Skip to main content Accessibility help
×
Home

MCA1B - A dormant LBV in M33?

  • Paul A. Crowther (a1), Linda J. Smith (a1) and Allan J. Willis (a1)

Abstract

A detailed study of the Ofpe/WN9 candidate MCA1b in M33 (Willis et al. 1992) is presented, based on new high-resolution observations. We re-classify MCA1b as WN9-10 and determine its physical parameters (T * = 29 kK, logL/L = 5.9, log· = −4.0, v = 420 km s−1) and composition (H/He = 2.6, N/He = 0.003, C/N = 0.2) using the Wolf-Rayet standard model. Overall, MCA1b is very similar to the LMC stars R84 (WN9, Crowther et al. 1994) and R71 (LBV, Lennon et al. 1994) indicating a similar evolutionary status and metallicity.

    • 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.

      MCA1B - A dormant LBV in M33?
      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.

      MCA1B - A dormant LBV in M33?
      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.

      MCA1B - A dormant LBV in M33?
      Available formats
      ×

Copyright

References

Hide All
Allen, D.A., Hyland, A.R., Hillier, D.J. 1990, MNRAS 244, 706
Bohannan, B., Walborn, N.R. 1989, PASP 101, 639
Crowther, P.A., Hillier, D.J., Smith, L.J. 1994, A&A in press (Paper I)
Hillier, D.J. 1990, A&A 231, 116
Lennon, D.J., Wobig, D., Kudritzki, R.P., Stahl, O. 1994, Sp. Sci. Rev. 66, 207
Meynet, G., Maeder, A., Schaller, G., Schaerer, D., Charbonnel, C. 1994, A&A Suppl. 103, 97
Walborn, N.R. 1982, ApJ 256, 452
Willis, A.J., Schild, H., Smith, L.J. 1992, A&A 261, 419

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