W
W. Wamsteker
Researcher at Space Telescope Science Institute
Publications - 26
Citations - 1304
W. Wamsteker is an academic researcher from Space Telescope Science Institute. The author has contributed to research in topics: Galaxy & Active galactic nucleus. The author has an hindex of 16, co-authored 26 publications receiving 1249 citations.
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Journal ArticleDOI
Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I, an 8 month campaign of monitoring NGC 5548 with IUE
J. Clavel,G. A. Reichert,Danielle Alloin,D. M. Crenshaw,Gerard A. Kriss,Julian H. Krolik,M. A. Malkan,Hagai Netzer,Bradley M. Peterson,W. Wamsteker,Aldo Altamore,T. Baribaud,P. Barr,Sara C. Beck,Luc Binette,G. E. Bromage,Noah Brosch,Angeles I. Díaz,Alexei V. Filippenko,Klaus J. Fricke,C. M. Gaskell,Paolo Giommi,Ian S. Glass,P. M. Gondhalekar,R. L. Hackney,Jules P. Halpern,D. J. Hutter,S. Jörsäter,Anne L. Kinney,Wolfram Kollatschny,A. P. Koratkar,Kirk T. Korista,Ari Laor,Jean-Pierre Lasota,Elia M. Leibowitz,D. Maoz,Peter G. Martin,Tsevi Mazeh,E. J.A. Meurs,A. D. Nair,P. T. O'Brien,D. Pelat,Enrique Pérez,G. C. Perola,Roger Ptak,P. M. Rodríguez-Pascual,E. I. Rosenblatt,A. C. Sadun,M. Santos-Lleo,R. A. Shaw,Paul S. Smith,G. M. Stirpe,R. Stoner,Wei-Hsin Sun,M. H. Ulrich,E. van Groningen,Wei Zheng +56 more
TL;DR: In this paper, an 8-month campaign of monitoring NGC 5548 with IUE is described, with the goal of determining the size and structure of the broad-line region in active galactic nuclei.
Journal ArticleDOI
Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. 5: Variability of the ultraviolet continuum and emission lines of NGC 3783
Gail A. Reichert,P. M. Rodriquez-Pascual,Danielle Alloin,J. Clavel,D. M. Crenshaw,Gerard A. Kriss,Julian H. Krolik,M. A. Malkan,Hagai Netzer,Bradley M. Peterson,W. Wamsteker,Aldo Altamore,B. Altieri,K. S. J. Anderson,J. H. Blackwell,Catherine Boisson,Noah Brosch,T. E. Carone,M. Dietrich,M. N. England,I. N. Evans,Alexei V. Filippenko,C. M. Gaskell,M. R. Goad,P. M. Gondhalekar,Keith Horne,Demos Kazanas,Wolfram Kollatschny,Anuradha Koratkar,Kirk T. Korista,Gordon M. MacAlpine,D. Maoz,Tsevi Mazeh,B. McCollum,H. R. Miller,C. Mendes de Oliveira,P. T. O'Brien,Miriani Griselda Pastoriza,D. Pelat,Enrique Pérez,G. C. Perola,Richard W. Pogge,Roger Ptak,M. C. Recondo-Gonzalez,J. M. Rodriguez-Espinoza,E. I. Rosenblatt,A. C. Sadun,M. Santos-Lleo,Joseph C. Shields,Chris Shrader,J. M. Shull,S. M. Simkin,Michael L. Sitko,M. A. J. Snijders,Linda S. Sparke,G. M. Stirpe,R. Stoner,Thaisa Storchi-Bergmann,Wei-Hsin Sun,Tinggui Wang,W. F. Welsh,R. J. White,Claudia Winge,W. Zheng +63 more
TL;DR: In this paper, the authors report on the results of intensive ultraviolet spectral monitoring of the Seyfert 1 galaxy NGC 3783, which was observed with the International Ultraviolet Explorer satellite on a regular basis for a total of 7 months, once every 4 days for the first 172 days and once every other day for the final 50 days.
Journal ArticleDOI
Correlated hard X-ray and ultraviolet variability in NGC 5548
J. Clavel,Kirpal Nandra,F. Makino,Ken Pounds,Gail A. Reichert,C. M. Urry,W. Wamsteker,M. Peracaula-Bosch,G. C. Stewart,Chiko Otani +9 more
TL;DR: In this article, it was shown that the 1350 A and 2-10 keV flux variations appear to be simultaneous to within no more than six days in NGC 4151.
Journal ArticleDOI
Multiwavelength Monitoring of the BL Lacertae Object PKS 2155-304. I. The IUE Campaign
C. M. Urry,L. Maraschi,Rick Edelson,Anuradha Koratkar,Julian H. Krolik,Greg Madejski,Greg Madejski,Elena Pian,G. Pike,Gail A. Reichert,Gail A. Reichert,Aldo Treves,W. Wamsteker,Ralph C. Bohlin,Joel N. Bregman,W. Brinkmann,L. Chiappetti,Thierry J.-L. Courvoisier,Alexei V. Filippenko,H. H. Fink,Ian M. George,Yoji Kondo,P. G. Martin,P. G. Martin,H. R. Miller,P. T. O'Brien,J. M. Shull,Michael L. Sitko,Andrew E. Szymkowiak,Gianpiero Tagliaferri,Stefan Wagner,R. S. Warwick +31 more
TL;DR: In this article, the long-wavelength UV light curves are well correlated with each other, and with the optical light curve deduced from the Fine Error Sensor on IUE.
Journal ArticleDOI
Ultraviolet observations of SN 1987A with the IUE satellite
Chun S. J. Pun,Robert P. Kirshner,George Sonneborn,Peter Challis,George E. Nassiopoulos,Richard Arquilla,D. Michael Crenshaw,Chris Shrader,Terry Teays,Angelo Cassatella,Roberto Gilmozzi,Antonio Talavera,W. Wamsteker,Claes Fransson,Nino Panagia +14 more