Recent Publications

The following is a list of my recent publications, most of which are on Be Stars, Be/X-Ray Binaries, and other massive binaries.

Refereed Journals

2010

• Detection of high-velocity material from the wind-wind collision zone of Eta Carinae across the 2009.0 periastron passage
  Groh, J.H., Nielsen, K.E., Damineli, A., Gull, T.R., Madura, T.I., Hillier, D.J., Teodoro, M., Driebe, T., Weigelt, G., Hartman, H., Kerber, F., Okazaki, A.T., Owocki, S.P., Millour, F., Murakawa, K., Kraus, S., Hofmann, K-H., Schertl, D., 2010, accepted in A&A
  arXiv:1003.4527
• Excitation of Trapped g-Mode Oscillations in Warped Disks around Black Holes
  Oktariani, F., Okazaki, A.T., Kato, S., 2010, PASJ, 62, 709
  arXiv:1004.0555
• High-dispersion spectroscopic monitoring of the Be/X-ray binary A0535+26/V725 Tau - I. The long-term profile variability
  Moritani, Y., Nogami, D., Okazaki, A. T., Imada, A., Kambe, E., Honda, S., Hashimoto, O., Ishino, Y., Suzuki, Y., Tanaka, J., 2010, MNRAS, 405, 467
  arXiv:1002.2063
• The H-alpha Variations of Eta Carinae During the 2009.0 Spectroscopic Event
  Richardson, N. D., Gies, D. R., Henry, T. J., Fernández-Lajús, E., Okazaki, A. T., 2010, AJ, 139, 1534
  arXiv:1001.3414

2009

• The extended interacting wind structure of Eta Carinae
  T. R. Gull, K.E. Nielsen, M.F. Corcoran, T.I. Madura, S.P. Owocki, C.M.P. Russell, D.J. Hillier, K. Hamaguchi, G.V. Kober, K. Weis, O. Stahl, A.T. Okazaki, 2009, MNRAS, 396, 1308
  DOI
• Cyclic variability of the circumstellar disk of the Be star zetaTau - I. Long-term monitoring observations
  S. Stefl, TH. Rivinius, A.C. Carciofi, J-B. LeBouquin, D. Baade, K.S. Bjorkman, E. Hesselbach, C.A. Hummel, A.T. Okazaki, E. Pollmann, F. Rantakyrö, J.P. Wisniewski, 2009, A&A, in press
  astro-ph
• Cyclic Variability of the Circumstellar Disc of the Be Star $zeta$ Tau. II. Testing the 2D Global Disc Oscillation Model
  A. C. Carciofi, A. T. Okazaki, J-B. le Bouquin, S.Štefl, Th. Rivinius, D. Baade, J.E. Bjorkman, C.A. Hummel, 2009, A&A, in press
  astro-ph
• A New Approach for Probing Circumbinary Disks
  K. Hayasaki & A.T. Okazaki, 2009, ApJL, 691, L5
  astro-ph
• Global Disk Oscillations in Binary Be Stars
  F. Oktariani & A.T. Okazaki, 2009, PASJ, 61, 57
  astro-ph

2008

• Modeling the RXTE light curve of eta Carinae from a 3-D SPH simulation of its binary wind collision
  A.T. Okazaki, S.P. Owocki, C.M. Russell & M.F. Corcoran, 2008, MNRAS, 388, L39
  astro-ph
• Tidal Interactions of Red Giants with Environment Stars in Globular Clusters
  S. Yamada, A.T. Okazaki & M.Y. Fujimoto, 2008, ApJ, 678, 922
  astro-ph

2007

• Accretion vs Colliding Wind Models for the Gamma-ray Binary
  LS I +61 303: An Assessment
  G.E. Romero, A.T. Okazaki, M. Orellana & S.P. Owocki, 2007, A&A, 474, 15
  astro-ph

2006

• Long-term evolution of accretion discs in Be/X-ray binaries
  K. Hayasaki & A.T. Okazaki, 2006, MNRAS, 372, 1140
  astro-ph

2005

• The binary period and outburst behaviour of the Small Magellanic Cloud X-ray binary pulsar system SXP 504
  W.R.T. Edge, M.J. Coe, J.L. Galache, V.A. McBride, R.H.D. Corbet, A.T. Okazaki, S. Laycock, C.B. Markwardt, F.E. Marshall & A. Udalski, 2005, MNRAS, 361, 743
  astro-ph
• One-armed spiral structure of accretion discs induced by a phase-dependent mass transfer in Be/X-ray binaries
  K. Hayasaki & A.T. Okazaki, 2005, MNRAS, 360, L15
  astro-ph

