Skip to main content Accessibility help
×
Home

What do weak magnetic fields mean for magnetospheric accretion in Herbig AeBe star+disk systems?

  • A. N. Aarnio (a1), J. D. Monnier (a1), T. J. Harries (a2) and D. M. Acreman (a2)

Abstract

In the presently favored picture of star formation, mass is transferred from disk to star via magnetospheric accretion and out of the system via magnetically driven outflows. This magnetically mediated mass flux is a fundamental process upon which the evolution of the star, disk, and forming planetary system depends. Our current understanding of these processes is heavily rooted in young solar analogs, T Tauri Stars (TTS). We have come to understand recently, however, that the higher mass pre-main sequence (PMS) Herbig AeBe (HAeBe) stars have dramatically weaker dipolar fields than their lower mass counterparts. We present our current observational and theoretical efforts to characterize magnetospherically mediated mass transfer within HAeBe star+disk systems. We have gathered a rich spectroscopic and interferometric data set for several dozen HAeBe stars in order to measure accretion and mass loss rates, assess wind and magnetospheric accretion properties, and determine how spectral lines and interferometric visibilities are diagnostic of these processes. For some targets, we have observed spectral line variability and will discuss ongoing time-series spectroscopic efforts.

    • 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.

      What do weak magnetic fields mean for magnetospheric accretion in Herbig AeBe star+disk systems?
      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.

      What do weak magnetic fields mean for magnetospheric accretion in Herbig AeBe star+disk systems?
      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.

      What do weak magnetic fields mean for magnetospheric accretion in Herbig AeBe star+disk systems?
      Available formats
      ×

Copyright

References

Hide All
Alecian, E., Wade, G. A., Catala, C., Grunhut, J. H., Landstreet, J. D., Bagnulo, S., Böhm, T., Folsom, C. P., Marsden, S., & Waite, I. 2013, MNRAS, 429, 1001.
Basri, G., Marcy, G. W., & Valenti, J. A., 1992, ApJ, 390, 622.
Calvet, N. & Gullbring, E., 1998, ApJ, 509, 802.
Gregory, S. G., Donati, J.-F., Morin, J., Hussain, G. A. J., Mayne, N. J., Hillenbrand, L. A., & Jardine, M., 2012, ApJ, 755, 97.
Harries, T. J., 2000, MNRAS, 315, 722.
Herbig, G. H., 1960, ApJS, 4, 337.
Hernández, J., Calvet, N., Hartmann, L., Briceño, C., Sicilia-Aguilar, A., & Berlind, P., 2005, AJ, 129, 856.
Hubrig, S., Stelzer, B., Schöller, M., Grady, C., Schütz, O., Pogodin, M. A., Curé, M., Hamaguchi, K., & Yudin, R. V., 2009, A&A, 502, 283.
Johns-Krull, C. M., Valenti, J. A., & Koresko, C., 1999, ApJ, 516, 900.
Johns-Krull, C. M., 2007, ApJ, 664, 975.
Königl, A., 1991, ApJL 370 L39.
Kurosawa, R., Harries, T. J., & Symington, N. H., 2006, MNRAS, 370, 580.
Long, M., Romanova, M. M., & Lamb, F. K., 2012, New Astronomy, 17, 232.
Mendigutía, I., Mora, A., Montesinos, B., Eiroa, C., Meeus, G., Merín, B., & Oudmaijer, R. D. 2012, A&A 543, A59.
Reipurth, B., Pedrosa, A., & Lago, M. T. V. T. 1996, A&AS, 120, 229.
Tout, C. A. & Pringle, J. E., 1995, MNRAS, 272, 528.
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

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