidence for a 17-d periodicity from Cyg X-3 by HOLT, S. S, BOLDT, E. A, SERLEMITSOS, P. J, KALUZIENSKI, L. J, PRAVDO, S. H, PEACOCK, A, ELVIS, M, WATSON, M. G, POUNDS, K. A

“…Data are presented from the Ariel-V All-Sky Monitor which indicate a 17-day periodicity of the X-ray spectra from Cyg X-3 (3U2030+40). The data are consistent…”
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Absence of detectable X rays from supercluster candidate 4U0134-11 by PRAVDO, S. H, MUSHOTZKY, R. F, BECKER, R. H, BOLDT, E. A, HOLT, S. S, SERLEMITSOS, P. J, SWANK, J. H

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X-Ray-emitting Young Stars in the Orion Nebula by Feigelson, Eric D, Broos, Patrick, Gaffney III, James A, Garmire, Gordon, Hillenbrand, Lynne A, Pravdo, Steven H, Townsley, Leisa, Tsuboi, Yohko

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The identification of H2311 + 77 with HD220140, a probable RS CVn star by Pravdo, S. H., White, N. E., Giommi, P.

“…H2311 + 77, one of the bright soft X-ray sources in the sky originally detected with HEAO 1, has been identified in an Exosat imaging observation with a…”
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