Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...158...89i&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 158, no. 1-2, April 1986, p. 89-96.
Astronomy and Astrophysics
Astronomy
20
Infrared Astronomy, Infrared Astronomy Satellite, Planetary Nebulae, Cosmic Dust, Far Infrared Radiation, Ionized Gases, Luminosity, Optical Thickness, Radiant Flux Density, Temperature Distribution
Scientific paper
Far Infrared (FIR) photometric data at 12, 25, 60, and 100 μm from the Infrared Astronomical Satellite (IRAS) on 46 optically faint planetary nebulae are used with related data on radio fluxes, angular sizes and distances to determine their nebular parameters such as dust temperature, total infrared flux, infrared excesses (IRE), IR luminosity, mass of dust and optical depth at 25 μm. The temperature of dust grains emitting FIR in these nebulae ranges from 60 - 240K as in bright nebulae (Pottasch et al., 1984). The nebulae are all optically thin at 25 μm. The optical depth at 25 μm, τ25, decreases when the size of the nebula increases, and is seen to be well correlated with it. Also the infrared luminosity of these planetary nebulae is correlated with the radio luminosity (at 5 GHz). The temperature of the dust in these nebulae and the infrared luminosity appear to decrease as the nebular size increases.
No associations
LandOfFree
Study of IRAS observations of faint planetary nebulae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Study of IRAS observations of faint planetary nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Study of IRAS observations of faint planetary nebulae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1101036