Search Results - "Gull, T. R."

3D radiative transfer simulations of Eta Carinae's inner colliding winds – I. Ionization structure of helium at apastron by Clementel, N, Madura, T I, Kruip, C JH, Paardekooper, J-P, Gull, T R

“…The highly eccentric binary system Eta Carinae (... Car) shows numerous time-variable emission and absorption features. These observational signatures are the…”
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The extended interacting wind structure of Eta Carinae by Gull, T. R., Nielsen, K. E., Corcoran, M. F., Madura, T. I., Owocki, S. P., Russell, C. M. P., Hillier, D. J., Hamaguchi, K., Kober, G. V., Weis, K., Stahl, O., Okazaki, A. T.

“…The highly eccentric binary system, η Car, provides clues to the transition of massive stars from hydrogen–burning via the CNO cycle to a helium–burning…”
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The Young Interstellar Bubble Within the Rosette Nebula by Bruhweiler, F. C, Freire Ferrero, R, Bourdin, M. O, Gull, T. R

“…We use high-resolution International Ultraviolet Explorer (IUE) data and the interstellar (IS) features of highly ionized Si IV and C IV seen toward the young,…”
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Coronagraphic Imaging of Pre-Main-Sequence Stars with the Hubble Space Telescope Space Telescope Imaging Spectrograph. I. The Herbig Ae Stars by Grady, C. A, Woodgate, B. E, Bowers, C. W, Gull, T. R, Sitko, M. L, Carpenter, W. J, Lynch, D. K, Russell, R. W, Perry, R. B, Williger, G. M, Roberge, A, Bouret, Jean-Claude, Sahu, Meena

“…STIS white-light coronagraphic imaging has been carried out for 14 nearby, lightly reddened Herbig Ae stars, providing data on the environments and disks…”
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The Absorption Spectrum of High-Density Stellar Ejecta in the Line of Sight to η Carinae by Gull, T. R, Vieira, G, Bruhweiler, F, Nielsen, K. E, Verner, E, Danks, A

“…Using the high-dispersion near-UV (NUV) mode of the Space Telescope Imaging Spectrograph (STIS) aboard the Hubble Space Telescope (HST) to observe eta Carinae,…”
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The abundance of iron-peak elements and the dust composition in η Carinae: manganese by Bautista, M. A., Meléndez, M., Hartman, H., Gull, T. R., Lodders, K.

“…We study the chemical abundances of the strontium filament found in the ejecta of η Carinae. In particular, we derive the abundances of iron-peak elements from…”
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Scandium and chromium in the strontium filament in the Homunculus of η Carinae by Bautista, M. A., Ballance, C., Gull, T. R., Hartman, H., Lodders, K., Martínez, M., Meléndez, M.

“…We continue a systematic study of chemical abundances of the strontium filament found in the ejecta of η Carinae. To this end we interpret the emission…”
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Simultaneous Ultraviolet and X-Ray Observations of Seyfert Galaxy NGC 4151. I. Physical Conditions in the X-Ray Absorbers by Kraemer, S. B, George, I. M, Crenshaw, D. M, Gabel, J. R, Turner, T. J, Gull, T. R, Hutchings, J. B, Kriss, G. A, Mushotzky, R. F, Netzer, H, Peterson, B. M, Behar, Ehud

“…We present a detailed analysis of the intrinsic X-ray absorption in the Seyfert 1 galaxy NGC 4151 using Chandra High Energy Transmission Grating Spectrometer…”
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Spectroscopic Signatures of the Vanishing Natural Coronagraph of eta Carinae by Damineli, A., Navarete, F., Moffat, A. F. J., Corcoran, M. F., Gull, T. R., Richardson, Derek N, Weigelt, G., Morris, P. W., Stevens, I.

“…Eta Carinae is a massive interacting binary system shrouded in a complex circumstellar environment whose evolution is the source of the long-term brightening…”
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Eta carinae and the homunculus: far infrared/submillimetre spectral lines detected with the Herschel Space Observatory by Gull, T R, Morris, P W, Black, J H, Nielsen, K E, Barlow, M J, Royer, P, Swinyard, B M

“…ABSTRACT The evolved massive binary star η Carinae underwent eruptive mass-loss events that formed the complex bi-polar ‘Homunculus’ nebula harbouring tens of…”
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The 2014 X-Ray Minimum of η Carinae as Seen by Swift by Corcoran, M. F., Liburd, J., Morris, D., Russell, C. M. P., Hamaguchi, K., Gull, T. R., Madura, T. I., Teodoro, M., Moffat, A. F. J., Richardson, N. D., Hillier, D. J., Damineli, A., Groh, J. H.

