Misclassified planetary nebulae

Details Misclassified planetary nebulae Misclassified planetary nebulae

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26as...65..301s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 65, no. 2, Aug. 1986, p. 301-307.

Astronomy and Astrophysics

Astrophysics

26

Astronomical Photography, Image Analysis, Infrared Photography, Planetary Nebulae, Astronomical Catalogs, Milky Way Galaxy, Photographic Plates

Scientific paper

The classifications of 130 objects as planetary nebulae (PNs) in the catalogs of Kohoutek (1965, 1969, and 1972) are reexamined by analyzing their images on the IR (755-885-nm) and red (610-690-nm) plates of the NIR photographic survey of the Galactic plane of Hoessel et al. (1985). Factors affecting the IR and red brightness of normal stars and emission-line objects are discussed, and it is shown that PNs should be brighter in the red than in the IR. Thirty-six supposed PNs for which this is not the case are identified, and it is suggested that they have been improperly classified.

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