Skip to main content Accessibility help
×
Home

Effects of fast rotation on the wind of Luminous Blue Variables

  • Jose H. Groh (a1)

Abstract

While theoretical studies have long suggested a fast-rotating nature of Luminous Blue Variables (LBVs), observational confirmation of fast rotation was not detected until recently. Here I discuss the diagnostics that have allowed us to constrain the rotational velocity of LBVs: broadening of spectral lines and latitude-dependent variations of the wind density structure. While rotational broadening can be directly detected using high-resolution spectroscopy, long-baseline near-infrared interferometry is needed to directly measure the shape of the latitude-dependent photosphere that forms in a fast-rotating star. In addition, complex 2-D radiative transfer models need to be employed if one's goal is to constrain rotational velocities of LBVs. Here I illustrate how the above methods were able to constrain the rotational velocities of the LBVs AG Carinae, HR Carinae, and Eta Carinae.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Effects of fast rotation on the wind of Luminous Blue Variables
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Effects of fast rotation on the wind of Luminous Blue Variables
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Effects of fast rotation on the wind of Luminous Blue Variables
      Available formats
      ×

Copyright

References

Hide All
Busche, J. R. & Hillier, D. J. 2005, AJ, 129, 454
Clark, J. S., Larionov, V. M., & Arkharov, A. 2005, A&A, 435, 239
Conti, P. S. 1984, in: Maeder, A. & Renzini, A. (eds.), Observational Tests of the Stellar Evolution Theory, IAU Symposium 105, p. 233
Driebe, T., Groh, J. H., Hofmann, K.-H., Ohnaka, K. et al. 2009, A&A, 507, 301
Groh, J. H., Damineli, A., Hillier, D. J., Barbá, R. et al. 2009a, ApJ (Letters), 705, L25
Groh, J. H., Hillier, D. J., & Damineli, A. 2006, ApJ (Letters), 638, L33
Groh, J. H., Hillier, D. J., Damineli, A., Whitelock, P. A. et al. 2009b, ApJ, 698, 1698
Groh, J. H., Madura, T. I., Owocki, S. P., Hillier, D. J. et al. 2010, ApJ (Letters), 716, L223
Groh, J. H., Oliveira, A. S., & Steiner, J. E. 2008, A&A, 485, 245
Hillier, D. J., Davidson, K., Ishibashi, K., & Gull, T. 2001, ApJ, 553, 837
Humphreys, R. M. & Davidson, K. 1994, PASP, 106, 1025
Maeder, A. & Meynet, G. 1994, A&A, 287, 803
Maeder, A. & Meynet, G. 2000a, A&A, 361, 159
Maeder, A. & Meynet, G. 2000b, ARAA, 38, 143
Meynet, G. & Maeder, A. 2003, A&A, 404, 975
Owocki, S. P., Cranmer, S. R., & Gayley, K. G. 1996, ApJ (Letters), 472, L115
Owocki, S. P., Cranmer, S. R., & Gayley, K. G. 1998, Ap&SS, 260, 149
Smith, N. 2006, ApJ, 644, 1151
Smith, N., Davidson, K., Gull, T. R., Ishibashi, K. et al. 2003, ApJ, 586, 432
van Boekel, R., Kervella, P., Schöller, M., Herbst, T. et al. 2003, A&A, 410, L37
van Genderen, A. M. 2001, A&A, 366, 508
Weigelt, G., Kraus, S., Driebe, T., Petrov, R. G. et al. 2007, A&A, 464, 87
Wolf, B. 1989, A&A, 217, 87
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

Effects of fast rotation on the wind of Luminous Blue Variables

  • Jose H. Groh (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed