Age and metallicity gradients of stellar clusters in the Magellanic Bridge
Chemical evolution and stellar populations of the galaxy, magellanic clouds and el...
| Full text | |
| Author(s): |
Magalhaes, A. M.
;
Melgarejo, R.
;
Pereyra, A.
;
Carciofi, A. C.
;
Kraus, M
;
Miroshnnichenko, AS
Total Authors: 6
|
| Document type: | Journal article |
| Source: | STARS WITH THE B[E] PHENOMENON, PROCEEDINGS; v. 355, p. 2-pg., 2006-01-01. |
| Abstract | |
We discuss the nature of the circumstellar envelopes around the B[e] supergiants (B[e]SG) in the Magellanic Clouds (MC). Contrary to those in the Galaxy, the MC B[e]SG have a well defined luminosity and can be considered members of a well defined class. We discuss spectroscopy and optical broadband polarimetry and spectropolarimetry data. These data show for the first time detailed changes in the polarization across several spectral features. We show that the envelopes of the B[e]SG are generally variable. Broadband polarimetry data show that the envelopes are definitely non-spherically symmetric and large non-axisymmetric ejections may occur. In addition to that, spectropolarimetry is coming of age as a tool to study the B[e]SG envelope structure. (AU) | |
| FAPESP's process: | 01/12589-1 - Stars, the interstellar medium and their interrelationships |
| Grantee: | Antônio Mário Magalhães |
| Support Opportunities: | Research Projects - Thematic Grants |