Journal article
Coordinated monitoring of the eccentric O-star binary Iota Orionis: optical spectroscopy and photometry
Monthly notices of the Royal Astronomical Society, Vol.317(2), pp.333-342
09/11/2000
DOI: 10.1046/j.1365-8711.2000.03542.x
Abstract
With the objective of investigating the wind—wind collision phenomenon and supporting contemporaneous X-ray observations, we have organized a large-scale, coordinated optical monitoring campaign of the massive, highly eccentric O9 III+B1 III binary Iota Orionis. Successfully separating the spectra of the components, we refine the orbital elements and confirm the rapid apsidal motion in the system. We also see strong interaction between the components during periastron passage and detect phase-locked variability in the spectrum of the secondary star. However, we find no unambiguous signs of the bow shock crashing on the surface of the secondary, despite the predictions of hydrodynamic simulations. Combining all available photometric data, we find rapid, phase-locked variations and model them numerically, thus restricting the orbital inclination to 50°≲i≲70°.
Details
- Title: Subtitle
- Coordinated monitoring of the eccentric O-star binary Iota Orionis: optical spectroscopy and photometry
- Creators
- Sergey V. Marchenko - Université de MontréalGregor Rauw - Institut d'Astrophysique et de Géophysique, Université de Liège, 5, Avenue de Cointe, B-4000 Liège, BelgiumEleonora A. Antokhina - Moscow State University, Sternberg State Astronomical Institute, Universitetskij Prospect 13, 119899, Moscow, RussiaIgor I. Antokhin - Moscow State University, Sternberg State Astronomical Institute, Universitetskij Prospect 13, 119899, Moscow, RussiaDominique Ballereau - Observatoire de ParisJacques Chauville - Observatoire de ParisMichael F. Corcoran - Universities Space Research Association/Laboratory for High Energy Astrophysics, GSFC, Greenbelt, MD 20771, USARafael Costero - Instituto de Astronomía, Universidad Nacional Autónoma de México, J. J. Tablada 1006, Colonia Lomas de Santa Maria, 58090 Morelia, Michoacán, MexicoJuan Echevarria - Instituto de Astronomía, Universidad Nacional Autónoma de México, J. J. Tablada 1006, Colonia Lomas de Santa Maria, 58090 Morelia, Michoacán, MexicoThomas Eversberg - Université de MontréalKen G. Gayley - University of Iowa, 203 van Allen Hall, Iowa City, IA 52245, USAGloria Koenigsberger - Instituto de Astronomía, Universidad Nacional Autónoma de México, J. J. Tablada 1006, Colonia Lomas de Santa Maria, 58090 Morelia, Michoacán, MexicoAnatoly S. Miroshnichenko - University of ToledoAnthony F. J. Moffat - Université de MontréalNidia I. Morrell - Observatorio de La Plata, 1900 La Plata, ArgentinaNancy D. Morrison - University of ToledoChristopher L. Mulliss - University of ToledoJulian M. Pittard - University of BirminghamIan R. Stevens - University of BirminghamJean-Marie Vreux - Institut d'Astrophysique et de Géophysique, Université de Liège, 5, Avenue de Cointe, B-4000 Liège, BelgiumJean Zorec - Institut d‧Astrophysique, 98bis boulevard Arago, 75014 Paris, France
- Resource Type
- Journal article
- Publication Details
- Monthly notices of the Royal Astronomical Society, Vol.317(2), pp.333-342
- Publisher
- Blackwell Science Ltd
- DOI
- 10.1046/j.1365-8711.2000.03542.x
- ISSN
- 0035-8711
- eISSN
- 1365-2966
- Language
- English
- Date published
- 09/11/2000
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428827202771
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