NGC and IC catalogs. I have been following Dana Patchick and Peter Goodhew for information about new planetary nebula. Recently, last month a new Planetary nebula was discovered in Pegasus and another one in Cassiopeia. I have the
For example, the Galileo orbiter, expected to begin mapping operations in the Jovian orbit in 1995, will carry a near-infrared mapping spectrometer (NIMS) capable of generating discrete images at numerous narrow wavelength intervals. The NIMS will be complemented by a multispectral imaging system ...
but the middle grey point is farther right than normal. Going for linear is a good starting point, but then I will adjust both the black and grey to bring out the details inside the nebula. often i end up black clipping the background noise to accentuate the dynamic...
Some have suggested that the rings of Saturn can be used as an analog for the solar nebula from which the solar system formed. Although Jupiter, Saturn, Uranus, and Neptune are now all known to have ring systems, they are all different, and no common theory can explain all of them. ...
resonance with an intense incoherent monochromatic VUV light under natural conditions, for example, inside planetary nebulae in the vicinity of bright stars. ... S Johansson,VS Letokhov - 《Jetp Letters》 被引量: 5发表: 2001年 PN G291.4-00.3: a new type i planetary nebula In the vicinity...
Sh 2-188 is an example of strong interaction between a planetary nebula (PN)\nand the interstellar medium (ISM). Its structure is postulated to be the result\nof motion through the ISM. We present new H$\\alpha$ images from the Isaac\nNewton Telescope Photometric H$\\alpha$ Survey of ...
A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.[2]The term "planetary nebula" is a misnomer because they are unrelated to planets or exoplanets. The...
Some of the most spectacularly images ever taken by the Hubble Space Telescope have been of NGC 6543, which display a wealth of exquisite details across a large complex eye-like structure. In total, the extended halo of the nebula spans some 6.5 arc minutes of apparent sky. However, through...
A possible explanation is that the xenon composition of the nebula changed over the lifetime of the disk due to changes in material supplied from the surrounding molecular cloud (Pepin et al., 1995; Pepin, 2003). An important parameter of this problem is the xenon-isotope composition of the...
star- and planet-formingnebulahas an impact on the structure of planetary systems. Most of theradial velocityplanets are detected around stars that are richer in heavier elements than the Sun. The lowest mass planets found around solar-type stars have masses comparable to Neptune and represent ...