CORONOGRAPHIC IMAGING OF THE BIPOLAR NEBULA AROUND THE LUMINOUS BLUE VARIABLE R127

Citation
M. Clampin et al., CORONOGRAPHIC IMAGING OF THE BIPOLAR NEBULA AROUND THE LUMINOUS BLUE VARIABLE R127, The Astrophysical journal, 410(1), 1993, pp. 120000035-120000038
Citations number
30
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
0004637X
Volume
410
Issue
1
Year of publication
1993
Part
2
Pages
120000035 - 120000038
Database
ISI
SICI code
0004-637X(1993)410:1<120000035:CIOTBN>2.0.ZU;2-L
Abstract
New images of the nebula surrounding the luminous blue variable (LBV) R127 have been obtained with the Johns Hopkins Adaptive Optics Coronog raph. These images reveal, for the first time, the detailed morphology of the nebula and show it to be highly asymmetric with large variatio ns in surface brightness. The nebula has linear dimensions of 1.9 x 2. 2 pc, assuming a distance to the LMC of 51.2 kpc. The nebular mass, ca lculated from the integrated Halpha flux, is 3.1 M., which is similar to that of the AG Carinae nebula. The coronographic images of the R127 nebula support a recent model of R127 which suggests that an equatori al circumstellar disk is responsible for the observed polarimetric and spectroscopic properties of the star (Schulte-Ladbeck et al. 1993). T he images also suggest an evolutionary link between the mechanism resp onsible for the mass-loss episode which created the nebula and the cur rent mass-loss properties of the system.