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Advances in Astronomy
Volume 2014, Article ID 270848, 8 pages
http://dx.doi.org/10.1155/2014/270848
Review Article

Dusty Blue Supergiants: News from High-Angular Resolution Observations

1European Southern Observatory, Alonso de Cordova 3107, Casilla, Vitacura, 19001 Santiago, Chile
2School of Physics & Astronomy, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
3Armagh Observatory, College Hill, Armagh BT61 9DG, UK

Received 21 January 2014; Accepted 14 March 2014; Published 4 May 2014

Academic Editor: Lydia Cidale

Copyright © 2014 W. J. de Wit et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. F.-J. Zickgraf and R. E. Schulte-Ladbeck, “Polarization characteristics of galactic B[e] stars,” Astronomy & Astrophysics, vol. 214, no. 1-2, pp. 274–284, 1989. View at Google Scholar
  2. R. D. Oudmaijer and J. E. Drew, “Hα spectropolarimetry of B[e] and Herbig Be stars,” Monthly Notices of the Royal Astronomical Society, vol. 305, no. 1, pp. 166–180, 1999. View at Google Scholar
  3. R. D. Oudmaijer, D. Baines, J. M. Porter, and M. Pozzo, “Spectro-astrometry of Herbig Ae/Be stars,” in Stars with the B[e] Phenomenon, M. Kraus and A. S. Miroshnichenko, Eds., vol. 355 of Astronomical Society of the Pacific Conference Series, pp. 99–106, 2006. View at Google Scholar
  4. H. J. G. L. M. Lamers, F.-J. Zickgraf, D. de Winter, L. Houziaux, and J. Zorec, “An improved classification of B[e]-type stars,” Astronomy & Astrophysics, vol. 340, no. 1, pp. 117–128, 1998. View at Google Scholar · View at Scopus
  5. F.-J. Zickgraf, B. Wolf, O. Stahl, C. Leitherer, and G. Klare, “The hybrid spectrum of the LMC hypergiant R126,” Astronomy & Astrophysics, vol. 143, no. 2, pp. 421–430, 1985. View at Google Scholar
  6. F.-J. Zickgraf, B. Wolf, C. Leitherer, I. Appenzeller, and O. Stahl, “B[e]-supergiants of the Magellanic Clouds,” Astronomy & Astrophysics, vol. 163, no. 1-2, pp. 119–134, 1986. View at Google Scholar
  7. F.-J. Zickgraf, “B[e] supergiants in the Magellanic Clouds,” in Stars with the B[e] Phenomenon, M. Kraus and A. S. Miroshnichenko, Eds., vol. 355 of Astronomical Society of the Pacific Conference Series, p. 135, 2006. View at Google Scholar
  8. F.-J. Zickgraf, “Discussion session: is there an evolutionary link between B[e] supergiants and LBVs?” in Stars with the B[e] Phenomenon, M. Kraus and A. S. Miroshnichenko, Eds., vol. 355 of Astronomical Society of the Pacific Conference Series, p. 211, 2006. View at Google Scholar
  9. M. Kraus, “The pre- versus post-main sequence evolutionary phase of B[e] stars. Constraints from 13CO band emission,” Astronomy & Astrophysics, vol. 494, no. 1, pp. 253–262, 2009. View at Publisher · View at Google Scholar · View at Scopus
  10. J. S. Vink, I. Brott, G. Gräfener, N. Langer, A. de Koter, and D. J. Lennon, “The nature of B supergiants: clues from a steep drop in rotation rates at 22 000 K. The possibility of bi-stability braking,” Astronomy & Astrophysics, vol. 512, no. 8, article L7, 4 pages, 2010. View at Publisher · View at Google Scholar · View at Scopus
  11. I. Pelupessy, H. J. G. L. M. Lamers, and J. S. Vink, “The radiation driven winds of rotating B[e] supergiants,” Astronomy & Astrophysics, vol. 359, no. 2, pp. 695–706, 2000. View at Google Scholar · View at Scopus
