Extra line-broadening in O-type stars

Bibcode
2011BlgAJ..17...54M
Markova, N.; Markov, H.; Puls, J.; Simón-Díaz, S.; Herrero, A.
Bibliographical reference

Bulgarian Astronomical Journal, Vol. 17, p. 54

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0
2011
Number of authors
5
IAC number of authors
2
Citations
2
Refereed citations
2
Description
Using original data and incorporating similar data from previous studies we investigated the effect of extra line-broadening in the atmosphere of Galactic O-stars. Our results suggest that if not taken into account, the extra broadening can lead to significant overestimation of the measured v sin i. The effect is not large (less than 30 kms), and does not seem to depend on the luminosity class. In addition, our results suggest that the extra line-broadening is coupled with the rotation although the latter does not seem to be the only parameter which determines the value of the extra broadening.
Type
Refereed

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