The near-infrared polarization of the pre-planetary nebula Frosty Leo
نویسندگان
چکیده
منابع مشابه
A near - infrared study of the planetary nebula NGC 2346 ?
This paper presents new near-infrared observations of the planetary nebula NGC 2346. The data include a broad K– band image, an image in the H2 vibrationally excited 1–0S(1) line and K band slit spectra at three positions in the nebula. In the H2 1–0S(1) line, the nebula is characterized by a central, bright torus, surrounded by weaker emission with a typical butterfly shape, as seen in Hα and ...
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متن کاملThe 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...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2020
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/staa1291