  12. M. Curé, D. F. Rial, and L. Cidale, “Outflowing disk formation in B[e] supergiants due to rotation and bi-stability in radiation driven winds,” Astronomy & Astrophysics, vol. 437, no. 3, pp. 929–933, 2005. View at Publisher · View at Google Scholar · View at Scopus
  13. C. A. Gummersbach, F.-J. Zickgraf, and B. Wolf, “B[e] phenomenon extending to lower luminosities in the Magellanic Clouds,” Astronomy & Astrophysics, vol. 302, pp. 409–421, 1995. View at Google Scholar
  14. M. Kraus, M. B. Fernandes, and F. X. de Araújo, “Neutral material around the B[e] supergiant star LHA115-S 65: an outflowing disk or a detached Keplerian rotating disk?” Astronomy & Astrophysics, vol. 517, no. 3, article A30, 13 pages, 2010. View at Publisher · View at Google Scholar · View at Scopus
  15. F. Millour, “Circumstellar matter studied by spectrally-resolved interferometry,” in Circumstellar Dynamics at High Resolution, A. C. Carciofi and T. Rivinius, Eds., vol. 464 of Astronomical Society of the Pacific Conference Series, p. 15, 2012. View at Google Scholar
  16. O. Chesneau, “Observations of dusty torii and compact disks around evolved stars: the high spatial resolution infrared view,” in Proceedings of the Asymmetric Planetary Nebulae 5 Conference, France, Paris, 2011.
  17. S. Ekström, C. Georgy, P. Eggenberger et al., “Grids of stellar models with rotation I. Models from 0.8 to 120 M at solar metallicity (Z=0.014),” Astronomy & Astrophysics, vol. 537, article A146, 18 pages, 2012. View at Publisher · View at Google Scholar · View at Scopus
  18. H. Saio, C. Georgy, and G. Meynet, “Evolution of blue supergiants and α Cygni variables: puzzling CNO surface abundances,” Monthly Notices of the Royal Astronomical Society, vol. 433, no. 2, pp. 1246–1257, 2013. View at Publisher · View at Google Scholar
  19. C. Georgy, H. Saio, and G. Meynet, “The puzzle of the CNO abundances of α Cygni variables resolved by the Ledoux criterion,” Monthly Notices of the Royal Astronomical Society, 2013. View at Publisher · View at Google Scholar
  20. P. A. Crowther, D. J. Lennon, and N. R. Walborn, “Physical parameters and wind properties of galactic early B supergiants,” Astronomy & Astrophysics, vol. 446, no. 1, pp. 279–293, 2006. View at Publisher · View at Google Scholar · View at Scopus
  21. E. L. Wright, P. R. M. Eisenhardt, A. K. Mainzer et al., “The Wide-field Infrared Survey Explorer (WISE): mission description and initial on-orbit performance,” The Astronomical Journal, vol. 140, no. 6, pp. 1868–1881, 2010. View at Publisher · View at Google Scholar · View at Scopus
  22. A. Kaufer, O. Stahl, B. Wolf et al., “Long-term spectroscopic monitoring of BA-type supergiants. I. Hα line-profile variability,” Astronomy & Astrophysics, vol. 305, no. 3, pp. 887–901, 1996. View at Google Scholar · View at Scopus
  23. A. Heger and N. Langer, “The spin-up of contracting red supergiants,” Astronomy & Astrophysics, vol. 334, no. 1, pp. 210–220, 1998. View at Google Scholar · View at Scopus
  24. O. Chesneau, L. Dessart, D. Mourard et al., “Time, spatial, and spectral resolution of the Hα line-formation region of Deneb and Rigel with the VEGA/CHARA interferometer,” Astronomy & Astrophysics, vol. 521, no. 4, article A5, 13 pages, 2010. View at Publisher · View at Google Scholar
