Line-profile variations of non-radial adiabatic pulsations of rotating stars. III. On the alleged misidentification of tesseral modes.

Details Line-profile variations of non-radial adiabatic pulsations of rotating stars. III. On the alleged misidentification of tesseral modes. Line-profile variations of non-radial adiabatic pulsations of rotating stars. III. On the alleged misidentification of tesseral modes.

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...317..742t&link_type=abstract

Astronomy and Astrophysics, v.317, p.742-748

Astronomy and Astrophysics

Astrophysics

12

Stars: Early-Type, Oscillations, Rotation, Line: Profiles, Stars Individual: {Eta} Cen

Scientific paper

We use a model of a non-radially, adiabatically pulsating rotating star to generate time series of absorption line profiles. We analyse the spectral time series of a tesseral mode with pulsation parameters l=2 and m=-1, to obtain amplitude and phase diagrams as a function of position in the line profile. We investigate whether the phase diagrams can be used to identify the pulsation parameters l and |m| of this mode. As opposed to the findings of Reid & Aerts (1993A&A...279L..25R), we find that the effects of the Coriolis force do not hinder the identification of the degree l of the pulsation mode, but that the exact value of i=90deg that they used does. We show that for an inclination angle just slightly different from 90deg the chances for an erroneous identification of the degree l of the l=2, m=-1 pulsation mode, by means of a spectroscopical phase diagram, are very small. We also discuss the interpretation of observed line-profile variations in the Be star η Cen, where a tesseral mode with l=7 and m=|6| might be present.

Affiliated with

Also associated with

No associations

Rating

Line-profile variations of non-radial adiabatic pulsations of rotating stars. III. On the alleged misidentification of tesseral modes. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Line-profile variations of non-radial adiabatic pulsations of rotating stars. III. On the alleged misidentification of tesseral modes., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Line-profile variations of non-radial adiabatic pulsations of rotating stars. III. On the alleged misidentification of tesseral modes. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1771655