Open AccessRadio images of four luminous blue variable stars
Author(s) -
Duncan R.A.,
White S.M.
Publication year - 2002
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2002.05034.x
Subject(s) - physics , luminous blue variable , astrophysics , stars , nebula , variable star , astronomy , wavelength , telescope , h ii region , orion nebula , star formation , optics
We have used the Australia Telescope Compact Array to image four southern luminous blue variable stars: AG Car, He3‐519, HR Car and WRA 751, at wavelengths of 3 and 6 cm, and resolutions of 1 and 2 arcsec respectively. With the partial exception of HR Car, all radio images show an unresolved stellar core surrounded by a large ionized gaseous nebula, and agree well with published H α and [N ii ] optical images. The image of WRA 751 shows a stellar torus or disc. HR Car's radio image is unusual, and seems best explained by the presence of a hot binary companion.