  25. D. J. Lennon, C. Trundle, I. Hunter et al., “B-type supergiants in the Magellanic Clouds,” in Hot and Cool: Bridging Gaps in Massive Star Evolution, C. Leitherer, P. D. Bennett, P. W. Morris, and J. T. van Loon, Eds., vol. 425 of Astronomical Society of the Pacific Conference Series, p. 23, 2010. View at Google Scholar
  26. W. Brandner, E. K. Grebel, Y.-H. Chu, and K. Weis, “Ring nebula and bipolar outflows associated with the B1.5 supergiant Sher 25 in NGC 3603,” The Astrophysical Journal Letters, vol. 475, no. 1, pp. L45–L48, 1997. View at Google Scholar · View at Scopus
  27. N. Smith, J. Bally, and J. Walawender, “And in the darkness bind them: equatorial rings, B[e] supergiants, and the waists of Bipolar Nebulae,” The Astronomical Journal, vol. 134, no. 2, pp. 846–859, 2007. View at Google Scholar · View at Scopus
  28. D. E. A. Nürnberger and T. Stanke, “Infrared observations of NGC 3603 II. A 11.9 µm and 18 µm survey,” Astronomy & Astrophysics, vol. 400, no. 1, pp. 223–239, 2003. View at Google Scholar · View at Scopus
  29. N. Smith, W. D. Arnett, J. Bally, A. Ginsburg, and A. V. Filippenko, “The ring nebula around the blue supergiant SBW1: pre-explosion snapshot of an SN 1987A twin,” Monthly Notices of the Royal Astronomical Society, vol. 429, no. 2, pp. 1324–1341, 2013. View at Publisher · View at Google Scholar
  30. S. M. Chita, N. Langer, J. van Marle, G. García-Segura, and A. Heger, “Multiple ring nebulae around blue supergiants,” Astronomy & Astrophysics, vol. 488, no. 2, pp. L37–L41, 2008. View at Publisher · View at Google Scholar · View at Scopus
  31. S. J. Smartt, D. J. Lennon, R. P. Kudritzki, F. Rosales, R. S. I. Ryans, and N. Wright, “The evolutionary status of Sher 25—implications for blue supergiants and the progenitor of SN 1987A,” Astronomy & Astrophysics, vol. 391, no. 3, pp. 979–991, 2002. View at Google Scholar · View at Scopus
  32. M. A. Hendry, S. J. Smartt, E. D. Skillman et al., “The blue supergiant Sher 25 and its intriguing hourglass nebula,” Monthly Notices of the Royal Astronomical Society, vol. 388, no. 3, pp. 1127–1142, 2008. View at Publisher · View at Google Scholar · View at Scopus
  33. M. Wittkowski, N. Langer, and G. Weigelt, “Diffraction-limited speckle-masking interferometry of the red supergiant VY CMa,” Astronomy & Astrophysics, vol. 340, no. 2, pp. L39–L42, 1998. View at Google Scholar · View at Scopus
  34. W. J. de Wit, R. D. Oudmaijer, T. Fujiyoshi et al., “A red supergiant nebula at 25 μm: arcsecond-scale mass-loss asymmetries of μ Cephei,” The Astrophysical Journal Letters, vol. 685, no. 1, pp. L75–L78, 2008. View at Publisher · View at Google Scholar · View at Scopus
  35. R. M. Humphreys, “Red supergiants and post-red supergiants—the evidence for high mass loss events,” EAS Publications Series, vol. 60, pp. 185–190, 2013. View at Publisher · View at Google Scholar
  36. N. Smith, R. D. Gehrz, R. Campbell et al., “Episodic mass loss in binary evolution to the Wolf-Rayet phase: keck and HST proper motions of RY Scuti’s nebula,” Monthly Notices of the Royal Astronomical Society, vol. 418, no. 3, pp. 1959–1972, 2011. View at Publisher · View at Google Scholar · View at Scopus
  37. M. Kraus and A. S. Miroshnichenko, Eds., Stars with the B[e] Phenomenon, vol. 355 of Astronomical Society of the Pacific Conference Series, 2006.
