Výsledky vyhledávání - "L. S. Sparke"

CIRCUMSTELLAR AND CIRCUMBINARY DISKS IN ECCENTRIC STELLAR BINARIES

Autor: L. A. Aguilar, B. S. Pichardo, L. S. Sparke

Publikováno v: Universidad Nacional Autónoma de México
UNAM
Redalyc-UNAM
Revista Mexicana de Astronomía y Astrofísica (México) Vol.34

"We study the existence of stable trajectories, where gas could accumulate to form accretion discs, around stars that form binary systems in eccentric orbits. Since the potential is time dependent, no fixed, periodic, close orbits exist. Instead, we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2ea5a71a162dae597f4255665d74a747
https://www.redalyc.org/articulo.oa?id=57116170022

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Multiwavelength observations of short time-scale variability in NGC 4151. I. Ultraviolet observations

Autor: D. M. Crenshaw, P. M. Rodriguez-Pascual, S. V. Penton, R. A. Edelson, D. Alloin, T. R. Ayres, J. Clavel, K. Horne, W. N. Johnson, S. Kaspi, K. T. Korista, G. A. Kriss, J. H. Krolik, M. A. Malkan, D. Maoz, H. Netzer, P. T. O'Brien, B. M. Peterson, G. A. Reichert, J. M. Shull, M.-H. Ulrich, W. Wamsteker, R. S. Warwick, T. Yaqoob, T. J. Balonek, P. Barr, G. E. Bromage, M. Carini, T. E. Carone, F.-Z. Cheng, K. K. Chuvaev, M. Dietrich, V. T. Doroshenko, D. Dultzin-Hacyan, A. V. Filippenko, C. M. Gaskell, I. S. Glass, M. R. Goad, J. Hutchings, D. Kazanas, W. Kollatschny, A. P. Koratkar, A. Laor, K. Leighly, V. M. Lyutyi, G. M. MacAlpine, Yu. F. Malkov, P. G. Martin, B. McCollum, N. I. Merkulova, L. Metik, V. G. Metlov, H. R. Miller, S. L. Morris, V. L. Oknyanskij, J. Penfold, E. Perez, G. C. Perola, G. Pike, R. W. Pogge, I. Pronik, V. I. Pronik, R. L. Ptak, M. C. Recondo-Gonzalez, J. M. Rodriguez-Espinoza, E. L. Rokaki, J. Roland, A. C. Sadun, I. Salamanca, M. Santos-Lleo, S. G. Sergeev, S. M. Smith, M. A. J. Snijders, L. S. Sparke, G. M. Stirpe, R. E. Stoner, W.-H. Sun, E. van Groningen, R. M. Wagner, S. Wagner, I. Wanders, W. F. Welsh, R. J. Weymann, B. J. Wilkes, W. Zheng

Publikováno v: Scopus-Elsevier

We present the results of an intensive ultraviolet monitoring campaign on the Seyfert 1 galaxy NGC 4151, as part of an effort to study its short time-scale variability over a broad range in wavelength. The nucleus of NGC 4151 was observed continuousl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2466367e2322c8c786f03ec1e682e3e

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Shape of the Dark Halo of Polar Ring Galaxy NGC 4650A

Autor: P. D. Sackett, L. S. Sparke

Publikováno v: Dynamics and Interactions of Galaxies ISBN: 9783642752759

Polar ring galaxies, which have an optical ring outside and perpendicular to the plane of their central disks, provide a unique opportunity to probe the gravitational potential of a galaxy in two perpendicular planes. We place limits on the flattenin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::056efed7bcd5e16ab17162ff41161f85
https://doi.org/10.1007/978-3-642-75273-5_92

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Polar Rings in Disk Galaxies

Autor: L. S. Sparke

Publikováno v: Dynamics and Interactions of Galaxies ISBN: 9783642752759

A number of disk galaxies, usually S0s, show an outer ring of gas, dust and stars at a large angle to the major axis of the central galaxy. In some cases the inner galaxy is known to rotate rapidly about its short axis, consistent with the interpreta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7c5024a4ee7d0d623b8074cd18c7ebf
https://doi.org/10.1007/978-3-642-75273-5_80

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Steps toward determination of the size and structure of the broad-line region in active galatic nuclei. 8: an intensive HST, IUE, and ground-based study of NGC 5548

Autor: K. T. Korista, D. Alloin, P. Barr, J. Clavel, R. D. Cohen, D. M. Crenshaw, I. N. Evans, K. Horne, A. P. Koratkar, G. A. Kriss, J. H. Krolik, M. A. Malkan, S. L. Morris, H. Netzer, P. T. O'Brien, B. M. Peterson, G. A. Reichert, P. M. Rodriguez-Pascual, W. Wamsteker, K. S. J. Anderson, D. J. Axon, E. Benitez, P. Berlind, R. Bertram, J. H., Jr. Blackwell, N. G. Bochkarev, C. Boisson, M. Carini, R. Carrillo, T. E. Carone, F.-Z. Cheng, J. A. Christensen, K. K. Chuvaev, M. Dietrich, J. J. Dokter, V. Doroshenko, D. Dultzin-Hacyan, M. N. England, B. R. Espey, A. V. Filippenko, C. M. Gaskell, M. R. Goad, L. C. Ho, J. P. Huchra, X. J. Jiang, S. Kaspi, W. Kollatschny, A. Laor, J.-P. Luminet, G. M. MacAlpine, J. W. MacKenty, Yu. F. Malkov, D. Maoz, P. G. Martin, T. Matheson, B. McCollum, N. Merkulova, L. Metik, M. Mignoli, H. R. Miller, M. G. Pastoriza, D. Pelat, J. Penfold, M. Perez, G. C. Perola, J. L. Persaud, J. Peters, R. Pitts, R. W. Pogge, I. Pronik, V. I. Pronik, R. L. Ptak, L. Rawley, M. C. Recondo-Gonzalez, J. M. Rodriguez-Espinosa, W. Romanishin, A. C. Sadun, I. Salamanca, M. Santos-Lleo, K. Sekiguchi, S. G. Sergeev, A. I. Shapovalova, J. C. Shields, C. Shrader, J. M. Shull, N. A. Silbermann, M. L. Sitko, D. R. Skillman, H. A. Smith, S. M. Smith, M. A. J. Snijders, L. S. Sparke, G. M. Stirpe, R. E. Stoner, W.-H. Sun, U. Thiele, S. Tokarz, Z. I. Tsvetanov, D. A. Turnshek, S. Veilleux, R. M. Wagner, S. J. Wagner, I. Wanders, T. Wang, W. F. Welsh, R. J. Weymann, R. J. White, B. J. Wilkes, B. J. Wills, C. Winge, H. Wu, Z. L. Zou

Publikováno v: The Astrophysical Journal Supplement Series. 97:285

We present the data and initial results from a combined Hubble Space Telescope (HST)/IUE/ground-based spectroscopic monitoring campaign on the Seyfert 1 galaxy NGC 5548 that was undertaken in order to address questions that require both higher tempor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bdcfbe7a6709d8574c2675861f391094
https://doi.org/10.1086/192144

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