BVRI imaging polarimetry of the Frosty Leo nebula
نویسندگان
چکیده
منابع مشابه
The structure and momentum of multiple collimated outflows in the protoplanetary nebula Frosty Leo
We have discovered multiple jet-like features in the inner regions of the protoplanetary nebula (PPN) Frosty Leo, in optical images obtained with the Hubble Space Telescope. Frosty Leo is only the second PPN (after CRL2688) and the first oxygen-rich one, to show well-focussed jets close to the equatorial plane. The nebula consists of two bright compact structures embedded inside two large tenuo...
متن کاملThe icy side of Frosty Leo
An imaging study of the bipolar nebula Frosty Leo is presented. In particular, we have studied the effects of spatial distribution of H2O ice on the circumstellar environment. Using the Keck telescope with the NIRC infrared camera, we have recovered images at a wavelength of 3.08 μm within the prominent (attenuation of about 5 mag) water-ice absorption band, and in the adjacent quasi-continuum ...
متن کاملThe disrupted molecular envelope of Frosty Leo ,
We present maps of CO emission in the protoplanetary nebula Frosty Leo. Observations of the rotational transitions 12CO J = 2−1 and 1–0 have been obtained with the IRAM interferometer and the OVRO array. The molecular envelope of Frosty Leo is found to be complex and compact; most of the gas extends <∼6′′ and shows a structure that is very different to the extended optical nebula. It is compose...
متن کاملNear-infrared speckle imaging and AO polarimetry of the bipolar proto-planetary nebula
IRAS 09371+1212 is an oxygen-rich post-asymptotic giant branch (postAGB) star with an hourglass-like bipolar proto-planetary nebula (PPN), and has been well studied since its discovery because of several interesting peculiarities. It is also known as Frosty Leo because its unique, strong peak at 60 μm in the IRAS photometry was initially proposed to be due to emissions from water ice which cond...
متن کاملHST / NICMOS Imaging of the Planetary Nebula
Images of Hubble 12 were obtained with the HST/NICMOS instrument in the F110W, F164N, and F166N filters of NIC1, and the F160W, F187N, F190N, F212N, F215N filters of NIC2. The images show the structure of the inner “torus” and lobes much clearer than previous ground-based images. In particular, the [Fe II] lobes are clearly resolved and shown to be distinct from the H2 emission structures. Appa...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1994
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/268.3.615