  38. P. Haguenauer, J. Alonso, P. Bourget et al., “The very large telescope interferometer: 2010 edition,” in Proceedings of the Optical and Infrared Interferometry II, vol. 7734 of Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, San Diego, Calif, USA, July 2010. View at Publisher · View at Google Scholar
  39. T. A. ten Brummelaar, H. A. McAlister, S. T. Ridgway et al., “First results from the CHARA Array. II. A description of the instrument,” The Astrophysical Journal, vol. 628, no. 1, pp. 453–465, 2005. View at Publisher · View at Google Scholar · View at Scopus
  40. A. S. Miroshnichenko, K. S. Bjorkman, M. Grosso, K. Hinkle, H. Levato, and F. Marang, “Properties of galactic B[e] supergiants. IV. Hen 3-298 and Hen 3-303,” Astronomy & Astrophysics, vol. 436, no. 2, pp. 653–659, 2005. View at Publisher · View at Google Scholar · View at Scopus
  41. J. H. Kastner, C. Buchanan, R. Sahai, W. J. Forrest, and B. A. Sargent, “The dusty circumstellar disks of B[e] supergiants in the Magellanic Clouds,” The Astronomical Journal, vol. 139, no. 5, pp. 1993–2002, 2010. View at Publisher · View at Google Scholar · View at Scopus
  42. L. B. F. M. Waters, “Circumstellar dust in massive stars,” in Hot and Cool: Bridging Gaps in Massive Star Evolution, C. Leitherer, P. D. Bennett, P. W. Morris, and J. T. van Loon, Eds., vol. 425 of Astronomical Society of the Pacific Conference Series, p. 267, 2010. View at Google Scholar
  43. A. P. Marston and B. McCollum, “Extended shells around B[e] stars. Implications for B[e] star evolution,” Astronomy & Astrophysics, vol. 477, no. 1, pp. 193–202, 2008. View at Publisher · View at Google Scholar · View at Scopus
  44. M. E. Oksala, M. Kraus, L. S. Cidale, M. F. Muratore, and M. B. Fernandes, “Probing the ejecta of evolved massive stars in transition. A VLT/SINFONI K-band survey,” Astronomy & Astrophysics, vol. 558, article A17, 20 pages, 2013. View at Publisher · View at Google Scholar
  45. A. Lenorzer, A. de Koter, and L. B. F. M. Waters, “Hydrogen infrared recombination lines as a diagnostic tool for the geometry of the circumstellar material of hot stars,” Astronomy & Astrophysics, vol. 386, no. 1, pp. L5–L8, 2002. View at Google Scholar · View at Scopus
  46. J. M. Porter, “On the optical-infra-red continuum emission from equatorial discs of supergiant B[e] stars,” Astronomy & Astrophysics, vol. 398, no. 2, pp. 631–638, 2003. View at Google Scholar · View at Scopus
  47. M. Kraus, M. B. Fernandes, and F. X. de Araújo, “On the hydrogen neutral outflowing disks of B[e] supergiants,” Astronomy & Astrophysics, vol. 463, no. 2, pp. 627–634, 2007. View at Publisher · View at Google Scholar · View at Scopus
  48. A. C. Carciofi, A. S. Miroshnichenko, and J. E. Bjorkman, “Toward understanding the B[e] phenomenon. IV. Modeling of IRAS 00470+6429,” The Astrophysical Journal, vol. 721, no. 2, pp. 1079–1089, 2010. View at Publisher · View at Google Scholar · View at Scopus
  49. J. Zsargó, D. J. Hillier, and L. N. Georgiev, “Axi-symmetric models of B[e] supergiants. I. The effective temperature and mass-loss dependence of the hydrogen and helium ionization structure,” Astronomy & Astrophysics, vol. 478, no. 2, pp. 543–551, 2008. View at Publisher · View at Google Scholar · View at Scopus
  50. A. D. de Souza, T. Driebe, O. Chesneau et al., “AMBER/VLTI and MIDI/VLTI spectro-interferometric observations of the B[e] supergiant CPD-57° 2874. Size and geometry of the circumstellar envelope in the near- and mid-IR,” Astronomy & Astrophysics, vol. 464, no. 1, pp. 81–86, 2007. View at Publisher · View at Google Scholar · View at Scopus