2004

• Accretion disc formation around the neutron star in Be/X-ray binaries
  K. Hayasaki & A.T. Okazaki, 2004, MNRAS, 350, 971
  astro-ph

2002

• Viscous Effects on the Interaction between the Coplanar Decretion Disc and the Neutron Star in Be/X-Ray Binaries
  A.T. Okazaki, M.R. Bate, G.I. Ogilvie, J.E. Pringle, 2002, MNRAS, 337, 967
  astro-ph

2001

• Phase Changes of the Be/X-ray Binary X Persei
  J.S. Clark, A.E. Tarasov, A.T. Okazaki et al., 2001, A&A 380, 615
• A natural explanation for periodic outbursts in Be/X-ray binaries
  A.T. Okazaki & I. Negueruela, 2001, A&A 377, 161
  astro-ph
• The Be/X-ray transient 4U0115+634/V635 Cassiopeiae II. Outburst mechanisms
  I. Negueruela, A.T. Okazaki, J. Fabregat, M.J. Coe, U. Munari, & T.Tomov, 2001, A&A 369, 117
  astro-ph
• The Be/X-ray transient 4U0115+634/V635 Cassiopeiae I. A consistent model
  I. Negueruela, A.T. Okazaki, 2001, A&A 369, 108
  astro-ph
• Viscous Transonic Decretion in Disks of Be Stars
  A.T. Okazaki, 2001, PASJ 53, 119
  astro-ph

Conference Proceedings

2010

2009

• The accretion regime of LS 5039: 3-D SPH simulations
  A.T. Okazaki, G.E. Romero, S.P. Owocki, 2009,
  In: Brandt, S., Westergaard, N.J. & Lund, N. (eds.), 7th INTEGRAL Workshop - An INTEGRAL View of Compact Objects, PoS, 67, p.74
  astro-ph

2008

• 3-D SPH Simulations of Colliding Winds in eta Carinae
  A.T. Okazaki, S.P. Owocki, C.M.P. Russell & M.F. Corcoran, 2008,
  In: Bresolin, F., Crowther, P.A. & Puls, J. (eds.) , IAU Symp. 250 on Massive Stars as Cosmic Engines, Cambridge University Press, p.133
  astro-ph
  
• LS I+61 303: microquasar or not microquasar?
  G.E. Romero, M. Orellana, A.T. Okazaki & S.P. Owocki, 2008,
  International Journal of Modern Physics D, 17, p.1875
  astro-ph

2007

• Accretion/Decretion Disk Dynamics in Be/X-ray Binaries
  A.T. Okazaki, 2007, In: Moffat, A. and St-Louis, N. (eds.),
  Massive Stars in Binaries, ASP Conference Series, p.485
• SPH Simulations of Accretion Flow via Roche Lobe Overflow and via Mass Transfer from Be Disk
  K. Hayasaki & A.T. Okazaki & J.R. Murray, 2007, In: Štefl, .S, Owocki, S.P. & Okazaki, A.T. (eds.), Active OB-Stars: Laboratories for Stellar and Circumstellar Physics, ASP Conference Series, Vol.361, p.431
• Long-Term Evolution of Accretion Disks around Neutron Stars in Be/X-ray Binaries
  K. Hayasaki & A.T. Okazaki, 2007, In: Štefl, .S, Owocki, S.P. & Okazaki, A.T. (eds.), Active OB-Stars: Laboratories for Stellar and Circumstellar Physics, ASP Conference Series, Vol.361, p.428
• Interaction between the Viscous Decretion Disk and the Neutron Star in Be/X-ray Binaries
  A.T. Okazaki & K. Hayasaki, 2007, In: Štefl, .S, Owocki, S.P. & Okazaki, A.T. (eds.), Active OB-Stars: Laboratories for Stellar and Circumstellar Physics, ASP Conference Series, Vol.361, p.395
• V/R Variations of Binary Be Stars
  S. Štefl, A.T. Okazaki, T. Rivinius & D. Baade, 2007, In: Štefl, .S, Owocki, S.P. & Okazaki, A.T. (eds.), Active OB-Stars: Laboratories for Stellar and Circumstellar Physics, ASP Conference Series, Vol.361, p.274
• Theory vs. Observation of Circumstellar Disks and Their Formation
  A.T. Okazaki, 2007, In: Štefl, .S, Owocki, S.P. & Okazaki, A.T. (eds.), Active OB-Stars: Laboratories for Stellar and Circumstellar Physics, ASP Conference Series, Vol.361, p.230

