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
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.