Far infrared emission from three new planetary nebulae

Details Far infrared emission from three new planetary nebulae Far infrared emission from three new planetary nebulae

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985japa....6..227i&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 6, Dec. 1985, p. 227-231.

Astronomy and Astrophysics

Astronomy

1

Far Infrared Radiation, Infrared Astronomy, Planetary Nebulae, Cosmic Dust, Hydrogen Clouds, Optical Thickness, Point Sources

Scientific paper

As dust emission in the far infrared (FIR) is a characteristic property of planetary nebulae, the Infrared Astronomical Satellite (IRAS) point-source catalogue for confirmatory evidence on the two new possible planetary nebulae S 68 and 248 - 5 identified by Fesen, Gull and Heckathorn (1983) and the high-excitation planetary nebula 76 + 36 detected by Sanduleak (1983). The nebulae 248 - 5 and 76 + 36 were identified with IRAS sources 07404 - 3240 and 17125 + 4919, respectively, and their dust temperature, total FIR emission and optical depth were determined. A lower limit ranging in value from 1.2 x 10 to the -6th to 3.7 x 10 to the -5th for M(dust)/M(solar) of the nebula 248 - 5 depending on whether its grain material is silicate or graphite. S 68 could not be identified with an IRAS source.

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