2006

• On periodic X-ray outbursts in Be/X-ray binaries
  A.T. Okazaki & K. Hayasaki, 2006, In: Wilson, A. (ed.), The X-ray Universe 2005, ESA Publications Division, p.171

2005

• Dynamics of Be-star decretion disks in Be/X-ray binaries
  A.T. Okazaki, 2005, In: Ignace, R. & Gayley, K. (eds.),
  The Nature and Evolution of Disks around Hot Stars, ASP Conference Series, Vol.337, p.285
• Non-axisymmetric Structure of Accretion Disks in Be/X-ray Binaries
  K. Hayasaki & A.T. Okazaki, 2005, In: Interacting Binaries: Accretion, Evolution and Outcome
  astro-ph

2004

• Formation and Dissipation of Viscous Disks around Be Stars
  A.T. Okazaki, 2004
  In: Maeder, A. and Eenens, P. (eds.), IAU Symp. 215 on Stellar Rotation, ASP, San Francisco, p.529
• Mass-Capture Rate by the Neutron Star in Be/X-Ray Binaries
  A.T. Okazaki & K. Hayasaki, 2004, In: Tovmassian, G. and Sion, E. (eds.) IAU Colloq. 194 on Compact Binaries in the Galaxy and Beyond,
  Revista Mexicana de Astronomia y Astrofisica, Serie de Cinferencias, 20, 144
• Disk Structure around the Neutron Star in Be/X-Ray Binaries
  K. Hayasaki and A.T. Okazaki, 2004, In: Tovmassian, G. and Sion, E. (eds.) IAU Colloq. 194 on Compact Binaries in the Galaxy and Beyond,
  Revista Mexicana de Astronomia y Astrofisica, Serie de Cinferencias, 20, 230
• Accretion onto the Neutron Star in Be/X-Ray Binaries
  K. Hayasaki and A.T. Okazaki, 2004, In: Camilo, F. and Gaensler, B.M. (eds.) IAU Symp. 218 on Young Neutron Stars and Their Environments, ASP, San Francisco, p.449
  astro-ph

2002

• On the Equatorial Mass-Loss Rate of Be Stars
  A.T. Okazaki 2002, In: Aerts, C., Bedding, T., Christensen-Dalsgaard, J. (eds.) IAU Colloquium No.185 on Radial and Nonradial Pulsations as Probes of Stellar Physics, ASP Conference Series, ASP, San Francisco, in press
  [ gzipped PostScript (49KB) ]
• Evolution of truncated decretion disks in Be/X-ray binaries
  A.T. Okazaki, M.R. Bate, G.I. Ogilvie, J.E. Pringle 2002, In: Gansicke, R.T., Beuermann, K., Reinsch, K. (eds.) The Physics of Cataclysmic Variables and Related Objects, ASP Conference Series Vol.261, ASP, San Francisco, p.519
  [ gzipped PostScript (83KB) ]

2001

• Origin of the X-ray Activity of Be/X-Ray Binaries
  A.T. Okazaki & I. Negueruela, 2001, In: Giacconi, R., Stella, L., Serio, S. (eds.) X-Ray Astronomy 2000, ASP Conference Series Vol.234, ASP, San Francisco, p.281
  [ gzipped PostScript (164KB) ]
• Resonant Truncation of Be Disks and Type I Outbursts in Be/X-Ray Binaries
  A.T. Okazaki & I. Negueruela, 2001, In: White, N., Malaguti, G., Palumbo, G. (eds.) X-Ray Astronomy 1999: Stellar Endpoints, AGN and the Diffuse Background, AIP Conference proceedings Vol.599, AIP, new York, p.810
  [ gzipped PostScript (125KB) ]
• Theory of Global Disk Oscillations
  A.T. Okazaki, 2001, In: Smith M.A., Henrichs H.F., Fabregat J., eds, The Be Phenomenon in Early-Type Stars, IAU Colloq. 175, ASP Conf. Ser. Vol.214 (ASP, San Francisco) p.409
  [ gzipped PostScript (22KB) ]

Older Publications

A list of older publications is also available.