Search Results - "Hillwig, T."

Identifying close binary central stars of PN with Kepler by De Marco, Orsola, Long, J., Jacoby, George H., Hillwig, T., Kronberger, M., Howell, Steve B., Reindl, N., Margheim, Steve

“…Six planetary nebulae (PN) are known in the Kepler space telescope field of view, three of which are newly identified. Of the five central stars of PN with…”
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Spectroscopic Observations of the Mass Donor Star in SS 433 by Hillwig, T. C, Gies, D. R

“…The microquasar SS 433 is an interacting massive binary consisting of an evolved mass donor and a compact companion that ejects relativistic jets. The mass…”
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IC 4663: the first unambiguous [WN] Wolf-Rayet central star of a planetary nebula by Miszalski, B., Crowther, P. A., De Marco, O., Köppen, J., Moffat, A. F. J., Acker, A., Hillwig, T. C.

“…We report on the serendipitous discovery of the first central star of a planetary nebula (PN) that mimics the helium- and nitrogen-rich WN sequence of massive…”
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The Ultraviolet Spectrum and Physical Properties of the Mass Donor Star in HD 226868 = Cygnus X-1 by Caballero-Nieves, S. M, Gies, D. R, Bolton, C. T, Hadrava, P, Herrero, A, Hillwig, T. C, Howell, S. B, Huang, W, Kaper, L, Koubský, P, McSwain, M. V

“…We present an examination of high-resolution, ultraviolet (UV) spectroscopy from Hubble Space Telescope of the photospheric spectrum of the O-supergiant in the…”
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Identification of the Mass Donor Star's Spectrum in SS 433 by Hillwig, T. C, Gies, D. R, Huang, W, McSwain, M. V, Stark, M. A, van der Meer, A, Kaper, L

“…We present spectroscopy of the microquasar SS 433 obtained near primary eclipse and disk precessional phase q = 0.0, when the accretion disk is expected to be…”
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Stellar Wind Variations during the X-Ray High and Low States of Cygnus X-1 by Gies, D. R, Bolton, C. T, Blake, R. M, Caballero-Nieves, S. M, Crenshaw, D. M, Hadrava, P, Herrero, A, Hillwig, T. C, Howell, S. B, Huang, W, Kaper, L, Koubský, P, McSwain, M. V

“…We present results from Hubble Space Telescope ultraviolet spectroscopy of the massive X-ray and black hole binary system, HD 226868 = Cyg X-1. The spectra…”
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Dynamical Masses for the Large Magellanic Cloud Massive Binary System [L72] LH 54-425 by Williams, S. J, Gies, D. R, Henry, T. J, Orosz, J. A, McSwain, M. V, Hillwig, T. C, Penny, L. R, Sonneborn, G, Iping, R, van der Hucht, K. A, Kaper, L

“…We present results from an optical spectroscopic investigation of the massive binary system [L72] LH 54-425 in the LH 54 OB association in the Large Magellanic…”
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NSV 11154 Is a New R Coronae Borealis Star by KIJBUNCHOO, Nutsinee, CLAYTON, Geoffrey C, VIEUX, Timothy C, DICKERMAN, N, HILLWIG, T. C, WELCH, D. L, PAGNOTTA, Ashley, TANG, Sumin, GRINDLAY, J. E, HENDEN, A

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Binary and Multiple O-Type Stars in the Cassiopeia OB6 Association by Hillwig, Todd C, Gies, Douglas R, Bagnuolo, Jr., William G, Huang, Wenjin, McSwain, M. Virginia, Wingert, David W

“…We present the results of time-resolved spectroscopy of 13 O-type stars in the Cas OB6 stellar association. We conducted a survey for radial velocity…”
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Stellar Wind Variations during the X‐Ray High and Low States of Cygnus X‐11,2 by Gies, D. R., Bolton, C. T., Blake, R. M., Caballero‐Nieves, S. M., Crenshaw, D. M., Hadrava, P., Herrero, A., Hillwig, T. C., Howell, S. B., Huang, W., Kaper, L., Koubský, P., McSwain, M. V.