  51. A. D. de Souza, P. Bendjoya, G. Niccolini et al., “Fast ray-tracing algorithm for circumstellar structures (FRACS): II. Disc parameters of the B[e] supergiant CPD-57° 2874 from VLTI/MIDI data,” Astronomy & Astrophysics, vol. 525, no. 13, article A22, 11 pages, 2011. View at Publisher · View at Google Scholar · View at Scopus
  52. L. S. Cidale, M. B. Fernandes, I. Andruchow et al., “Observational constraints for the circumstellar disk of the B[e] star CPD-52 9243,” Astronomy & Astrophysics, vol. 548, article A72, 9 pages, 2012. View at Publisher · View at Google Scholar
  53. Y. Wang, G. Weigelt, A. Kreplin et al., “AMBER/VLTI observations of the B[e] star MWC 300,” Astronomy & Astrophysics, vol. 545, article L10, 4 pages, 2012. View at Publisher · View at Google Scholar
  54. A. S. Miroshnichenko, H. Levato, K. S. Bjorkman et al., “Properties of galactic B[e] supergiants. III. MWC 300,” Astronomy & Astrophysics, vol. 417, no. 2, pp. 731–743, 2004. View at Publisher · View at Google Scholar · View at Scopus
  55. J. H. Kastner, C. L. Buchanan, B. Sargent, and W. J. Forrest, “Spitzer spectroscopy of dusty disks around B[e] hypergiants in the large Magellanic Cloud,” The Astrophysical Journal Letters, vol. 638, no. 1, pp. L29–L32, 2006. View at Publisher · View at Google Scholar · View at Scopus
  56. J. S. Clark, B. W. Ritchie, and I. Negueruela, “The circumstellar environment and evolutionary state of the supergiant B[e] star Wd1-9,” Astronomy & Astrophysics, vol. 560, article A11, 16 pages, 2013. View at Publisher · View at Google Scholar
  57. P. J. McGregor, A. R. Hyland, and D. J. Hillier, “CO overtone emission from Magellanic Cloud supergiants,” The Astrophysical Journal, vol. 334, pp. 639–656, 1988. View at Publisher · View at Google Scholar
  58. P. J. McGregor, A. R. Hyland, and M. T. McGinn, “Emission-line stars in the Magellanic Clouds—infrared spectroscopy of B[e] and Ofpe/WN9 stars,” Astronomy & Astrophysics, vol. 223, no. 1-2, pp. 237–240, 1989. View at Google Scholar
  59. F. Muratore, M. Kraus, W. J. de Wit, and L. Cidale, “CO emission in supergiant B[e] stars,” In press.
  60. M. Kraus, E. Krügel, C. Thum, and T. R. Geballe, “CO band emission from MWC 349 . I. First overtone bands from a disk or from a wind?” Astronomy & Astrophysics, vol. 362, no. 1, pp. 158–168, 2000. View at Google Scholar · View at Scopus
  61. H. E. Wheelwright, W. J. de Wit, G. Weigelt, R. D. Oudmaijer, and J. D. Ilee, “AMBER and CRIRES observations of the binary sgB[e] star HD 327083: evidence of a gaseous disc traced by CO bandhead emission,” Astronomy & Astrophysics, vol. 543, article A77, 9 pages, 2012. View at Publisher · View at Google Scholar
  62. R. Lachaume, “On marginally resolved objects in optical interferometry,” Astronomy & Astrophysics, vol. 400, no. 2, pp. 795–803, 2003. View at Google Scholar · View at Scopus
  63. F. Millour, A. Meilland, O. Chesneau et al., “Imaging the spinning gas and dust in the disc around the supergiant A[e] star HD 62623,” Astronomy & Astrophysics, vol. 526, no. 14, article A107, 8 pages, 2011. View at Publisher · View at Google Scholar · View at Scopus
  64. A. Liermann, M. Kraus, O. Schnurr, and M. B. Fernandes, “The 13Carbon footprint of B[e] supergiants,” Monthly Notices of the Royal Astronomical Society, vol. 408, no. 1, pp. L6–L10, 2010. View at Publisher · View at Google Scholar · View at Scopus
  65. A. Aret, M. Kraus, M. F. Muratore, and M. B. Fernandes, “A new observational tracer for high-density disc-like structures around B[e] supergiants,” Monthly Notices of the Royal Astronomical Society, vol. 423, no. 1, pp. 284–293, 2012. View at Publisher · View at Google Scholar · View at Scopus
