dc.contributor.author |
Ghosh, K |
|
dc.contributor.author |
Iyengar, K. V. K |
|
dc.contributor.author |
Ramsey, B. D |
|
dc.contributor.author |
Austin, R. A |
|
dc.date.accessioned |
2008-09-05T13:50:40Z |
|
dc.date.available |
2008-09-05T13:50:40Z |
|
dc.date.issued |
1999-08 |
|
dc.identifier.citation |
The Astronomical Journal, Vol. 118, No. 2, pp. 1061 - 1072 |
en |
dc.identifier.issn |
0004-6256 |
|
dc.identifier.uri |
http://hdl.handle.net/2248/3392 |
|
dc.description.abstract |
Near simultaneous optical spectroscopic (on four nights) and broadband linear continuum (B, V, R,and I bands) polarimetric (on seven nights) observations of 29 Be stars were carried out during 1993November-December. The program Be stars displayed wavelength dependence of intrinsic polarizations with no frequency dependence of polarimetric position angles. Some of the Be stars displayed long-term polarization variability. The Be and Be-shell stars could not be distinguished from one another solely on the basis of their polarization values. Full widths at half-maximum of the Hα profiles and the intrinsic linear continuum polarizations are closely correlated with the projected rotational velocities of the program stars. Photospheric-absorption-corrected equivalent widths of Hα profiles [W(alpha)] and the radii of Hα-emitting or -absorbing envelopes (R_e or R_a) are nonlinearly correlated with the intrinsic continuum polarizations of these stars. However, W(alpha) and R_e are linearly correlated. With large uncertainties, there is a trend of spectral dependence of polarization. Detailed discussion of these results is presented in this paper. |
en |
dc.language.iso |
en |
en |
dc.publisher |
The American Astronomical Society |
en |
dc.relation.uri |
http://www.iop.org/EJ/abstract/1538-3881/118/2/1061/ |
en |
dc.subject |
stars: emission-line, Be |
en |
dc.subject |
techniques: polarimetric |
en |
dc.subject |
techniques: spectroscopic |
en |
dc.title |
Near-simultaneous Spectroscopic and Broadband Polarimetric Observations of BE Stars |
en |
dc.type |
Article |
en |