HST WFPCII Observations of the Inner HR CAR Nebula

Details HST WFPCII Observations of the Inner HR CAR Nebula HST WFPCII Observations of the Inner HR CAR Nebula

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.6911h&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #69.11; Bulletin of the American Astronomical Society, Vol. 30, p.1351

Astronomy and Astrophysics

Astronomy

Scientific paper

We present HST WFPCII images of the HR Car taken in the light of Hα . HR Car has previously been found to have a bipolar morphology consisting of two main lobes extending about 18'' from the central star, which seem to originate from a bright inner nebula about 4'' in radius. The inner nebula, observed from the ground as a compact structure, is resolved into individual clumps asymmetrically concentrated in a region 2--5'' east of the the central star. A jet-like filament, extending approximately 6'', stretches away from the inner nebula to the south-east. We describe the utility of using an observing strategy with HST based on identical observations taken at multiple spacecraft roll angles in order to recover the structure of the inner HR Car nebula. In absence of a coronograph, this technique allows us to subtract the stellar point spread function and study for the first time the inner nebular regions, only partially accessible from the ground.

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