  66. A. S. Miroshnichenko, “Photometry, polarimetry and interferometry of B[e] stars variability,” in B[e] Stars, A. M. Hubert and C. Jaschek, Eds., vol. 233, p. 145, Astrophysics and Space Science Library, 1998. View at Google Scholar
  67. N. D. Thureau, J. D. Monnier, W. A. Traub et al., “Imaging the asymmetric dust shell around CI Cam with long baseline optical interferometry,” Monthly Notices of the Royal Astronomical Society, vol. 398, no. 3, pp. 1309–1316, 2009. View at Publisher · View at Google Scholar · View at Scopus
  68. J. S. Clark, A. S. Miroshnichenko, V. M. Larionov et al., “Photometric observations of the radio bright B[e]/X-ray binary CI Cam,” Astronomy & Astrophysics, vol. 356, no. 1, pp. 50–62, 2000. View at Google Scholar · View at Scopus
  69. J. S. Clark, E. S. Bartlett, M. J. Coe et al., “The supergiant B[e] star LHA 115-S 18—binary and/or luminous blue variable?” Astronomy & Astrophysics, vol. 560, article A10, 10 pages, 2013. View at Publisher · View at Google Scholar
  70. M. E. Oksala, M. Kraus, M. L. Arias et al., “The sudden appearance of CO emission in LHA 115-S 65,” Monthly Notices of the Royal Astronomical Society, vol. 426, no. 1, pp. L56–L60, 2012. View at Publisher · View at Google Scholar
  71. T. Rivinius, A. C. Carciofi, and C. Martayan, “Classical Be stars. Rapidly rotating B stars with viscous Keplerian decretion disks,” The Astronomy and Astrophysics Review, vol. 21, no. 1, article 69, 2013. View at Publisher · View at Google Scholar
  72. W. J. de Wit, J.-P. Beaulieu, H. J. G. L. M. Lamers, E. Lesquoy, and J.-B. Marquette, “A quest for PMS candidate stars at low metallicity: variable HAe/Be and Be stars in the Small Magellanic Cloud,” Astronomy & Astrophysics, vol. 410, no. 1, pp. 199–216, 2003. View at Publisher · View at Google Scholar · View at Scopus
  73. W. J. de Wit, H. J. G. L. M. Lamers, J. B. Marquette, and J. P. Beaulieu, “The remarkable light and colour variability of Small Magellanic Cloud Be stars,” Astronomy & Astrophysics, vol. 456, no. 3, pp. 1027–1035, 2006. View at Publisher · View at Google Scholar · View at Scopus
  74. A. Meilland, F. Millour, S. Kanaan et al., “First spectro-interferometric survey of Be stars. I. Observations and constraints on the disk geometry and kinematics,” Astronomy & Astrophysics, vol. 538, article A110, 14 pages, 2012. View at Publisher · View at Google Scholar · View at Scopus
  75. H. E. Wheelwright, J. E. Bjorkman, R. D. Oudmaijer, A. C. Carciofi, K. S. Bjorkman, and J. M. Porter, “Probing the properties of Be star discs with spectroastrometry and NLTE radiative transfer modelling: β CMi,” Monthly Notices of the Royal Astronomical Society, vol. 423, no. 1, pp. L11–L15, 2012. View at Publisher · View at Google Scholar
  76. R. D. Oudmaijer and A. M. Parr, “The binary fraction and mass ratio of Be and B stars: a comparative very large telescope/NACO study,” Monthly Notices of the Royal Astronomical Society, vol. 405, no. 4, pp. 2439–2446, 2010. View at Publisher · View at Google Scholar · View at Scopus
  77. H. E. Wheelwright, W. J. de Wit, R. D. Oudmaijer, and J. S. Vink, “VLTI/AMBER observations of the binary B[e] supergiant HD 327083,” Astronomy & Astrophysics, vol. 538, article A6, 8 pages, 2012. View at Publisher · View at Google Scholar · View at Scopus
  78. M. Kraus, M. E. Oksala, D. H. Nickeler et al., “Molecular emission from GG Carinae’s circumbinary disk,” Astronomy & Astrophysics, vol. 549, article A28, 7 pages, 2013. View at Publisher · View at Google Scholar
