This research has made use of the Simbad database, operated at CDS, Strasbourg, France. (H +[Nii]) and [Oiii] images for KeWe5, PN G348.9+04.6 KeWe3 is a rather large (2 arcmin) nebula consisting of two crescent shaped arcs forming a highly incomplete shell. The Atlas Galaktischer Nebel was published in 1990, but many of the objects presented have never been studied in any detail. You will only need to do this once. We provide radio spectral properties at high frequencies (1≤ν (GHz) ≤ 20) for 65 planetary nebulae in the Australia Telescope 20 GHz (AT20G) survey, identified from our list of sources that show flat-spectrum (α > -0.5) and are well resolved at 0.15 arcsec angular size scale. In some, mostly highly evolved, PNe, interaction with the environment—that is, the interstellar medium … The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Narrow-band continuum and emission-line photometry of 145 southern hemisphere PN are presented. The combination of images and spectra gives insight into the complex physics of the nebular plasma and its relation to the central star; see Members of the Innsbruck Institute for Astrophysics have, for a long time, been successfully engaged in the detection (more than 10% of the registered galactic PNe) and investigation of extended PNe (e.g., All observations have been obtained in 1998 February during the course of the Second Andes‐Carnegie Astronomy Summer School at Las Campanas Observatory (LCO), Chile. In contrast to other such nebulae such as the famous MyCn 18, the axis of the hourglass is not the long axis, which is perpendicular to it as the [N As a project for the Second Andes‐Carnegie Summer school we have observed a sample of PN candidates taken from the Atlas of Galactic Nebulae by We have been able to confirm five of the objects as true PNe, while another one probably is an H This work nicely demonstrate that many more relatively large and therefore close PNe remain to be found.
: New evolved planetary nebulae in the southern hemisphere 505 Fig.7. There are two main reasons for this. We show that this method very effectively identifies thermal sources like planetary nebulae (and H II regions). Bunbury Astronomy Evening 12 Oct A quick report on last weeks trip down to Aus to try out the new gear, … Planetary nebulae (PNe) are usually identified by narrowband imaging and/or optical spectroscopy. Thanks go to J. Köppen for providing the analysis software HOPPLA and for helpful discussions.It is a pleasure to thank Fundacion Andes and the Carnegie Institution of Washington for their support of the Andes‐Carnegie Summer School and the education of young Chilean astronomers.
We provide radio spectral properties at high frequencies (1≤ν (GHz) ≤ 20) for 65 planetary nebulae in the Australia Telescope 20 GHz (AT20G) survey, identified from our list of sources that show flat-spectrum (α > -0.5) and are well resolved at 0.15 arcsec angular size scale.
Agreement A scale allows for the comparison of sizes.First, all nebulae could be confirmed to be emission‐line objects by comparison with the off‐band images. Using the Tek 5 CCD detector we obtained a spectral resolution of 2 Å pixelIt may seem odd that new objects can still be found in this survey after so many years of intense searches but the discovery of new PNe on the Palomar Observatory Sky Survey (POSS) or ESO/SERC has been continuing at a more or less constant rate for many years now. Narrowband images have been obtained for all objects at the LCO 1 m Swope telescope. Using a combination of radio spectra, radio interferometric technique and infrared spectra from Wide-field Infrared Survey Explorer, we provide an effective method of identifying further candidates and we list a total of six new planetary nebulae that require follow-up.
From the third (southern) volume we have extracted a sample of PN candidates for study as a project during the Second Andes‐Carnegie Astronomy Summer School in 1998. The SITE 1 chip (2048 For spectroscopy we employed the modular spectrograph at the 2.5 m du Pont telescope covering the spectral range from 4000 Å to 7300 Å for six objects.