NGC 6881 is a planetary nebula, located in the constellation of Cygnus. It is formed of an inner nebula, estimated to be about one fifth of a light-year across, and a symmetrical structure that …

2023年4月17日 · The breathtaking butterfly-like planetary nebula NGC 6881 is visible here in an image taken by the NASA/ESA Hubble Space Telescope. Located in the constellation of …

2012年3月12日 · The breathtaking butterfly-like planetary nebula NGC 6881 is visible here in an image taken by the NASA/ESA Hubble Space Telescope. Located in the constellation of …

2007年9月27日 · Here we present a preliminary report of the analysis of new optical (Ha and [NII]) and near-IR (Brg and H2) images and intermediate resolution JHK spectra of this nebula. Our …

2020年10月27日 · The Raman-scattered He II features have been found in only five PNe so far, and, in particular, it is the first direct detection of an H I component in NGC 6881. The Raman …

NGC 6881 is a Planetary Nebula located in the constellation of Cygnus in the northern hemisphere. NGC 6881 is called NGC 6881 in the New General Catalogue (NGC). This …

2011年3月1日 · In this paper, we report on high angular resolution radio observations of the planetary nebula NGC 6881 obtained with the Very Large Array at a wavelength of 6 cm. The …

Curtis only hints at the structure and the confusion attendant on NGC 6881, a visually tiny planetary nebula in a crowded region of central Cygnus 3.5 degrees southwest of Sadr …

NGC 6881 is a Planetary Nebula in the Cygnus constellation. NGC 6881 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere. Given its …

2024年12月4日 · What is NGC 6881? NGC 6881 is an amazing sky wonder called a planetary nebula. It forms when stars like our Sun get old and throw off their outer parts. This leaves a …