  79. A. Meilland, S. Kanaan, M. B. Fernandes et al., “Resolving the dusty circumstellar environment of the A[e] supergiant HD 62623 with the VLTI/MIDI,” Astronomy & Astrophysics, vol. 512, no. 12, article A73, 13 pages, 2010. View at Publisher · View at Google Scholar · View at Scopus
  80. J. S. Vink, A. de Koter, and H. J. G. L. M. Lamers, “On the nature of the bi-stability jump in the winds of early-type supergiants,” Astronomy & Astrophysics, vol. 350, no. 1, pp. 181–196, 1999. View at Google Scholar · View at Scopus
  81. H. Plets, C. Waelkens, and N. R. Trams, “The peculiar binary supergiant 3 puppis,” Astronomy & Astrophysics, vol. 293, pp. 363–370, 1995. View at Google Scholar
  82. P. Marchiano, E. Brandi, M. F. Muratore, C. Quiroga, O. E. Ferrer, and L. G. García, “The spectroscopic orbits and physical parameters of GG Carinae,” Astronomy & Astrophysics, vol. 540, article A91, 9 pages, 2012. View at Publisher · View at Google Scholar · View at Scopus
  83. N. Soker, “Eccentric orbits of close companions to asymptotic giant branch stars,” Astronomy & Astrophysics, vol. 357, no. 2, pp. 557–560, 2000. View at Google Scholar · View at Scopus
  84. E. Moreno, G. Koenigsberger, and D. M. Harrington, “Eccentric binaries. Tidal flows and periastron events,” Astronomy & Astrophysics, vol. 528, article A48, 15 pages, 2011. View at Publisher · View at Google Scholar · View at Scopus
  85. D. C. Gielen, H. van Winckel, M. Min, L. B. F. M. Waters, and T. L. Evans, “SPITZER survey of dust grain processing in stable discs around binary post-AGB stars,” Astronomy & Astrophysics, vol. 490, no. 2, pp. 725–735, 2008. View at Publisher · View at Google Scholar · View at Scopus
  86. H. van Winckel, T. L. Evans, M. Briquet et al., “Post-AGB stars with hot circumstellar dust: binarity of the low-amplitude pulsators,” Astronomy & Astrophysics, vol. 505, no. 3, pp. 1221–1232, 2009. View at Publisher · View at Google Scholar · View at Scopus
  87. T. Dermine, R. G. Izzard, A. Jorissen, and H. van Winckel, “Eccentricity-pumping in post-AGB stars with circumbinary discs,” Astronomy & Astrophysics, vol. 551, article A50, 7 pages, 2013. View at Publisher · View at Google Scholar
  88. R. D. Oudmaijer, B. Davies, W.-J. de Wit, and M. Patel, “Post-red supergiants,” in The Biggest, Baddest, Coolest Stars, D. G. Luttermoser, B. J. Smith, and R. E. Stencel, Eds., vol. 412 of Astronomical Society of the Pacific Conference Series, p. 17, 2009. View at Google Scholar
  89. R. D. Oudmaijer and W. J. de Wit, “Neutral and ionised gas around the post-red supergiant IRC+10 420 at AU size scales,” Astronomy & Astrophysics, vol. 551, article A69, 11 pages, 2013. View at Publisher · View at Google Scholar
  90. M. B. Fernandes, A. Meilland, P. Bendjoya et al., “The Galactic unclassified B[e] star HD 50138: II. Interferometric constraints on the close circumstellar environment,” Astronomy & Astrophysics, vol. 528, article A20, 9 pages, 2011. View at Publisher · View at Google Scholar · View at Scopus
  91. H. E. Wheelwright, G. Weigelt, A. Caratti o Garatti, and R. G. Lopez, “HD 85567: a Herbig B[e] star or an interacting B[e] binary?. Resolving HD 85567’s circumstellar environment with the VLTI and AMBER,” Astronomy & Astrophysics, vol. 558, article A116, 10 pages, 2013. View at Publisher · View at Google Scholar
  92. S. Kraus, N. Calvet, L. Hartmann et al., “On the nature of the Herbig B[e] star binary system V921 Scorpii: geometry and kinematics of the circumprimary disk on sub-AU scales,” The Astrophysical Journal, vol. 752, no. 1, article 11, 2012. View at Publisher · View at Google Scholar