Skip to main content Accessibility help
×
Home

The Production of Low Mass Carbon Stars; Carbon-rich Dredge Up or Oxygen-rich Mass Loss?

  • R.E. Stencel (a1), J.E. Pesce (a1) and K.M. MacGregor (a2)

Abstract

Conventional theory explains the origin of carbon stars as due to dredge up of carbon enriched material from the stellar core during helium flash events late in the life of solar mass AGB stars (e.g. Boothroyd and Sackmann 1988). This relatively efficient process however, seems to produce a larger C/O ratio than observed (Lambert et al. 1987). A secondary effect which could contribute to the appearance of carbon stars, is the selective removal of oxygen from the atmosphere by radiative force expulsion of oxygen rich dust grains (e.g. silicates like [Mg, Fe2SiO4]). We present calculations for this scenario which evaluate the degree of momentum coupling between the grains and gas under the thermodynamical conditions of AGB star atmospheres.

    • 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.

      The Production of Low Mass Carbon Stars; Carbon-rich Dredge Up or Oxygen-rich Mass Loss?
      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.

      The Production of Low Mass Carbon Stars; Carbon-rich Dredge Up or Oxygen-rich Mass Loss?
      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.

      The Production of Low Mass Carbon Stars; Carbon-rich Dredge Up or Oxygen-rich Mass Loss?
      Available formats
      ×

Copyright

References

Hide All
Boothroyd, A. and Sackmann, I.J. 1988 Ap.J. 328, 671.
Eaton, J. and Johnson, H. 1988 Ap.J. 325, 355.
Gilman, R. 1972 Ap.J. 178, 423.
Judge, P. 1986 M.N.R.A.S. 223, 239.
Kwok, S. 1975 Ap.J. 198, 583.
Lambert, D., Gustafsson, B., Eriksson, K. and Hinkle, K. 1986 Ap.J.Suppl. 62, 373.
Luck, R. and Lambert, D. 1985 Ap. J. 298, 782.
Muchmore, D., Nuth, J. and Stencel, R. 1987 Ap.J. 315, L141.
Parker, E. 1958 Ap.J. 128, 664.
Snijders, M., Batt, T., Seaton, M., Blades, J. and Morton, D. 1984 M.N.R.A.S. 211, 7P.
Snow, T., Buss, R., Gilra, D. and Swings, J. 1987 Ap.J. 321, 921.
Stencel, R. Pesce, J. and Bauer, W. 1988 A.J. 95, 141.
Stencel, R. Pesce, J. and Bauer, W. 1989 A.J. submitted.
Tsuji, T. 1988 A.& A. in press.
Woodrow, J. and Auman, J. 1982 Ap.J. 257, 247.

The Production of Low Mass Carbon Stars; Carbon-rich Dredge Up or Oxygen-rich Mass Loss?

  • R.E. Stencel (a1), J.E. Pesce (a1) and K.M. MacGregor (a2)

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