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The binary fraction of planetary nebula central stars – II. A larger sample and improved technique for the infrared excess search by Douchin, Dimitri, De Marco, Orsola, Frew, D. J., Jacoby, G. H., Jasniewicz, G., Fitzgerald, M., Passy, Jean-Claude, Harmer, D., Hillwig, Todd, Moe, Maxwell

“…There is no conclusive explanation of why ∼80 per cent of planetary nebulae (PNe) are non-spherical. In the Binary Hypothesis, a binary interaction is a…”
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Radial Velocities of Galactic O-Type Stars. II. Single-lined Spectroscopic Binaries by Williams, S. J, Gies, D. R, Hillwig, T. C, McSwain, M. V, Huang, W

“…We report on new radial velocity measurements of massive stars that are either suspected binaries or lacking prior observations. This is part of a survey to…”
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IC 4663: the first unambiguous [WN] Wolf-Rayet central star of a planetary nebula: IC 4663 by Miszalski, B., Crowther, P. A., De Marco, O., Köppen, J., Moffat, A. F. J., Acker, A., Hillwig, T. C.

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IC 4663: The first unambiguous [WN] Wolf-Rayet central star of a planetary nebula by Miszalski, B, Crowther, P. A, De Marco, O, Köppen, J, Moffat, A. F. J, Acker, A, Hillwig, T. C

“…We report on the serendipitous discovery of the first central star of a planetary nebula (PN) that mimics the helium- and nitrogen-rich WN sequence of massive…”
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NSV 11154 Is a New R Coronae Borealis Star by Kijbunchoo, Nutsinee, Clayton, Geoffrey C, Vieux, Timothy C, Dickerman, N, Hillwig, T. C, Welch, D. L, Pagnotta, Ashley, Tang, Sumin, Grindlay, J. E, Henden, A

“…NSV 11154 has been confirmed as a new member of the rare hydrogen deficient R Coronae Borealis (RCB) stars based on new photometric and spectroscopic data…”
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NSV 11154 Is a New R R Coronae Borealis Star by Kijbunchoo, Nutsinee, Clayton, Geoffrey C., Vieux, Timothy C., Dickerman, N., Hillwig, T. C., Welch, D. L., Pagnotta, Ashley, Tang, Sumin, Grindlay, J. E., Henden, A.

“…NSV 11154 has been confirmed as a new member of the rare hydrogen-deficient R R Coronae Borealis (RCB) stars based on new photometric and spectroscopic data…”
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NSV 11154 Is a New Coronae Borealis Star by Kijbunchoo, Nutsinee, Clayton, Geoffrey C, Vieux, Timothy C, Dickerman, N, Hillwig, T C, Welch, D L, Pagnotta, Ashley, Tang, Sumin, Grindlay, JE, Henden, A

“…NSV 11154 has been confirmed as a new member of the rare hydrogen-deficient Coronae Borealis (RCB) stars based on new photometric and spectroscopic data. Using…”
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The Ultraviolet Spectrum and Physical Properties of the Mass Donor Star in HD 226868 = Cygnus X-1 by Caballero-Nieves, S. M, Gies, D. R, Bolton, C. T, Hadrava, P, Herrero, A, Hillwig, T. C, Howell, S. B, Huang, W, Kaper, L, Koubsky, P, McSwain, M. V

“…Astrophys.J.701:1895-1905,2009 We present an examination of high resolution, ultraviolet spectroscopy from Hubble Space Telescope of the photospheric spectrum…”
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A Spectroscopic Study of Mass Outflows in the Interacting Binary RY Scuti by Grundstrom, E. D, Gies, D. R, Hillwig, T. C, McSwain, M. V, Smith, N, Gehrz, R. D, Stahl, O, Kaufer, A

“…Astrophys.J.667:505-519,2007 The massive interacting binary RY Scuti is an important representative of an active mass-transferring system that is changing…”
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Dynamical Masses for the Large Magellanic Cloud Massive Binary System [L72] LH 54-425 by Williams, S. J, Gies, D. R, Henry, T. J, Orosz, J. A, McSwain, M. V, Hillwig, T. C, Penny, L. R, Sonneborn, G, Iping, R, van der Hucht, K. A, Kaper, L

“…Astrophys.J.682:492-498,2008 We present results from an optical spectroscopic investigation of the massive binary system [L72] LH~54-425 in the LH 54 OB…”
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