“…Abstract We report on Swift X-ray Telescope observations of Eta Carinae ( η  Car), an extremely massive, long-period, highly eccentric binary obtained during…”
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Onthe changes in the physical properties of the ionized region around the Weigelt structures in η Carinae over the 5.54-yr spectroscopic cycle by Teodoro, M, Gull, T R, Bautista, M A, Hillier, D J, Weigelt, G, Corcoran, M F

“…ABSTRACT We present HST/STIS observations and analysis of two prominent nebular structures around the central source of η Carinae, the knots C and D. The…”
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Constraining the absolute orientation of η Carinae's binary orbit: a 3D dynamical model for the broad [Fe iii] emission by Madura, T. I., Gull, T. R., Owocki, S. P., Groh, J. H., Okazaki, A. T., Russell, C. M. P.

“…We present a three-dimensional (3D) dynamical model for the broad [Fe iii] emission observed in η Carinae using the Hubble Space Telescope/Space Telescope…”
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NICER X-Ray Observations of Eta Carinae during Its Most Recent Periastron Passage by Espinoza-Galeas, David, Corcoran, M. F., Hamaguchi, K., Russell, C. M. P., Gull, T. R., Moffat, A. F. J., Richardson, N. D., Weigelt, G., Hillier, D. John, Damineli, Augusto, Stevens, Ian R., Madura, Thomas, Gendreau, K., Arzoumanian, Z., Navarete, Felipe

“…Abstract We report high-precision X-ray monitoring observations in the 0.4–10 keV band of the luminous, long-period colliding wind binary Eta Carinae, up to…”
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Distinguishing circumstellar from stellar photometric variability in Eta Carinae by Damineli, A, Fernández-Lajús, E, Almeida, L A, Corcoran, M F, Damineli, D S C, Gull, T R, Hamaguchi, K, Hillier, D J, Jablonski, F J, Madura, T I, Moffat, A F J, Navarete, F, Richardson, N D, Ruiz, G F, Salerno, N E, Scalia, M C, Weigelt, G

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Long γ-ray bursts and core-collapse supernovae have different environments by Fruchter, A. S, Levan, A. J, Strolger, L, Vreeswijk, P. M, Thorsett, S. E, Bersier, D, Burud, I, Castro Cerón, J. M, Castro-Tirado, A. J, Conselice, C, Dahlen, T, Ferguson, H. C, Fynbo, J. P. U, Garnavich, P. M, Gibbons, R. A, Gorosabel, J, Gull, T. R, Hjorth, J, Holland, S. T, Kouveliotou, C, Levay, Z, Livio, M, Metzger, M. R, Nugent, P. E, Petro, L, Pian, E, Rhoads, J. E, Riess, A. G, Sahu, K. C, Smette, A, Tanvir, N. R, Wijers, R. A. M. J, Woosley, S. E

“…When massive stars exhaust their fuel, they collapse and often produce the extraordinarily bright explosions known as core-collapse supernovae. On occasion,…”
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3D printing meets computational astrophysics: deciphering the structure of η Carinae's inner colliding winds by Madura, T. I., Clementel, N., Gull, T. R., Kruip, C. J. H., Paardekooper, J.-P.

“…We present the first 3D prints of output from a supercomputer simulation of a complex astrophysical system, the colliding stellar winds in the massive…”
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The three-dimensional structure of the Eta Carinae Homunculus by Steffen, W., Teodoro, M., Madura, T. I., Groh, J. H., Gull, T. R., Mehner, A., Corcoran, M. F., Damineli, A., Hamaguchi, K.

“…We investigate, using the modelling code shape, the three-dimensional structure of the bipolar Homunculus nebula surrounding Eta Carinae as mapped by new ESO…”
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The Space Telescope Imaging Spectrograph Design by Woodgate, B. E. , Kimble, R. A. , Bowers, C. W. , Kraemer, S. , Kaiser, M. E. , Danks, A. C. , Grady, J. F. , Loiacono, J. J. , Brumfield, M. , Feinberg, L. , Gull, T. R. , Heap, S. R. , Maran, S. P. , Lindler, D. , Hood, D. , Meyer, W. , VanHouten, C. , Argabright, V. , Franka, S. , Bybee, R. , Dorn, D. , Bottema, M. , Woodruff, R. , Michika, D. , Sullivan, J. , Hetlinger, J. , Ludtke, C. , Stocker, R. , Delamere, A. , Rose, D. , Becker, I. , Garner, H. , Timothy, J. G. , Blouke, M. , Joseph, C. L. , Hartig, G. , Green, R. F. , Jenkins, E. B. , Linsky, J. L. , Hutchings, J. B. , Moos, H. W. , Boggess, A. , Roesler, F. , Weistrop, D. 

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η Carinae across the 2003.5 Minimum: Spectroscopic Evidence for Massive Binary Interactions by Nielsen, K. E, Corcoran, M. F, Gull, T. R, Hillier, D. J, Hamaguchi, K, Ivarsson, S, Lindler, D. J

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